3 codes at one time

Question

its a 2005 chevy trailblazer 4.2. it has p2135,p2138 and po641 all at the same time. what could be the possible cause

Answer 1

Hi there,

P2135 indicates an issue with the electric throttle control actuator. Here is some info for you.

P2135 CHEVROLET - Throttle/Pedal Position Sensor/Switch 'A'/'B' Voltage Correlation

Read more: https://www.autocodes.com/p2135_chevrolet.html

P2138 indicates an issue with the accelerator pedal position sensor. Here is some info for you.

P2138 CHEVROLET - Accelerator Pedal Position Sensor 1-2 Correlation

Read more: https://www.autocodes.com/p2138_chevrolet.html

P0641 indicates an issue with the ECM. Here is some info for you.

P0641 CHEVROLET - 5 Volt Reference Voltage Incorrect

Read more: https://www.autocodes.com/p0641_chevrolet.html