Possible causes
– Low transmission fluid level
– Dirty transmission fluid
– Faulty Pressure Control Solenoid
– Pressure Control Solenoid harness is open or shorted
– Pressure Control Solenoid circuit poor electrical connection
– Dirty transmission fluid
– Faulty Pressure Control Solenoid
– Pressure Control Solenoid harness is open or shorted
– Pressure Control Solenoid circuit poor electrical connection
When is the obd code mean?
When the Powertrain Control Module (PCM) detects a continuous open or short in the Pressure Control (PC) solenoid valve circuit the P0748 code is set.
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
– Transmission shift shock
– Transmission shift shock
P0748 CHEVROLET OBD Code Description