SergT

I recently purchased a 2010 Infiniti G37xs it is having problems and going into limp mode, I scanned it with a scanner and is giving me many codes P0011 (Intake Valve Timing Control) P0340 (camshaft sensor circuit failure) P0123 (throttle position sensor circuit failure) P0223 (accelerator sensor failure) P2101(Air flap position regulator, Electric throttle control, throttle actuator control U0101(lost communication with sub electric oil pump inverter, Lost communication with TCM). The owner before me had already changed both VVT solenoids and also both camshaft position sensors and it also had the rear and front timing chain cover and oil pump gaskets replaced at the Infiniti dealer you can see all the parts are new and there is a service record at the Infinti dealer.When I got the car I drove it for a short period the SES light had come on, the car was driving fine but when you turn off the car after driving it the car will crank but not start unless you unplug the camshaft sensor. I unplugged the camshaft sensor and the car would go into limp mode but it would start and the engine seems to be running smoothly. Not sure what the problem can be since all these parts were serviced recently. Has anybody had the same problem?

SkyG37

From a quick forum search of the first listed code, you might have a blown rear timing gasket, or something all of us G owners fear.

https://www.myg37.com/forums/d-i-y-installations-modifications/267232-rear-timing-cover-gaskets.htm

Try and searching the forum until another educated G owner can chime in with some advice. But for the first one, it might be a rear timing gasket

qmantran

He just said.

Based on the codes listed I would guess your problem is some type of electrical issue based on lost communication codes + circuit/sensor failure codes. My guess would be a ECU failure of some sort. Or maybe a fuse that powers those circuits is blown. Check all fuses which means you'll have to remove the battery to gain access to the other fuse box underneath it.

I would take the vehicle to the dealership if all fuses check out OK

SkyG37

Oops. My fault didnt catch that.

SergT

All the fuses are ok I had already checked them. I am taking the car in next week, are ECU failures common for G37s?

qmantran

I wouldn't say it's a ecu failure just yet. I'm only assuming it has something to do with a driver that controls those circuits. It may not even be ecu related, but instead a shorted wire that shares those same circuits.

qmantran

Any updates?

MStrike

Updates?