The P0942 DTC is commonly found in vehicles manufactured by Chrysler Corporation or Volkswagen. However, a few other car manufacturers are known to use it. What this OBDII fault code means is that there is a significant issue with the transmission pump that creates the hydraulic pressure needed to operate the transmission, and ultimately the drive wheels.
How severe is the code?
The P0942 diagnostic code is actually quite serious, as the transmission must have the correct hydraulic pressure to function properly. If it doesn’t, you could be facing a massive repair bill.
Symptoms
Symptoms of a P0942 include:
- Delayed shifts
- The transmission refuses to shift
Causes
- Low or dirty transmission fluid
- Blocked or loose transmission cooler lines/filter
- Faulty transmission pump
- Fluid blockage inside the transmission body/valve
- The transmission pressure regulator valve is stuck
How to diagnose the code?
Diagnosing a P0942 OBDII fault code typically involves performing a transmission line pressure test to see if the transmission pump is working correctly. Transmission leaks will need to be fixed, and the condition of the transmission fluid should be checked for signs of internal damage.
What repairs will fix P0942?
- Change the transmission fluid
- Flush the transmission
- Replace the cooling line filter
- Replace the transmission pump
- Replace the transmission regulator valve
- Replace, rebuild, or install a remanufactured transmission