Symptoms

- Engine Light ON (or Service Engine Soon Warning Light) - Transmission shift shock

Possible Causes

- Faulty secondary pressure solenoid valve - Secondary pressure solenoid valve harness or connectors - Secondary pressure solenoid valve circuit is open or shorted - Low transmission fluid level - Dirty transmission fluid

When Detected

Engine Control Module (ECM) detectes an open or shorted condition on the solenoid circuit

Description

The secondary pressure solenoid valve regulates the oil pump discharge pressure to suit the driving condition in response to a signal sent from the Transmission Control Module (TCM).