P171B GMC 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 GMC 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 GMC Description
What are the Possible Causes of the DTC P171B GMC?
- 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 GMC?
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 GMC 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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Frequently Asked Questions about P171B GMC Code
1. What are the common symptoms of OBDII code P171B GMC?
The common symptoms of code P171B GMC include harsh shifting, transmission slipping, and poor acceleration.
2. What could cause the Transmission Fluid Pressure Accumulator Solenoid Valve Control Circuit Low Voltage code to trigger?
Possible causes of code P171B GMC include a faulty transmission fluid pressure accumulator solenoid valve, damaged wiring or connectors, low transmission fluid level, or a malfunctioning transmission control module.
3. How can I diagnose the issue causing OBDII code P171B GMC?
Diagnosing the issue causing code P171B GMC typically involves checking the transmission fluid level and condition, inspecting the solenoid valve and its circuit for any damage, and using a diagnostic scanner to retrieve and analyze transmission-related data.
4. What are the repair options for fixing code P171B GMC?
Repair options for addressing code P171B GMC may include replacing the transmission fluid pressure accumulator solenoid valve, repairing any damaged wiring or connectors, ensuring the transmission fluid is at the correct level and in good condition, and reprogramming or replacing the transmission control module if necessary.
5. Can I continue driving my vehicle with OBDII code P171B GMC?
It is not recommended to continue driving your vehicle with code P171B GMC present, as it can lead to further damage to the transmission system and affect the overall drivability of the vehicle.
6. How serious is OBDII code P171B GMC?
Code P171B GMC is considered a serious issue as it affects the proper functioning of the transmission system, potentially leading to transmission failure if not addressed promptly.
7. Are there any preventive measures to avoid OBDII code P171B GMC?
Regular maintenance of the transmission system, including checking the fluid level and condition, can help prevent issues that may trigger code P171B GMC.
8. How much does it typically cost to repair OBDII code P171B GMC?
The cost of repairing code P171B GMC can vary depending on the specific underlying issue, parts needed, labor costs, and whether the repair is done at a dealership or an independent repair shop.
9. Can a DIY enthusiast fix OBDII code P171B GMC at home?
While some DIY enthusiasts may have the skills and tools to address code P171B GMC, it is recommended to consult a professional mechanic or technician for proper diagnosis and repair to ensure the issue is resolved correctly.
10. How long does it usually take to repair OBDII code P171B GMC?
The time needed to repair code P171B GMC can vary based on the extent of the issue and the availability of parts. It's best to consult with a mechanic for an accurate estimate of the repair time.
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