Engine and gearbox (P)
P2135: Throttle position sensor correlation
This code indicates a disagreement between the readings of the two throttle position sensors. The sensors should provide matching data to ensure proper throttle operation.
Checked by a licensed car technician · last reviewed 29 September 2026
Symptoms
- Engine hesitation
- Reduced power
- Check engine light on
- Poor acceleration
Common causes
- Throttle body fault
- Connector issue
- Harness damage
How to check it yourself
- Check for loose or corroded connectors at the throttle body
- Inspect wiring harness for damage
- Test the throttle position sensors for consistency
Can I keep driving?
The car can be driven, but with caution as performance may be reduced.
General guidance, not a professional inspection. Confirm faults with measurements before buying parts, and use a qualified mechanic for brakes, steering, fuel leaks, airbags, and other safety-critical work. Terms and disclaimer