The P2134 code indicates that the engine control module has detected an intermittent signal from the throttle pedal position sensor circuit. This typically means the voltage signal from the accelerator pedal is dropping out or spiking unexpectedly during operation.
Internal wear or failure of the potentiometer tracks within the pedal assembly.
Corroded, loose, or backed-out pins at the pedal sensor connector.
Frayed, rubbed, or shorted wires between the pedal assembly and the PCM.
Dust, debris, or moisture infiltrating the pedal sensor housing.
Internal circuit failure within the engine control module, though this is rare.
Most accelerator pedal sensors are sealed units; attempting to open or clean them usually results in permanent damage.
No. It is very uncommon for the PCM to cause a P2134. Most cases are solved by replacing the pedal assembly or repairing the wiring.
It is not recommended, as the vehicle may suddenly enter limp mode or experience inconsistent acceleration, which can be dangerous in traffic.