P179D Code - Coolant Oil Valve Electrical Fault
Quick Answer
The Engine Control Module (ECM) monitors the Coolant Oil Valve. Common causes include Faulty Coolant Oil Valve, Coolant Oil Valve harness is open or shorted, Coolant Oil 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
- P179D indicates Coolant Oil Valve Electrical Fault.
- Common causes
- Common causes include Faulty Coolant Oil Valve, Coolant Oil Valve harness is open or shorted, Coolant Oil 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 P179D Description
What are the Possible Causes of the DTC P179D?
- Faulty Coolant Oil Valve
- Coolant Oil Valve harness is open or shorted
- Coolant Oil Valve circuit poor electrical connection
How to Fix the DTC P179D?
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 P179D 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
- P179D Audi — Coolant Oil Valve Electrical Fault
- P179D Buick — Transmission Clutch 2 Slip Adapt
- P179D Cadillac — Transmission Clutch 2 Slip Adapt
- P179D Chevrolet — Transmission Clutch 2 Slip Adapt
- P179D GMC — Transmission Clutch 2 Slip Adapt
- P179D Volkswagen — Coolant Oil Valve Electrical Fault
Frequently Asked Questions about P179D Code
1. What does OBDII code P179D mean?
P179D indicates an electrical fault in the coolant oil valve, which may affect the regulation of engine or transmission oil temperature.
2. What are the common symptoms of code P179D?
Symptoms may include engine overheating, fluctuating oil temperatures, poor fuel efficiency, or the Check Engine Light turning on.
3. What causes the P179D code to appear?
The code can be caused by a faulty coolant oil valve, damaged wiring, poor electrical connections, or a malfunctioning control module.
4. Can I drive with a P179D code?
Driving with a P179D code is not recommended, as it may lead to overheating or other engine and transmission issues.
5. How do I diagnose a P179D code?
Start by inspecting the wiring and connectors for the coolant oil valve, then test the valve’s electrical circuit and functionality. A scan tool may also help pinpoint the issue.
6. How do I fix the P179D code?
Repairs may involve replacing the coolant oil valve, repairing damaged wiring, or addressing electrical connection issues.
7. Is replacing the coolant oil valve expensive?
The cost varies depending on the vehicle make and model, but it is generally a mid-range repair due to parts and labor.
8. Can a bad coolant oil valve cause engine damage?
Yes, if the valve fails to regulate oil temperature, it can lead to overheating or inadequate lubrication, potentially causing engine damage.
9. Will clearing the P179D code solve the problem?
Clearing the code without addressing the underlying issue will only temporarily remove the alert. The fault will likely reappear.
10. Can a low coolant level trigger the P179D code?
Low coolant levels are unlikely to directly trigger this code, but they can contribute to overheating, which may exacerbate related issues.
Discuss the causes and fixes for P179D OBDII Code
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