P171D
Transmission Fluid Pressure Accumulator System Performance
P171D is an OBD-II diagnostic trouble code meaning: Transmission Fluid Pressure Accumulator System Performance. Common causes: low or contaminated transmission fluid, pressure accumulator valve fault. Estimated repair cost: $17–89.
Symptoms
- Hard or delayed gear shifts
- Gear slipping during acceleration
- Increased engine speed when switching
- Transmission fluid overheating
- Check Engine light comes on
Causes
- Low or contaminated transmission fluid
- Pressure accumulator valve fault
- Leaks in the hydraulic system
- Clogged channels or transmission fluid filter
- Pressure sensor malfunction
How to Fix
- Check the level and condition of the transmission fluid
- Diagnose the hydraulic system for leaks
- Check the operation of the pressure accumulator valve
- Clean or replace the transmission fluid filter
- Check the pressure sensor and its electrical circuit
Related codes
FAQ
What does the P171D code mean?
P171D is an OBD-II diagnostic trouble code that indicates: Transmission Fluid Pressure Accumulator System Performance
What causes a P171D error code?
The most common causes of P171D include: Low or contaminated transmission fluid; Pressure accumulator valve fault; Leaks in the hydraulic system; Clogged channels or transmission fluid filter.
How do I fix a P171D diagnostic trouble code?
To fix P171D: Check the level and condition of the transmission fluid. Diagnose the hydraulic system for leaks. Check the operation of the pressure accumulator valve. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P171D?
Limited driving only, diagnose soon
How much does it cost to fix P171D?
The estimated repair cost for P171D is $17–89. Actual cost depends on your vehicle, location, and labor rates.
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