What it means
The transmission control module detects that pressure control solenoid R is not performing as expected or is stuck off.
At a glance
- Usually lights the check-engine light
- The engine or gearbox may go into limp mode
How it works
Pressure Control Solenoid R regulates transmission hydraulic pressure when commanded by the control module. This code sets when the expected pressure response to Solenoid R is missing, often because its spool is stuck closed or debris restricts its hydraulic feed.
Common causes
Most likely first.
- Solenoid spool stuck in closed position
- Hydraulic feed restricted by debris
- Carbon or debris buildup preventing free movement
Symptoms
- Transmission warning light may illuminate
- Harsh or delayed shifting
- Slipping or unexpected shifts
- Transmission may enter limp mode
How to diagnose it
- Record freeze-frame data and check which gear changes or operating conditions coincide with the Solenoid R pressure fault.
- Check transmission fluid level and condition using the vehicle’s specified procedure, since low or contaminated fluid can affect pressure response.
- Inspect the wiring and connector for Solenoid R for damage, loose fit, corrosion, or fluid contamination.
- Compare commanded Solenoid R operation with available pressure or shift data to confirm the missing response occurs when it is commanded on.
- If electrical operation is present, have the Solenoid R spool and hydraulic feed checked for sticking or blockage using the manufacturer’s service procedure.
Common fixes
- Correct transmission fluid level or condition if it is outside the manufacturer’s specification.
- Repair damaged wiring or clean and secure the Solenoid R connector.
- Remove confirmed debris restricting Solenoid R’s hydraulic feed.
- Repair or replace Pressure Control Solenoid R if its spool is stuck closed.
Can I keep driving?
Avoid hard acceleration and towing; slipping or delayed shifts can worsen transmission damage. If the vehicle slips badly, shifts unpredictably, or loses drive, stop driving and arrange recovery.
A code shows where the control module detected a fault, not always which part failed. Check the causes in order and confirm with a test before replacing parts. Have several codes? Check them together
This is a generic code: it means the same on every make. The car’s maker may add more detail in its own service information.