P1520moderate severityPowertrain
Stop Lamp Switch Signal Malfunction
on 2017 Toyota Avalon 3.5L V6 · FWD
What this code means
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 on this vehicle
P0001
Fuel Volume Regulator Control Circuit/Open
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0003
Fuel Volume Regulator Control Circuit Low
P0004
Fuel Volume Regulator Control Circuit High
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1
P0011
Intake Camshaft Position Timing Over-Advanced Bank 1
P0012
Intake Camshaft Position Timing Over-Retarded Bank 1
P0013
Exhaust Camshaft Position Actuator Circuit/Open Bank 1
P0014
Exhaust Camshaft Position Timing Over-Advanced Bank 1
P0015
Exhaust Camshaft Position Timing Over-Retarded Bank 1