A pressure control solenoid is an electromechanical device that the transmission control module uses to set the hydraulic fluid pressure inside the transmission. A P1831 diagnostic trouble code means that the voltage coming from the power circuit is low.
What Transmission Do I Have?
How Serious is the Code?
A P1831 DTC is very serious because not only can it prevent the transmission from working properly, a failing pressure control solenoid can cause premature failure of other transmission parts.
Symptoms
Symptoms of a P1831 include:
- Slipping
- Getting stuck in a gear
- Limp mode
- Transmission overheating
- Check engine light
Causes
- Faulty pressure control solenoid
- Damaged wiring
- Clogged hydraulic passages
How to Diagnose the Code?
The first thing the mechanic should look at when diagnosing a P1831 OBDII diagnostic trouble code is the condition of the transmission fluid, as dirty ATF can lead to clogged hydraulic passages. If the transmission fluid is clean and bright, then the DTC data along with voltage and pressure tests, can be used to verify the problem.
What Transmission Do I Have?
What Repairs Will Fix P1831?
- Perform transmission flush/change transmission fluid/filter
- Replace pressure control solenoid
- Repair damaged wiring
Related Codes
P1832 – Pressure Control Solenoid Power Circuit High OBD-II Trouble Code
