What P2135 means
The two throttle position signals disagree. The ECU will normally force reduced power mode as a safety response.
Common causes
- Failed throttle position sensor
- Dirty throttle body
- Wiring or connector fault
- Failed throttle actuator
How it is usually fixed
- 1Inspect and clean the throttle body
- 2Check connector pins for spread or corrosion
- 3Replace the throttle body assembly if signals still disagree
Other common codes
- P0011 — Camshaft Position A – Timing Over-Advanced (Bank 1)
- P0030 — HO2S Heater Control Circuit (Bank 1, Sensor 1)
- P0101 — Mass Air Flow Circuit Range/Performance
- P0113 — Intake Air Temperature Sensor Circuit High
- P0118 — Engine Coolant Temperature Sensor Circuit High
- P0131 — O2 Sensor Circuit Low Voltage (Bank 1, Sensor 1)
Code information is general guidance, not a diagnosis for a specific vehicle. Confirm with live data and manufacturer test procedures before replacing parts.