P1520
Stop Lamp Switch Signal Malfunction
2001-2005 Lexus GS 430 4.3L V8
Moderate SeverityPowertrain
Description
The ECM detected a fault in the brake light switch signal circuit.
Symptoms
- CEL
- Cruise control inop
- Brake lights stuck
- Shift interlock issue
Common Causes
- Faulty stop lamp switch
- Misadjusted switch
- Damaged wiring
- Poor connection
Diagnostic Steps
- Test switch operation
- Adjust switch position
- Inspect wiring
- Check voltage
Repair Notes
Replace or adjust stop lamp switch.
Other Powertrain Codes
- P0001Fuel Volume Regulator Control Circuit/Open
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0003Fuel Volume Regulator Control Circuit Low
- P0004Fuel Volume Regulator Control Circuit High
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
- P0011Intake Camshaft Position Timing Over-Advanced Bank 1
- P0012Intake Camshaft Position Timing Over-Retarded Bank 1
- P0013Exhaust Camshaft Position Actuator Circuit/Open Bank 1
- P0014Exhaust Camshaft Position Timing Over-Advanced Bank 1
- P0015Exhaust Camshaft Position Timing Over-Retarded Bank 1
P1520 on Other Vehicles
Common Questions
What does code P1520 mean on a 2001-2005 Lexus GS 430?
P1520 stands for "Stop Lamp Switch Signal Malfunction". The ECM detected a fault in the brake light switch signal circuit.
What are the symptoms of P1520 on a Lexus GS 430?
Common symptoms of P1520 include: CEL, Cruise control inop, Brake lights stuck, Shift interlock issue.
What causes P1520 on a 2001-2005 Lexus GS 430?
Common causes of P1520 include: Faulty stop lamp switch, Misadjusted switch, Damaged wiring, Poor connection.