DTC 26, Accelerator Pedal Position (App) No. 2 Circuit Low: Notes

Accelerator Pedal Position (APP) module provides a voltage signal that changes relative to accelerator position. There are 3 sensors located within APP module that are scaled differently. DTC 26 will set when voltage is less than .25 volt for 2 seconds on APP No. 2 sensor. PCM will default to input from APP No. 2 sensor being ignored. A current and history DTC will set but will not turn on SERVICE THROTTLE SOON light. Throttle will operate normally as long as there is only one sensor malfunctioning.

If 2 different APP sensors have a malfunction, SERVICE THROTTLE SOON light will light and PCM will limit power. If 3 APP sensors malfunction, SERVICE THROTTLE SOON light will light and PCM will only allow engine to operate at idle.

1. This step determines if DTC 26 is result of a hard failure or an intermittent condition.
2. This step checks PCM and wiring.
3. This step checks PCM and sensor signal circuit.