OBD Code P0788

Shift/Timing Solenoid High

What’s mean?

OBD2 Code P0788 Definition:
Shift solenoid valve ST is switched ON OFF by a signal from Engine Control Module (ECM) so that let in or out timing of 2nd brake is adjusted by operating orifice control valve. Therefore, shift solenoid valve ST operates when letting in or out reverse clutch.

Symptoms

Possible sumptoms of P0788
– Engine Light ON (or Service Engine Soon Warning Light)

Possible Causes

Possible causes of P0788
– Low transmission fluid level – Dirty transmission fluid – Faulty shifting solenoid valve – Shifting solenoid valve harness or connectors – Shifting solenoid valve circuit is open or shorted The Error code is generally activated on detection of the following conditions: Code P0788 is detected when the Engine Control Module (ECM) ECM detects open in solenoid valve ST circuit 4 times when solenoid valve ST is not operated

Possible Solutions