Problems with 2006 Subaru Outback VEHICLE SPEED CONTROL

Slowing at intersection to make a right turn when check-engine-light came on. cruise control light started flashing (vehicle was not in cruise control at the time) accelerator pedal became unresponsive (could get no acceleration out of the car when pressing the pedal) and was barely able to get through intersection to turn. after a minute or so was able to get enough power to run at about 10mph tops with hazards on to get a location where i could pull over out of traffic. car would not start immediately after (three cranks with no response) after a few minutes, though, it restarted and seemed to operate normally, no problems with speed. diagnostic code was p2138 (throttle/pedal position sensor/switch "a"/"b" voltage correlation. *tr

While driving on the highway, the check engine light came on and i immediately had no throttle response. thankfully it was 10:30pm and there was a lower volume of traffic. i coasted off to the shoulder. turned the vehicle off, restarted, and still no throttle response. turned off again for about 15 minutes. this time there was throttle response, but cel was still on. the following day, the cel light was off and vehicle running fine. now, a week later, it happened again. it is a very dangerous situation to all of a sudden have no power while driving. especially when there is traffic around. the fear is being run into from behind, or being stuck on the side of the road and become prey for the unsavory. this situation needs to be remedied before someone dies. *tr

Vehicle suddenly lost power, would not accelerate when accelerator pedal was depressed. when car was turned off and ignition turned, the vehicle was idling at a high rpm. when placed into drive vehicle would move forward at 15 mph, but there was no response from the accelerator pedal. engine light went on, as did the cruise control light. depressing the cruise control on/off button did not change cruise control indicator. took into the dealership and they cleared the code and returned the vehicle back to me. the same thing occurred several days later. when i took it into the dealership, they told me the accelerator pedal assembly was malfunctioning and they charged me $403.88 as a replacement. i see now on the web that others have had this problem. this is a very dangerous fail and could have caused a serious incident. it is also very frustrating because it all occurred within a few days of having $2400 of service already on the vehicle (engine head gaskets replaced, timing belt, trans fluid flush, tire rotate), and i had to take it back to the dealership 3 times in order to get issues dealt with (twice with the accelerator issue, once because they had failed to properly tighten the power steering belt). *tr

While driving down i-25 the car lost all power and had no acceleration. the car would only idle, i noticed a check engine light on. i had the car towed to a repair shop and when the code was read a p2138 that had to do with the accelerator the mechanic said it happens alot with this year subaru. he told me by just shutting the car off and waiting a few minutes it would have driven normal,when he started it again it did drive normal. he sends them to a subaru dealer and tells the people that if enough of us complain or fill in a report then something may be done. this is a very unsafe car if it loses all power driving down the highway! *tr

Driving on the highway, the check engine light came on soon followed by the flashing cruise control light. at the point, the car became no longer responsive to the accelerator. i was forced to pull over because after breaking, i couldn't speed back up. turning the car off and on again did not solve the problem. when i turned the car on the engine revved at a high speed with the cruise control light still flashing. i eventually had to get the car towed. *tr

As i was driving on the freeway, suddenly the check engine light came on, i lost thrust even though the engine was still turning at 2000 rpm, and my car started to slow down. luckily i was already in the right lane, so it was easy to pull off the road. i went to autozone to have them read the code. the code was p2138 which is the pedal position sensor. *tr

Subaru outback/legacy 2006 - intermittent issue over a few months. the check engine light comes on, cruise control flashes and car goes limp, gas pedal stops working. after car goes limp, engine needs to be turned off, but once car is put in park for it to be turned off, the engine revs to approx. 2000 rpms on its own. the car then has to sit for a few minutes to attempt to turn the car on and the gas pedal to work again. this problem has thrown the code p2138. this is a serious safety issue, even more so as it has happened while on the freeway, where the car will lose speed due to the accelerator pedal not working and the car has essentially become a roadblock in the middle of fast oncoming traffic. this could have potentially caused serious accidents. after researching this particular problem online, it appears that many others with this exact car make/year have had the same issue and it is prevalent to this particular car. subaru needs to conduct an investigation and offer a safety recall of this vehicle - at the very least, the cost of repairs to fix this known and prevalent issue with this car needs to be covered by the manufacturer. *tr

Drive-by-wire throttle receives signal error (p2138) and ecu cuts off throttle function. this presents a serious and dangerous condition as the driver is then entirely unable to modulate speed. this error has occurred three times with no warning on the same vehicle, and at various speeds and situations. the latest one occurred on a highway at approximately 60mph where collisions due to disabled throttle were narrowly avoided. this error and the vehicle's ecu response could kill someone. *tr

