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P1121 – Toyota DTC

Toyota DTC P1121 – Accelerator Pedal Position Sensor Range/Performance Problem

DTC P1121 meaning on Toyota

DTC P1121 on Toyota refers to an Accelerator Pedal Position Sensor Range/Performance Problem. This diagnostic trouble code indicates an issue with the accelerator pedal position sensor’s range or performance.

Toyota DTC P1121 symptoms

  • Reduced engine power
  • Acceleration hesitation
  • Check Engine Light illuminated
  • Poor throttle response

Toyota DTC P1121 causes

  • Defective accelerator pedal position sensor
  • Wiring or connector issues in the sensor circuit
  • Electronic control module (ECM) malfunction

Toyota DTC P1121 seriousness

The DTC P1121 code should be addressed promptly as it can lead to drivability issues and potentially unsafe driving conditions. Ignoring this code may result in further damage to engine components.

How to diagnose DTC P1121 on Toyota

  1. Use a diagnostic scanner to retrieve the trouble codes
  2. Inspect the accelerator pedal position sensor and its wiring for any visible damage
  3. Test the sensor’s voltage output using a multimeter
  4. Check for any loose connections or corrosion in the sensor circuit

How to fix DTC P1121 on Toyota

  1. Replace the accelerator pedal position sensor if faulty
  2. Repair or replace any damaged wiring or connectors in the sensor circuit
  3. If the ECM is suspected to be the issue, have it tested and replaced if necessary

How to erase DTC P1121 on Toyota

  1. After fixing the underlying issue, use a diagnostic scanner to clear the trouble codes
  2. Ensure that the repair has resolved the problem before clearing the codes

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← All Toyota Diagnostic Trouble Codes

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