P171C
Transmission Fluid Pressure Accumulator Solenoid Valve Control Circuit High Voltage
P171C is an OBD-II diagnostic trouble code meaning: Transmission Fluid Pressure Accumulator Solenoid Valve Control Circuit High Voltage. Common causes: pressure accumulator solenoid malfunction, open or short circuit in control circuit. Estimated repair cost: $28–89.
Symptoms
- Rough gear shifting
- Dips when switching
- Check Engine Light Illuminates
- Transmission transition to emergency mode
- Increased speed when switching
Causes
- Pressure accumulator solenoid malfunction
- Open or short circuit in control circuit
- Wiring Harness Problems
- Transmission control unit malfunction
- Corrosion of contacts or connectors
How to Fix
- Check the condition of the pressure accumulator solenoid
- Carry out diagnostics of the control circuit (resistance, integrity)
- Inspect the wiring harness for damage
- Check connectors and contacts for corrosion
- If necessary, replace the solenoid or repair the wiring.
Related codes
FAQ
What does the P171C code mean?
P171C is an OBD-II diagnostic trouble code that indicates: Transmission Fluid Pressure Accumulator Solenoid Valve Control Circuit High Voltage
What causes a P171C error code?
The most common causes of P171C include: Pressure accumulator solenoid malfunction; Open or short circuit in control circuit; Wiring Harness Problems; Transmission control unit malfunction.
How do I fix a P171C diagnostic trouble code?
To fix P171C: Check the condition of the pressure accumulator solenoid. Carry out diagnostics of the control circuit (resistance, integrity). Inspect the wiring harness for damage. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P171C?
Limited driving only, diagnose soon
How much does it cost to fix P171C?
The estimated repair cost for P171C is $28–89. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat