P1768 ACURA, HONDA, ISUZU: A/T CLUTCH PRESSURE CONTROL VALVE SOLENOID CIRCUIT
POST UPDATED IN June, 2023
P1768 ACURA, HONDA, ISUZU: A/T CLUTCH PRESSURE CONTROL VALVE SOLENOID CIRCUIT
The A/T clutch pressure control solenoid valve is used to regulate shifting and lock-up regulation. A spool in the solenoid pushes the valve according to the duty cycle, which is controlled by the Powertrain Control Module (PCM) to pressurize the fluid so that the hydraulic pressure is proportional to the current.
The PCM measures the current flowing through the A/T clutch pressure control solenoid valve and uses the feedback setting to compensate for the difference between the expected and actual current. If the current measured for the PCM output duty cycle is not within a specified range (shorted or open), a fault is detected and the P1768 OBDII diagnostic code is set.
The factors related to the P1768 OBD2 fault code setting are:
To troubleshoot DTC P1768 OBDII code you must do the following: