P2135 Throttle/Pedal Position Sensor/Switch "A"/"B" Voltage Correlation

Powertrain Severity: High Generic OBD-II

The two throttle position signals do not agree with each other.

Common causes

  • Faulty throttle body sensor
  • Corroded connector
  • Wiring damage

Symptoms

  • Limp mode
  • Reduced throttle response
  • Stalling

What to check

  1. Inspect throttle body connector
  2. Compare both signals on a scan tool
  3. Replace throttle body if signals disagree

Manufacturers may add their own detail to generic codes. If your vehicle shows a different description for P2135, follow the service information for that make and model.