Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
DTC 25, Accelerator Pedal Position (App) No. 2 Circuit High: 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 25 will set when voltage is greater than 4.75 volts 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.
- This step determines if DTC 25 is result of a hard failure or an intermittent condition.
- This step checks for an open in ground circuit.
- This step checks PCM and wiring.
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.