Question about Cars & Trucks
Engine light comes on reduced engine power reads code P2122 what does this mean
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Posted on Jan 02, 2017
The codes your vehicle is storing are for low voltage from your accelerator pedal position sensor and a gross evaporative emission leak. The code P2122 and P2138 are directing you to test the accelerator pedal position circuit and/ or sensor. This is the cause of the reduced power concern you are feeling.The P0455 is telling you there is a large leak in the evaporative emission system. The most common cause for this code is a loose or incorrectly installed gas cap.I hope this helps clarify the concerns you are experiencing. If you'd like more information on how to trouble shoot the problems,drop me a line. Please include the model Impala you have,(LS,LT or LTZ) and the engine size. I will do my best to get back to you as soon as possible.Thanks, Chuck
Posted on May 03, 2012
its a problem with the pedal and throttle position corilation
Posted on Jul 09, 2012
Testimonial: "Thanks, I replaced the throttle positioning sensor (had to buy a whole new gas pedal as the sensor is in the pedal. Pretty easy fix, two 10 mm bolts and used a small screw driver to release the wiring harness. Replaced in about 10 mins. "
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