Engine Code P2138

JEFFRUSH2004

MEMBER
2008 CADILLAC SRX
V8
AWD
AUTOMATIC
141,000 MILES

Hello, I reset the check engine light, first its very humid here those days, I got a engine power reduce, I ask to onstar for a diagnose they told me the code p2138 throttle position. 2 weeks ago they clean my throttle body, is it a connector I need to clean, if yes where I can find it?

1 Reply

KASEKENNY

MECHANIC
18,907 POSTS

It is unlikely because this code is actually for the accelerator pedal position sensor which is on the pedal and not on the throttle body. So it would not be effected by the cleaning of the throttle body.

I attached the testing that you will need to run through in order to figure out what is needed.

Let's run through this testing and see what we find.

Here is a guide that will help with the testing:

https://www.2carpros.com/articles/how-to-check-wiring

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