code p2138

[Bigsaucy71]

Evening folks ,today on my ride home my car loss pwer and proceeded with a CEL with the code p2138..Anyone have any experience with this? It seems to be tps releated...thanks in advance

 

[danenzmann]

I may have a clue, but not a solution. It appears there are internet rumors that the pedal position sensor (PPS) can wear out at 75K miles. The Standard Motor Products (NYSE: SMP) mega corporation distributes APS706, the gas pedal from a Korean OEM Manufacturer for about half the price of the typical dealer. The entire pedal assembly can be replaced for less than $150, using only a pocket screwdriver and a 10mm socket on a 1/4 rachet extension. YouTube videos abound on how to do this. The PPS signal is processed by the ECM and forwarded to the electric throttle body, which feeds back to the ECM. If your P2138 error persists, change the pedal first. If this is not the cure, clean and lube your throttle body butterfly valve system.

 

[sonicmach1]

I’ve gotten that code about 5 times in last two weeks. G70 3.3t. I need to take it in. Just hit 15000 miles 2023.

 

[G70Derf]

I’ve gotten that code about 5 times in last two weeks. G70 3.3t. I need to take it in. Just hit 15000 miles 2023.

You're under warranty, just take it in and have the dealer deal with it.

For whatever reason you want to DIY it, try the free easy stuff first like cleaning the throttle body before throwing parts at it.

 

[danenzmann]

I have read online reports that state that the pedal response products could initiate the CEL 2138, so if you are using a "pedal response" control product, unplug it from the PPS system and put the connector back onto the OEM pedal before you buy an expensive new pedal. After I purchased the shiny new pedals for one of our Gennies, it did not change the pedal response or power curve. I have also installed a 9-drive style of "commander". It was fun and effective, but I removed it because the pedal was too sensitive. Our Gennies have the three switchable performance choices that do a better job than the third-party device I installed.