DTC Detection Logic

WARNING: This page is about a different car, the 2020 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.

DTC

(On board display)

Trouble diagnosis name

DTC detecting condition

Possible causes

C1A13

(13)

STOP LAMP RLY FIX

Stop lamp inactive state continues for 0.3 seconds or more despite the outputting of a distance sensor (ICC sensor) ICC brake hold relay drive signal
The stop lamp remains ON for 60 seconds or more under the following conditions:
- Driving at 40 km/h or more
- No stop lamp drive signal output from distance sensor (ICC sensor)
- No brake operation

Stop lamp switch circuit
Brake pedal position switch circuit
ICC brake hold relay circuit
Stop lamp switch
Brake pedal position switch
ICC brake hold relay
Incorrect stop lamp switch installation
Incorrect brake pedal position switch installation
ECM
ABS actuator and electric unit (control unit)

NOTE: If DTC "C1A13" is detected along with DTC "U1000", first diagnose the DTC "U1000". Refer to DTC Description .