P171A Code - Transmission Fluid Pressure Accumulator Solenoid Valve Control Circuit
Quick Answer
The automatic transmission auxiliary fluid accumulator is used to supply transmission fluid line pressure following an Autostop event. Common causes include Faulty Automatic Transmission Accumulator Solenoid Valve, Automatic Transmission Accumulator Solenoid Valve harness is open or shorted, Automatic Transmission Accumulator Solenoid Valve circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P171A indicates Transmission Fluid Pressure Accumulator Solenoid Valve Control Circuit.
- Common causes
- Common causes include Faulty Automatic Transmission Accumulator Solenoid Valve, Automatic Transmission Accumulator Solenoid Valve harness is open or shorted, Automatic Transmission Accumulator Solenoid Valve circuit poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P171A Description
What are the Possible Causes of the DTC P171A?
- Faulty Automatic Transmission Accumulator Solenoid Valve
- Automatic Transmission Accumulator Solenoid Valve harness is open or shorted
- Automatic Transmission Accumulator Solenoid Valve circuit poor electrical connection
- Faulty Hybrid/EV Powertrain Control Module 1
How to Fix the DTC P171A?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P171A code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Information for Specific Makes
- P171A Buick — Transmission Fluid Pressure Accumulator Solenoid Valve Control Circuit
- P171A Cadillac — Transmission Fluid Pressure Accumulator Solenoid Valve Control Circuit
- P171A Chevrolet — Transmission Fluid Pressure Accumulator Solenoid Valve Control Circuit
- P171A GMC — Transmission Fluid Pressure Accumulator Solenoid Valve Control Circuit
Frequently Asked Questions about P171A Code
1. What are the common symptoms of OBDII code P171A related to the Transmission Fluid Pressure Accumulator Solenoid Valve Control Circuit?
- Common symptoms include harsh shifting, transmission slipping, poor fuel economy, and illuminated Check Engine Light.
2. What are the possible causes of OBDII code P171A?
- The code P171A can be caused by a faulty transmission fluid pressure accumulator solenoid valve, damaged wiring or connectors in the control circuit, low transmission fluid level, or a malfunctioning transmission control module.
3. How can I diagnose the issue related to code P171A?
- To diagnose the issue, a thorough inspection of the transmission fluid pressure accumulator solenoid valve, wiring, connectors, and transmission fluid level is necessary. Using a scan tool to retrieve the specific fault code can also aid in diagnosis.
4. Can I continue driving my vehicle with OBDII code P171A?
- It is not recommended to drive your vehicle with an unresolved P171A code, as it can lead to further damage to the transmission system and potentially result in costly repairs.
5. How can I repair OBDII code P171A?
- Repairing code P171A may involve replacing the faulty transmission fluid pressure accumulator solenoid valve, repairing damaged wiring or connectors, checking and refilling the transmission fluid, or reprogramming the transmission control module.
6. Is it possible to clear the OBDII code P171A without fixing the underlying issue?
- Clearing the code without addressing the underlying issue will not solve the problem permanently. The Check Engine Light may temporarily turn off, but the issue will likely resurface.
7. Are there any preventative maintenance tips to avoid OBDII code P171A?
- Regularly checking and maintaining proper transmission fluid levels, ensuring the transmission system is in good condition, and addressing any transmission-related symptoms promptly can help prevent code P171A.
8. How much does it typically cost to repair OBDII code P171A?
- The cost of repairing code P171A can vary depending on the specific cause of the issue, the extent of the damage, and labor rates. It is recommended to consult a trusted mechanic for an accurate cost estimate.
9. Can a DIY enthusiast fix OBDII code P171A at home?
- While some aspects of diagnosing and repairing code P171A may be possible for DIY enthusiasts with the right tools and knowledge, working on transmission-related issues can be complex and challenging. It is advisable to seek professional help for such repairs.
10. Is OBDII code P171A a common issue in certain vehicle makes and models?
- OBDII code P171A related to the Transmission Fluid Pressure Accumulator Solenoid Valve Control Circuit may be more common in certain vehicle makes and models known for transmission problems or issues with solenoid valves.
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