While driving down the road, lost ability to accelerate, throttle failed to respond. this has happened 4 separate times now. replaced accelerator assembly, but problem still continues without notice. intermittent problem. *tr

I was parked in a shopping mall parking lot. when i started the engine and pulled out of the parking space the gas pedal was unresponsive. i just rolled along with no power. the check engine light came on and i rolled into another parking space. i read in the owner's manual that it could be an emission control problem or something to do with the gas cap. i took the gas cap off and re-seated it and when i tried to start the car again on the third try, the check engine light went off and the car had power again and the gas pedal was responsive. i took it to my mechanic and he found the code to be p3128. i was fortunate that this did not happen while i was on the highway or anywhere in busy traffic. i had the entire throttle/pedal assembly replaced at a cost of aprox. $500 and hope that this solves the problem. *tr

I have experienced this twice in the past 3 months. both time my car goes to limo mode. the check engine light comes on and the cruise control light flashes. the pedal does not rev the engine. after a number of tries, the pedal will become responsive again. after about 3 restarts once the engine is reving the check engine light and cruise will go out and the car will be normal until it does it again. when i read the code, it's p2138 indicating it's an issue with the 2 reducent sensors on the pedal disagreeing about where the pedal is. this is a very serious defect! call soa and asked to take it to the authorized dealership. bought the car at west subaru herr buffalo,live in canada now. *tr

I was driving the vehicle at a steady rate of 50mph. suddenly the cruise control indicator light illuminated and began to flash as well as the check engine indicator light. the vehicle also became unresponsive to the accelerator when pressed or depressed. the vehicle would maintain a speed about 20mph even after coming to a complete stop. after pulling to the side of the road and engaging the hazard lights, i put the car in park. the rpm gauge then skyrockets to 3000-4000 rpm and the engine becomes really loud. i turn the key off and let the car sit for a few minutes. neglecting to sit for a few minutes results in the same behavior. after starting the car again the cruise control indicator light still flashes and the check engine indicator light remains on. after 3 restarts both indicator lights are off and all seems fine. after taking it to the dealership they told me it is a "bad accelerator and it has been replaced recently". the dealership then reset the code. this has happened over 10 times in the last 3 months and continues to happen on a random basis. loss of power and control is unsafe and needs to be addressed. *tr

While driving down the highway i lost the ability to accelerate forward, meaning my gas pedal stopped working and i began to coast. at the moment i lost the ability to accelerate, my check engine light appeared and my cruise control became disabled. luckily, i was able to safely pull to the side of the road. after turning on and off the engine several times, i was then able to accelerate again. i then went to o'reilly's to have a diagnostics performed, which resulted in code p2138 (throttle pedal position sensor d-e voltage rationality). this problem continues to occur without warning. *tr

Sudden loss of accelerator control in traffic. cannot rev engine or maintain speed above 600 rpm/5 mph; barely idling. codes on ecu indicate throttle body positioning sensor failure. eventually had to replace throttle body to resolve problem. *tr

Vehicle lost throttle response suddenly. was able to coast at about 20mph off of an interstate to a safe location code check indicated p2138 throttle position sensor fault. *tr

Same symptom happened twice: once just after starting from a service area on the interstate, the second on suburban roads i describe here. during a normal 30 mile suburban trip, after about 20 miles the vehicle suddenly lost power and the check engine light came on. the engine continued running but the accelerator pedal seemed to have no control over the engine speed or power. after coasting to a stop and turning the engine off for a minute the car started and ran normally, though the check engine light stayed on for a day or so. when we took the vehicle to the dealer after the first incident they were not able to interpret the check engine codes; after the second incident they found a p2138 code -- "accelerator position sensor" failure. they replaced the accelerator assembly and the vehicle seems to be running correctly again. as i understand it the issue is a failure in the accelerator position sensor: there are dual sensors in the assembly and if their readings differ the accelerator pedal is effectively "disconnected" and the driver loses all power. i believe this is a serious safety issue: the failure could just as well have taken place at high speed on the interstate without the possibility of a safe stop, and having the first indication of trouble being "losing all power" is not acceptable. *tr

Happened twice in one week. all of sudden, accelerator not responsive and lost of power. check engine light comes on and cruise flashing. after turning on and off or stay off for a night, lights went out themselves. error code p2138 accelerator position sensor. check sensor no obvious loose on connector. press connect on and no issue so far. it seems the connector too close to the floor and easy to kicked or touched by foot. \ car was bought in buffalo west herr subaru and used in toronto. *tr

