Lexus DTC P1520 – Stop Lamp Switch Malfunction
DTC P1520 meaning on Lexus
DTC P1520 on a Lexus indicates a malfunction in the stop lamp switch circuit. This code is set when the Engine Control Module (ECM) detects an issue with the stop lamp switch signal.
Lexus DTC P1520 symptoms
- Check Engine Light (CEL) illuminated on the dashboard
- Brake lights not functioning properly
- Cruise control may not work
Lexus DTC P1520 causes
- Faulty stop lamp switch
- Open or short circuit in the stop lamp switch wiring
- Defective Engine Control Module (ECM)
Lexus DTC P1520 seriousness
The DTC P1520 code should not be ignored as it can affect the proper operation of the brake lights and other vehicle systems. It is important to address this issue promptly to ensure safety and proper functionality of the vehicle.
How to diagnose DTC P1520 on Lexus
- Check the stop lamp switch for proper operation
- Inspect the wiring harness for any damage or loose connections
- Use a diagnostic scan tool to retrieve the trouble codes and data from the ECM
How to fix DTC P1520 on Lexus
- Replace the faulty stop lamp switch
- Repair any damaged wiring in the stop lamp switch circuit
- If necessary, replace the Engine Control Module (ECM)
How to erase DTC P1520 on Lexus
- Use a diagnostic scan tool to clear the trouble codes from the ECM
- Ensure the repair has been completed successfully before clearing the code
- Perform a test drive to confirm the issue has been resolved
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