C1261 CADILLAC, GMC, CHEVROLET, BUICK: LEFT FRONT INLET VALVE SOLENOID MALFUNCTION
POST UPDATED IN May, 2023
C1261 CADILLAC, GMC, CHEVROLET, BUICK: LEFT FRONT INLET VALVE SOLENOID MALFUNCTION
The system relay is energized when the ignition switch is turned ON. This relay has the function of providing voltages to the valve solenoids as well as the pump motor. From the EBCM (Electronic Brake Control Module) a microprocessor is responsible for energizing the solenoids when grounded in its control circuit.
The storage of DTC C1261 OBD2 occurs when the EBCM detects that the left front inlet valve solenoid has experienced erratic operation.
C1261 OBDII fault code is set for the following reasons:
The steps to troubleshoot the C1261 OBD2 diagnostic code are: