P179A Buick Code - Auxiliary Transmission Fluid Pump Overspeed
Quick Answer
The P179A Buick diagnostic trouble code indicates an issue with the auxiliary transmission fluid pump overspeed. Common causes include Faulty auxiliary transmission fluid pump, Electrical issues such as a malfunctioning transmission control module, Low transmission fluid levels or poor quality fluid. 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
- P179A Buick indicates Auxiliary Transmission Fluid Pump Overspeed.
- Common causes
- Common causes include Faulty auxiliary transmission fluid pump, Electrical issues such as a malfunctioning transmission control module, Low transmission fluid levels or poor quality fluid.
- 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.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code P179A Buick Description
The P179A Buick diagnostic trouble code indicates an issue with the auxiliary transmission fluid pump overspeed. In modern vehicles, auxiliary transmission fluid pumps are responsible for providing additional pressure to the transmission system, ensuring smooth gear changes and overall performance. When the pump operates at an excessive speed, it can lead to various problems within the transmission system.
Common Causes of P179A Buick
- Faulty auxiliary transmission fluid pump
- Electrical issues such as a malfunctioning transmission control module
- Low transmission fluid levels or poor quality fluid
- Mechanical failure within the transmission system
- Overheating of the transmission due to excessive load or driving conditions
Symptoms of P179A Buick
- Dashboard warning light illuminates
- Erratic shifting or hesitation during gear changes
- Transmission slipping or jerking
- Unusual noises coming from the transmission
- Reduced fuel efficiency due to transmission inefficiency
How to Fix P179A Buick
- Diagnose the specific cause of the overspeed condition by performing a comprehensive transmission system check.
- Inspect the auxiliary transmission fluid pump for any signs of damage or malfunction, replacing it if necessary.
- Check and refill transmission fluid to the proper level, ensuring the quality meets manufacturer specifications.
- Test the transmission system for proper operation and recalibrate the transmission control module if needed.
- Clear the diagnostic trouble code from the vehicle's computer system and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix P179A Buick
The typical repair costs for addressing an auxiliary transmission fluid pump overspeed issue can range from $200 to $800, depending on the specific cause of the problem and the extent of repairs needed. This estimate includes the cost of parts such as a new auxiliary transmission fluid pump, transmission fluid, and any additional components that may need replacement. Labor costs can vary depending on the location and the shop's hourly rates, which typically range from $80 to $150 per hour. It's advisable to consult with a certified mechanic or auto repair shop to obtain a more precise estimate based on your vehicle make and model.
Need more information about the P179A Buick code?
Need more information on how to fix the P179A Buick code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P179A Buick code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P179A Buick Code
1. What does the OBDII code P179A mean on a Buick?
P179A indicates "Auxiliary Transmission Fluid Pump Overspeed," meaning the auxiliary transmission fluid pump is spinning faster than its expected range.
2. What are the symptoms of code P179A in a Buick?
Common symptoms include transmission overheating, erratic shifting, reduced fuel efficiency, or the vehicle entering limp mode.
3. What causes the P179A code in a Buick?
Potential causes include a faulty auxiliary transmission fluid pump, a damaged or shorted wiring harness, a malfunctioning transmission control module (TCM), or low transmission fluid levels.
4. Can I drive my Buick with the P179A code?
Driving with this code is not recommended, as it may lead to further transmission damage or overheating issues if not addressed promptly.
5. How do I fix the P179A code on my Buick?
Repairs may include inspecting and replacing the auxiliary transmission fluid pump, checking and repairing wiring connections, updating or reprogramming the TCM, or replenishing transmission fluid.
6. How is the P179A code diagnosed?
A mechanic will use a scan tool to retrieve the code, inspect the auxiliary pump's operation, check for damaged wiring, and verify fluid levels and the TCM's functionality.
7. Is the auxiliary transmission fluid pump expensive to replace?
The cost will vary depending on the model, but replacing the auxiliary pump can range from $200 to $800, including parts and labor.
8. Can low transmission fluid cause the P179A code?
Yes, low or contaminated transmission fluid can cause the auxiliary pump to overspeed, triggering the P179A code.
9. Does the P179A code always mean the pump is bad?
Not necessarily. The issue could be related to wiring problems, a malfunctioning TCM, or other factors affecting pump operation.
10. How can I prevent the P179A code from recurring?
Regular transmission maintenance, including checking fluid levels and condition, inspecting wiring, and addressing TCM software updates, can help prevent this code.
Discuss the causes and fixes for P179A Buick OBDII Code
Code P179A Buick comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.