Possible causes
– Faulty line pressure solenoid valve
– Line pressure solenoid valve harness is open or shorted
– Line pressure solenoid valve circuit poor electrical connection
– Low transmission fluid level
– Dirty transmission fluid
– Line pressure solenoid valve harness is open or shorted
– Line pressure solenoid valve circuit poor electrical connection
– Low transmission fluid level
– Dirty transmission fluid
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
– Transmission shift shock
P0748 KIA Description
The linear 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).