Advanced Diagnostics

DTC P0796: CVT Start Clutch Pressure Control Valve Stuck OFF







General Description
The CVT start clutch pressure control valve controls and optimizes clutch pressure (hydraulic pressure) for various driving conditions.

If the vehicle will not move when opening the throttle to accelerate, and the engine rpm and the start clutch target oil pressure increase for a specified time, a malfunction is detected and a DTC is stored.




Monitor Execution, Sequence, Duration, DTC Type, OBD Status




Enable Conditions

Malfunction Threshold
The engine speed is greater than the engine speed in graph 2, the oil pressure of the start clutch is at the specified value or more for at least 2 seconds.

Driving Pattern
1. Start the engine.
2. Shift to the D position.
3. Keep the brake pedal pressed.
4. Hold the engine speed at about 4,000 rpm.

- Drive the vehicle in this manner only if the traffic regulations and ambient conditions allow.

Diagnosis Details

Conditions for illuminating the MIL
When a malfunction is detected during the first drive cycle, a Temporary DTC is stored in the PCM memory. If the malfunction recurs during the next (second) drive cycle, the MIL comes on and the DTC and the freeze frame data are stored.

Conditions for clearing the MIL
The MIL will be cleared if the malfunction does not recur during three consecutive trips in which the diagnostic runs.

The MIL, the DTC, the Temporary DTC, and the freeze frame data can be cleared by using the scan tool Clear command or by disconnecting the battery.