Possible causes
– Faulty Accelerator Pedal Position Sensor
– Accelerator Pedal Position Sensor harness is open or shorted
– Accelerator Pedal Position Sensor circuit poor electrical connection
– Faulty Electric Throttle Control Actuator
– Accelerator Pedal Position Sensor harness is open or shorted
– Accelerator Pedal Position Sensor circuit poor electrical connection
– Faulty Electric Throttle Control Actuator
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
– No Accelerator Pedal respsonse
– No Accelerator Pedal respsonse
P2138 ACURA Description
When the accelerator pedal is pressed, the Engine Control Module (ECM) opens the throttle valve depending on the Accelerator Pedal Position (APP) sensor signal. As the accelerator pedal position changes, the sensor varies the signal voltage to the ECM.