Symptoms

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

Possible Causes

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

When Detected

The P0745 is detected when TCM detects an improper voltage drop when it tries to operate the solenoid valve.

Tech Notes

When the a transmission solenoid is malfunction, in most cases the problem is not the electrical part of the solenoid; the problem is foreign material obstructing the mechanical function of the solenoid or the flow of the fluid through the transmission valve body. If the transmission fluid is very dirty, it is recommend changing the transmission fluid and if possible removing the transmission pan for further diagnosis. Excessive debris or metal particles on the transmission pan could be an indication that there is a transmission mechanical failure and that the transmission will need to be rebuilt or replaced.

Description

The line 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).

Information For Specific Makes

P0745 ACURA P0745 BMW P0745 FORD P0745 HYUNDAI P0745 INFINITI P0745 JEEP P0745 KIA P0745 MAZDA P0745 MITSUBISHI P0745 NISSAN P0745 SUZUKI