OBD-II Trouble Code Description for P0798 GMC

Pressure Control Solenoid “C” Electrical

What does this mean?

OBD2 Code P0798 GM definition:
The Engine Control Module (ECM) uses signals from the vehicle speed sensor to detect the actual gear position (1st, 2nd, 3rd, 4th or 5th gear). Then the ECM compares the actual gear with the shift schedule in the ECM memory to detect mechanical troubles of the shift solenoid valves and valve body.

Symptoms

Possible sumptoms of OBD code P0798 GM
– Engine Light ON (or Service Engine Soon Warning Light) – Shift shock

Causes

Possible causes of OBD code P0798 GM
– Low transmission fluid level – Dirty transmission fluid – Faulty pressure control solenoid valve – Pressure control solenoid valve harness or connectors – Pressure control solenoid valve circuit is open or shorted The Error code is generally activated on detection of the following conditions: The P0798 GM is triggered when the ECM detects an open or short circuit in shift solenoid valves

Possible Solutions