Wassup guys, I’ve been having some issues with my g coupe (2012 g37xs). When I drive the idle is high and then I drive a little longer, boom the traction control light comes on (just the tc light). With follows a serious delay in acceleration. The car moves like a old *** Volvo. Like the car has no power when it finally responds to my foot. Any ideas. (P.s I’ve already unplugged the car let it sit. I replaced one speed sensor on the driver side front. Also to add I have a cel for upstream 02sensor)

 

Might need to replace the upstream O2...Hard to tell if we don't know the CEL codes.

 

Yeah it is going to be your O2 sensor. Do you have test pipes? I had high idle issues and it was due to not tightening the bolts on my test pipes fully which caused air to escape. When air escapes through the sides the throttle bodies think that not enough exhaust air is flowing out so it ups your idle to accommodate that.

 

Codes would help. Any mods?

BTW, upstream sensors (pre-cat) are A/F (air/fuel) sensors, NOT​​​​ O² sensors. The O² sensors are downstream (post-cat). There is a difference and they are not interchangeable. I say this just in case you have to order a new sensor you don't want to order the wrong one!

 

these are the codes I’m getting

 

Important: have you made any modifications to the Intakes and/or Exhaust or are you completely stock?

First, if you haven't already, download the EC (Engine Control) Section of the factory manual for your car from here. This will list the codes and how you can go by troubleshooting them. All of your codes are exclusive to Bank 2 (Driver Side) so the logical starting point is to start upstream (intake) first.

P010C is for your MAF (Mass Air Flow) sensor. For that I would remove and clean the sensor (there are spray cleaners for these sensors). Then make sure all of the intake components/ duct connections are tight and the air filter is clean. Any air leaks between the filter and the throttle body can cause issues. Check the harness connector for dirt, water, corrosion, damaged wires, etc.

Also, another forum member with a similar issue and a P010B code, used gasket sealer on the MAF sensor mounting flange. You may want to check this thread out as well.

Assuring everything is clean and tight with the intake, I would suggest you clear all of the codes then drive the car and see if the codes return. Depending on those results, then you can diagnose further.