P171B Code - Transmission Fluid Pressure Accumulator Solenoid Valve Control Circuit Low Voltage
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
- P171B indicates Transmission Fluid Pressure Accumulator Solenoid Valve Control Circuit Low Voltage.
- 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 P171B Description
What are the Possible Causes of the DTC P171B?
- 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 P171B?
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 P171B 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
- P171B Buick — Transmission Fluid Pressure Accumulator Solenoid Valve Control Circuit Low Voltage
- P171B Cadillac — Transmission Fluid Pressure Accumulator Solenoid Valve Control Circuit Low Voltage
- P171B Chevrolet — Transmission Fluid Pressure Accumulator Solenoid Valve Control Circuit Low Voltage
- P171B GMC — Transmission Fluid Pressure Accumulator Solenoid Valve Control Circuit Low Voltage
Frequently Asked Questions about P171B Code
1. What are the common symptoms of OBDII code P171B?
- Common symptoms include rough shifting, hesitation during acceleration, transmission slipping, and potential transmission overheating.
2. What can cause the Transmission Fluid Pressure Accumulator Solenoid Valve Control Circuit Low Voltage fault code?
- The code P171B can be triggered by a faulty pressure accumulator solenoid valve, damaged wiring, low transmission fluid levels, or a failing transmission control module.
3. How serious is the P171B fault code?
- This code should be addressed promptly to avoid potential damage to the transmission system. Ignoring it can lead to further transmission issues and possible costly repairs.
4. What should I do if I get the P171B code?
- It is recommended to have the transmission system diagnosed by a professional mechanic to pinpoint the exact cause of the issue. Ignoring the code can lead to further damage.
5. Can I continue to drive my vehicle with the P171B fault code?
- It is not advisable to continue driving the vehicle with this fault code present, as it can lead to transmission performance issues and potential safety hazards.
6. How can I repair the Transmission Fluid Pressure Accumulator Solenoid Valve Control Circuit Low Voltage issue?
- Repair options include replacing the pressure accumulator solenoid valve, fixing any damaged wiring, ensuring proper transmission fluid levels, or addressing any issues with the transmission control module.
7. Is it possible to reset the P171B code without fixing the underlying issue?
- While you can clear the code using an OBDII scanner, it is essential to address the root cause of the problem to prevent future transmission issues.
8. Can a DIY enthusiast fix the P171B fault code?
- Depending on the cause of the issue, some DIYers with experience in automotive repairs may be able to address the problem. However, it is recommended to consult a professional for an accurate diagnosis and repair.
9. What is the typical cost to repair the P171B fault code?
- The cost of repairing the P171B code can vary depending on the underlying issue, parts needed, and labor costs. It is advisable to get a few quotes from reputable mechanics for an accurate estimate.
10. How can I prevent the P171B fault code from recurring in the future?
- Regular maintenance of the transmission system, including checking fluid levels, ensuring proper wiring connections, and addressing any issues promptly, can help prevent the reoccurrence of the P171B fault code.
Discuss the causes and fixes for P171B OBDII Code
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