Possible causes

– Dirty transmission fluid
– Low transmission fluid level
– Faulty governor pressure solenoid valve
– Governor pressure solenoid valve harness or connectors
– Governor pressure solenoid valve circuit is open or shorted

When is the code detected?

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

Symptoms

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

P0748 CHRYSLER Description

The governor 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).