While driving 70mph in the fast lane down the highway i turned cruise control on. as soon as the cruise control was engaged all throttle was lost. while in motion i put the car in neutral then back into drive and nothing happened. the car was decelerating so i pulled off the highway. once safely on the side of the road i turned the car off for several minutes and then back on. the acceleration capability returned but the check engine light was on. i took the car to a mechanic to read the code which came back as the throttle control sensor. this is a very dangerous defect and should be addressed by subaru america. *tr

I was accelerating to get on the freeway entrance in my subaru outback (with my wife and two small children) when i notice a complete loss in throttle response. the car was just barely moving due to the engine idle. check engine light came on. i drove at that pace to a parking lot to check my options. i had not noted, until now, that this car has no throttle cable and is completely drive-by-wire. i looked at the connection of wire harness to the pedal assembly and did not see any red flags - no corrosion, etc. it appeared to be in good shape. i shut the car off, waited about 30 sec, and restarted it. it then got us home. when i got home tonight, i ran my obd diagnostic tool and got a p2138 error code. this is listed as "throttle/pedal position sensor/switch "d"/"e" voltage correlation" trouble code description. i am going to check into my options tomorrow, but felt this was worth reporting since it appears there are others out there that have experienced this problem as well. there is definitely a safety concern with a failure of this nature as i was traveling at a good rate and in traffic. luckily, everyone is ok - but my wife and i worry when this will happen again. thanks. *tr

Tl* the contact owns a 2006 subaru outback. the contact stated that while driving 65 mph, the accelerator failed to respond to acceleration attempts. the contact also mentioned that the check engine warning light and the cruise control light illuminated intermittently. the vehicle also erroneously decelerated while the accelerator pedal was being depressed. the vehicle was taken to the dealer where the technician stated that the accelerator pedal would need to be replaced. the vehicle was not repaired. the manufacturer was not notified. the failure mileage was 94,000. updated 12/30/13*cn

Tl* the contact owns a 2006 subaru outback. the contact was driving 60 mph when the engine light illuminated and he had no accelerator control. the vehicle was taken to the dealer for inspection and repair. the dealer replaced the accelerator pedal assembly. the manufacturer was not notified of the incident. the approximate failure mileage was 45,000. updated 11/15/13*cn the dealer replaced the accelerator assembly.

In the 2006 subaru outback 3.0 the throttle is controlled electronically. this failed on me while driving at 70 mph down the freeway. the gas peddle stopped responding. i could not accelerate or maintain speed. i had to pull over. after about 1 minute i restarted the car and the throttle started to respond again. my check engine light is now on and the cruise control light is blinking. this is a safety hazard and needs a fix. after reviewing many forums, it doesn't sound like subaru knows what is causing the issue. but there are some "recommendations". *tr

While driving at 65 mph, car began to "buck" and lost power. cruise control light began to flash and check engine light was steady. happened exactly the same again today, 6/3/2014. problem was coded as p2138 and accelerator assembly was replaced one year ago. car will need to go in to mechanic again today. expect similar problem. *tr

Incident initially started in february, went to accelerate after starting car in the am, did not respond, cel and flashing cruise button came on, engine seemed to idle and wouldn't respond to trying to accelerate again. turned engine off, tried to turn back on, would not start. repeated process with starting 2-3 times until started again. cel and flashing cruise remained on for a couple days, took to repair garage and they said that they couldn't find anything wrong on the diagnostic run. this has continued to occur off and on for the last several months. i have taken it to 2 different shops who could never find anything wrong with the car or get it to reproduce when they drove it, and then to dealer 2 weeks ago, they replaced throttle body and did a fuel injector service. again, this morning, accelerating at 30-40 mph in start/stop traffic, could not accelerate at 30 mph, engine started to rev, pulled over to side, shut off engine, repeated 2 more times, again cel and flashing cruise. these lights are still on but car drove normally. very frustrated as i cannot get it to reproduce for shop or for dealership because it happens so erratically. *tr

I was driving at 60 mph when the accelerator pedal stopped responding. i couldn't accelerate or maintain speed. had to coast to the shoulder thru traffic. the check engine light was now on and the cruise control light was flashing. the idle was at 2,000 rpms and the accelerator pedal was still not responding. i turned off the engine for about 2 minutes. when i turned it back on, the accelerator was working but the check engine light was still on and the cruise control light was flashing. read obd code p2138, reset code and check engine light went out. this is a very dangerous condition and should be recalled by subaru. *tr

