P1135: Definitions depend on the manufacturer — what it means, the affected system and what to check before replacing parts.
Meaning, symptoms, causes and checks
Pedal Position Sensor A Circuit Intermittent. Source catalogue definition; confirm applicability using vehicle service information.
Affected system: Powertrain
Symptoms
- Check engine light illumination
- Erratic or jerky acceleration
- Engine stalling or hesitation
- Poor engine idle quality
- Noticeable loss of power
- Vehicle entering limp home mode
Possible causes
- Damaged or frayed pedal position sensor wiring
- Corroded or loose connector pins
- Faulty accelerator pedal position sensor
- Open or short circuit in the sensor harness
- Intermittent ground connection
- Software glitch in the engine control module
What to check
- Inspect the pedal position sensor connector for signs of corrosion or moisture
- Verify the wiring harness integrity between the pedal sensor and the ECU
- Measure the reference voltage and ground signal at the sensor connector
- Monitor the sensor output signal using a diagnostic scanner for signal dropouts
- Check the continuity of the signal circuit using a digital multimeter
- Clear the diagnostic trouble code and perform a test drive to confirm the fix
Also written as: P1135-00, P113500 (some scan tools add the fault-type byte, e.g. -00).