The P0944 DTC is often used on VW and Chrysler Corp. vehicles when the transmission pump stops producing hydraulic pressure. This is a serious OBD2 code and must be addressed immediately.
How severe is the code?
The P0944 diagnostic code is actually one of the most serious OBDII transmission diagnostic codes you can have. If the transmission loses hydraulic pressure, it will literally not be able to function. When this happens, serious internal damage occurs.
Symptoms
Symptoms of a P0944 include:
- Delayed shifts
- The transmission refuses to shift
Causes
- Dirty or low transmission fluid
- Blocked or loose transmission cooler lines/filter
- Faulty transmission pump
- Internal hydraulic passage blockage
- Stuck transmission pressure regulator valve
How to diagnose the code?
The best way to diagnose a P0944 OBDII trouble code is to perform a transmission line pressure test. This will tell the technician whether or not the transmission pump is creating sufficient hydraulic pressure.
What repairs will fix P0944?
- Change the transmission fluid
- Flush the transmission
- Replace the cooler line filter
- Replace the transmission pump
- Replace the transmission regulator valve
- Replace, rebuild, or install a remanufactured transmission