There have been two incidents so far. one was traveling on the freeway at 65mph when the throttle completely stopped responding. the other incident occurred at much lower speeds when turning a corner and the throttle no longer responded. in both cases the car would not accelerate or maintain speed. pressing on the accelerator did not have any effect at all. in both cases the car would "coast" along at whatever speed the engine idling would move it - roughly 15 mph. *tr

2006 subaru outback. consumer writes in regards to an accident that was cause by vehicle sudden acceleration . *smd the consumer stated she was backing out of a parking space, with her foot on the brake, when suddenly there was a jerking feeling and the vehicle accelerated, with the engine revving. when she applied the brake more firmly, the vehicle went even faster, and consequently, she hit another vehicle, which was then pushed into another vehicle. earlier in the month, the consumer and her husband noticed the vehicle would jerk occasionally and the shifting was erratic.

2006 subaru outback. consumer writes in regards to vehicle sudden acceleration. *smd the consumer stated on the morning of november 26, 2012, whole pulling out of a parking space in a public garage, the vehicle became uncontrollable and smashed into a concrete garage post and then the garage wall. there was significant damage to the car and to areas in the garage. the consumer stated as she started to leave the parking space, the vehicle accelerated backwards and hit a post. not knowing what caused the problem, she put the vehicle in drive in order to move away from the post. the vehicle instantly accelerated, and her efforts to control it through applying the brake and steering were unsuccessful. the consumer sold the vehicle to the body repair shop for $500 after no longer feeling comfortable driving the vehicle. *jb

I was driving when the accelerator pedal stopped responding. i couldn't accelerate or maintain speed. the check engine light was now on and the cruise control light was flashing. i pulled over and the idle was at 2,000 rpms and the accelerator pedal was still not responding. i turned off the engine for about 5 minutes. when i turned it back on, the accelerator was working but the check engine light was on and the cruise control light was flashing. *tr

My wife was driving the vehicle when the check engine light came on. the cruise light started flashing. the gas pedal was non functioning. she was able to cost to a safe place. when i arrived the car was running. the gas pedal was unresponsive. i shut the car off and took her to work. an hour later i returned to the car and tried to start it. it took several seconds to start, but did. the gas pedal worked. the check engine light was on steady and the cruise control was flashing. i was able to get the car home. today 10/20/12 the car has no symptoms. this could have been very scary as my wife was driving on the busiest street in montana during the morning commute. *tr

First incident 4/8/12 - after down shifting and beginning to coast downhill at about 25 mph, the engine began revving as if the accelerator was being pressed and depressed slowly, the car did not respond to the accelerator, the check engine light turned on, and the cruise control light began to blink slowly. the car continued to move very slowly so were able to pull over. turned the engine off for a few seconds and after restarting, the car was responsive but both lights were still on. the dealer diagnosed a lose gas cap. second incident 4/18/12 - driving in heavy traffic on a highway at about 20 mph, same problem. turned the engine off while still in traffic and restarted immediately but the problem persisted. tried to do so several times while in traffic but the problem continued. was able to get over to the shoulder, turned the engine off, for about 30 seconds. after restarting, the car was responsive again but both lights were still on. the dealer suggested a faulty throttle sensor but could not confirm until the car was checked. the problem code was given as p2138. the car has a manual transmission. *tr

Engine lost power and had to pull to side of road. retrieved error code p2138 (accelerator pedal position sensor) from (dlc) data link connector in car. *tr

First occurrence 12/5/11. i was driving through a parking lot and check engine light came on as i lost the ability accelerate. i coasted to a parking space, shut my car off and was waiting for a tow truck. after and hour i turned my car back on and all seemed fine. i took it straight to the dealership where they found problem p2138, accelerator pedal assembly problem. they replaced the accelerator pedal. all seemed to be working fine. second occurrence 1/21/12. i was driving along a side road, check engine light came on as i once again lost the ability to accelerate. shut the car off, sat for a few minutes and turned it back on. i was able to drive but the check engine light was still on. i got my car home and hooked up the diagnostic computer to it and got the same p2138 code. i readjusted the wires connecting the accelerator and check engine light went off. my concern is that this problem is going to occur when i am driving on the highway. obviously the replacement of the accelerator pedal is not the solution to this problem. *tr

