Catalyst problem p0420 p0420. seen same vehicles being recalled.
Loud whistling/whining sound from the motor at start up. extreme loss of power when starting up a grade or to get up to speed on the interstate causing fear of rear end collision. it appears to be a common issue with this vehicle that results in a timing chain or catalytic converter repair, costing several thousand dollars. it appears infiniti is aware of the problem but won't issue a recall for obvious reasons. this vehicle is now virtually inoperable as it is not safe to be on the road until it is fixed.
Hear abnormal noises from the engine sound like rattle or ticking
The service engine light came on, and i brought the vehicle to thousand oaks infiniti where i regularly have the vehicle serviced. the diagnosis was a bank 2 catalytic convertor failure. based on my research, this is a very common problem with the car and it is just a matter of time that the other catalytic convertor will also need to be replaced.