P1120 – Lexus DTC

Lexus DTC P1120 – Accelerator Pedal Position Sensor Circuit Malfunction

DTC P1120 meaning on Lexus

The Diagnostic Trouble Code (DTC) P1120 for Lexus indicates a malfunction in the Accelerator Pedal Position Sensor Circuit.

Lexus DTC P1120 symptoms

• Reduced engine power
• Engine hesitation
• Difficulty accelerating
• Check Engine Light illuminated

Lexus DTC P1120 causes

• Defective accelerator pedal position sensor
• Corroded or damaged wiring in the sensor circuit
• Faulty connections in the sensor circuit

Lexus DTC P1120 seriousness

The DTC P1120 should be addressed promptly as it can lead to drivability issues and potential safety concerns if the accelerator pedal position sensor is not functioning correctly.

How to diagnose DTC P1120 on Lexus

1. Use a diagnostic scanner to retrieve the trouble codes stored in the vehicle’s computer.
2. Inspect the wiring and connections related to the accelerator pedal position sensor for any visible damage or corrosion.
3. Test the accelerator pedal position sensor using a multimeter to check for proper voltage and resistance readings.

How to fix DTC P1120 on Lexus

1. Replace the accelerator pedal position sensor if it is found to be faulty.
2. Repair or replace any damaged wiring or connections in the sensor circuit.
3. Clear the trouble codes using a diagnostic scanner after completing the repairs.

How to erase DTC P1120 on Lexus

1. Connect a diagnostic scanner to the vehicle’s OBD-II port.
2. Access the scanner’s menu to clear the trouble codes stored in the vehicle’s computer.
3. Follow the on-screen prompts to erase the DTC P1120 code.