I was driving at 55 mph in my 2006 subaru outback. when i brake for slowing traffic, the check engine light came on and the cruise control light started to blink. the accelerator pedal became unresponsive and it appeared that the car's engine went into idle mode. i was losing speed and pulled to the shoulder of the road. i shut off my engine and a few minutes later i was able to restart the car. the accelerator pedal seemed to function normally, although the two warning lights were still illuminated. the next day i started the car a couple of times, the accelerator pedal functioned normally and both warning lights were no longer lit. my code reader found an error code of p2138, (unrecognized code), the car operated normally until 12/18/2012. this identical problem recurred and i again read the error code as p2138. this is a potential safety issue. although both times the accelerator pedal became unresponsive, i was on a road with very few cars and had no difficulty getting safely to the side of the road. the situation could have been more dangerous if i was at freeway speed with traffic around me. *tr

I was driving at night at 55 mph in my 2006 subaru outback. the check engine light came on and the cruise control light started to blink. the accelerator pedal became unresponsive and it appeared that the car's engine went into idle mode. i was losing speed and decided to move my car to the shoulder of the road. i shut off my engine and waited a minute or two and tried to restart the car without success. a few minutes later i was able to restart the car and the accelerator pedal seemed to function normally, although the two warning lights were still illuminated. the next day i started the car a couple of times, the accelerator pedal functioned normally and both warning lights were no longer lit. the car operated normally for about one week. this indentical problem recurred again one week after the first incident. i drove my 2006 outback to my independent subaru mechanic who read the error code as p2138. he has seen several of his client's cars with this problem recently and recommended that i take my car to a subaru dealer for inspection and repair. a few days later i had my outback serviced at my local subaru dealer. they diagnosed the problem as a faulty accelerator pedal sensor (integral to the pedal assembly) and confirmed the p2138 error code. the pedal sensor was replaced and (two days later) the car appears to be functioning normally again. the repair bill was about $320 for the parts and labor. i do believe this is a potential safety issue. although both times the accelerator pedal became unresponsive i was on a road with very few cars and had no difficulty getting safely to the side of the road. the situation could have been more dangerous if i was trying to change lanes at high speed with lots of traffic around me. *kb

Incident happened at a red light in traffic at rush hour. after pulling up to a red light to a full stop, the light turned green and the throttle stuck open at exactly 2500rpm. the car accelerated from a dead stop and continued to do so with no input from me. the gas pedal does nothing at all. i had to apply brakes and move off the road to avoid traffic. check engine light is solid and the cruise control light flashes. *tr

Tl* the contact owns a 2006 subaru outback. the contact was traveling 55 mph when the vehicle decelerated despite the accelerator pedal being depressed. the contact mentioned that the check engine and cruise control warning lights illuminated. the vehicle was taken to the dealer twice. also, the vehicle was taken to a private mechanic who confirmed that the accelerator pedal and sensor needed to be replaced. the manufacturer was not made aware of the failure. the vehicle was not repaired. the failure mileage was 45,052 and the current mileage was 45,078.

Tl* the contact owns a 2006 subaru outback. the contact was driving 55 mph and attempting to accelerate but the vehicle would not respond. the check engine light illuminated as the engine was turned off momentarily and the failure would reset itself until recurring with the illumination of the check engine light. the vehicle was previously taken to the dealer in which a diagnostic test was performed and it was determined that the accelerator had failed. the accelerator pedal was replaced yet the failure recurred. a second diagnostic was performed which also indicated a failure within the accelerator pedal. the dealer was unable to determine the cause of the failure and the vehicle was not repaired. the manufacturer was contacted and informed the contact to take the vehicle back to the dealer and offered no further assistance. the vehicle was not repaired further. updated 02/23/11 *bf updated 04/28/11

Tl* the contact owns a 2006 subaru outback. the contact stated that while driving 20 mph, the vehicle suddenly decelerated. the contact also stated that the check engine lamp and cruise control warning lamp illuminated on the instrument panel. the vehicle was taken to a local mechanic, who diagnosed that a sensor on the accelerator pedal needed to be replaced. the manufacturer was not made aware of the failure. the vehicle was not repaired. the failure mileage was 30,000 and current mileage was 58,000.

2006 subaru outback. hi, problem (1) head rest is so big that between the seat belt strap and the head rest there is no view to see vehicles about to pass in the left hand lane. can result in side swiping when changing lanes. all the safety features in the world won't help if the end result of the feature is to cause injury or fatality. safety problem (2) the speedometer. in order to make the instrument panel look "cute" you have destroy the ability to see what speed the vehicle is moving. no need to go to 140 mph to start with. the jumps between markings make it just about impossible to quickly determine the speeds 50, 60, and 70 mph and forget trying for 55,65,75. what do you intend to do about these two very serious safety problems on my 2006 subaru outback?????? i am "dead" serious about this and will search all possibilities for a remedy.*ak