AutoCodes – Audi – P179D Audi

P179D Audi 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 Audi 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.

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Code Popularity 16,787

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jan 14, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P179D Audi Description

The Engine Control Module (ECM) monitors the Coolant Oil Valve. The ECM sets the OBDII code when the Coolant Oil Valve is not to factory specifications.

OBDII Code P179D Audi - Coolant Oil Valve Electrical Fault - AutoCodes.com — P179D Audi Code - Coolant Oil Valve Electrical Fault

What does this mean?

What are the Possible Causes of the DTC P179D Audi?

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 Audi?

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 Audi 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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Need more information on how to fix the P179D Audi code? Get Access to Factory Service Manuals

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P179D Audi Code

1. What are the common symptoms of OBDII code P179D in an Audi related to the Coolant Oil Valve Electrical Fault?

The common symptoms may include engine overheating, coolant leaks, engine misfires, and a decrease in fuel efficiency.

2. What are the possible causes of the OBDII code P179D related to the Coolant Oil Valve Electrical Fault in an Audi?

The possible causes can be a faulty coolant oil valve, wiring issues, a malfunctioning coolant temperature sensor, or a problem with the engine control module.

3. How can I diagnose the Coolant Oil Valve Electrical Fault causing the OBDII code P179D in my Audi?

Diagnosing the issue involves checking the coolant oil valve for proper operation, inspecting the wiring for any damage, testing the coolant temperature sensor, and scanning the engine control module for fault codes.

4. Can I continue driving my Audi with the OBDII code P179D related to the Coolant Oil Valve Electrical Fault?

It is not recommended to continue driving the vehicle with this fault as it can lead to serious engine damage due to overheating or coolant loss.

5. How can I repair the Coolant Oil Valve Electrical Fault triggering the OBDII code P179D in my Audi?

Repairing the issue involves replacing the faulty coolant oil valve, repairing any damaged wiring, replacing the coolant temperature sensor if necessary, and clearing the fault code with a diagnostic tool.

6. Are there any preventive maintenance tips to avoid the OBDII code P179D related to the Coolant Oil Valve Electrical Fault in my Audi?

Regularly checking the coolant level, monitoring the engine temperature, and addressing any cooling system issues promptly can help prevent this fault from occurring.

7. Will resetting the OBDII code P179D related to the Coolant Oil Valve Electrical Fault make it go away permanently?

Resetting the code may temporarily clear the fault, but if the underlying issue is not addressed, the code is likely to reappear once the fault is detected again.

8. Is it necessary to visit a dealership or can I repair the OBDII code P179D related to the Coolant Oil Valve Electrical Fault myself?

Depending on your skill level and access to tools, you may be able to repair the issue yourself. However, seeking professional help, especially for complex electrical faults, is recommended.

9. Can a low coolant level trigger the OBDII code P179D related to the Coolant Oil Valve Electrical Fault in an Audi?

Yes, a low coolant level can cause the engine to overheat and trigger this fault code. It is essential to maintain the proper coolant level to prevent such issues.

10. How long does it typically take to repair the OBDII code P179D related to the Coolant Oil Valve Electrical Fault in an Audi?

The repair time can vary depending on the exact cause of the fault and the extent of the repairs needed. It can range from a few hours to a full day, especially if diagnostics are involved.