P171A
Transmission Fluid Pressure Accumulator Solenoid Valve Control Circuit
P171A is an OBD-II diagnostic trouble code meaning: Transmission Fluid Pressure Accumulator Solenoid Valve Control Circuit. Common causes: pressure accumulator solenoid valve malfunction, open or short circuit in control circuit. Estimated repair cost: $28–167.
Symptoms
- Hard gear shifts
- Slipping when shifting gears
- Transmission of the gearbox into emergency mode
- Check Engine Light Illuminates
- Reduced transmission efficiency
Causes
- Pressure accumulator solenoid valve malfunction
- Open or short circuit in control circuit
- Poor contact in control circuit connectors
- Transmission control module (TCM) malfunction
- Low or contaminated transmission fluid
How to Fix
- Check the level and condition of the transmission fluid
- Diagnose the valve control circuit
- Check the condition of the connectors and wiring harness
- Test or replace solenoid valve
- If necessary, replace the transmission control unit
Related codes
FAQ
What does the P171A code mean?
P171A is an OBD-II diagnostic trouble code that indicates: Transmission Fluid Pressure Accumulator Solenoid Valve Control Circuit
What causes a P171A error code?
The most common causes of P171A include: Pressure accumulator solenoid valve malfunction; Open or short circuit in control circuit; Poor contact in control circuit connectors; Transmission control module (TCM) malfunction.
How do I fix a P171A diagnostic trouble code?
To fix P171A: Check the level and condition of the transmission fluid. Diagnose the valve control circuit. Check the condition of the connectors and wiring harness. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P171A?
Limited driving only, diagnose soon
How much does it cost to fix P171A?
The estimated repair cost for P171A is $28–167. Actual cost depends on your vehicle, location, and labor rates.
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