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DTC code

P2135

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

Technical guide

Symptoms

  • Check engine light
  • limp mode
  • reduced throttle response

Probable causes

  • Throttle/pedal position sensor A/B voltage correlation fault
  • faulty accelerator pedal sensor
  • throttle body sensor mismatch
  • wiring fault

Diagnostic steps

  1. Check accelerator pedal position sensor.
  2. Check throttle body position sensor.
  3. Compare sensor 1 vs sensor 2 readings.
  4. Replace faulty sensor.

Cross-checked technical synthesis (QA). It does not replace the manufacturer's procedure.

Models most reported with this code (NHTSA)

Ford Focus 7

Count of distinct owner complaints mentioning the code. US data — same engines, same failures.

AI here is a librarian: this page shows only what mechanics confirmed, or says “unknown”. It never suggests a diagnosis — MECCANIC interprets the code, never your car.

0 confirmed cases on P2135

Nothing confirmed yet for this code. No guess is offered on purpose.

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