P066F Ford Code - Cylinder 3 Glow Plug Control Circuit High
Quick Answer
The P066F diagnostic trouble code (DTC) indicates an issue with the cylinder 3 glow plug control circuit in a Ford vehicle. Common causes include Faulty glow plug in cylinder 3, Wiring or connection issues in the glow plug control circuit, Defective glow plug control module. 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
- P066F Ford indicates Cylinder 3 Glow Plug Control Circuit High.
- Common causes
- Common causes include Faulty glow plug in cylinder 3, Wiring or connection issues in the glow plug control circuit, Defective glow plug control module.
- 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 P066F Ford Description
The P066F diagnostic trouble code (DTC) indicates an issue with the cylinder 3 glow plug control circuit in a Ford vehicle. Glow plugs are essential components in diesel engines, as they help heat the combustion chamber to facilitate cold starts. When the engine is cold, the glow plug control module sends a signal to the glow plugs to heat up before starting the engine. In this case, the code specifically points to a high voltage condition in the circuit controlling the glow plug for cylinder 3.
Common Causes of P066F Ford
- Faulty glow plug in cylinder 3
- Wiring or connection issues in the glow plug control circuit
- Defective glow plug control module
- Corrosion or damage to the electrical components
- Engine overheating leading to glow plug failure
Symptoms of P066F Ford
- Hard starting or extended cranking time
- Rough idling or misfiring
- Reduced engine performance and power
- Increased fuel consumption
- Illumination of the check engine light
How to Fix P066F Ford
- Begin by visually inspecting the glow plug in cylinder 3 for any signs of damage or wear.
- Test the glow plug using a multimeter to check for continuity and proper functioning.
- Inspect the wiring and connections in the glow plug control circuit for any loose connections or corrosion.
- Check the glow plug control module for proper operation and replace if necessary.
- Clear the DTC from the vehicle's computer after completing the repairs and test the vehicle to ensure the issue has been resolved.
Cost to Fix P066F Ford
The cost of repairing a cylinder 3 glow plug control circuit high issue in a Ford vehicle can vary depending on the specific cause of the problem and the labor rates in your area. On average, replacing a faulty glow plug can cost between $50 and $150 per plug, while a glow plug control module replacement can range from $150 to $300. Labor costs can add another $100 to $300 to the total repair bill. Overall, you can expect to pay anywhere from $200 to $600 for parts and labor. It's recommended to obtain quotes from local auto repair shops to get a more accurate estimate based on your vehicle's make and model.
Need more information about the P066F Ford code?
Need more information on how to fix the P066F Ford code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P066F Ford code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P066F Ford Code
1. What are the common symptoms of OBDII code P066F in a Ford, indicating a Cylinder 3 Glow Plug Control Circuit High issue?
The common symptoms include rough engine idle, reduced engine performance, and possible illumination of the check engine light.
2. What are the potential causes of the Cylinder 3 Glow Plug Control Circuit High code (P066F) in Ford vehicles?
Possible causes include a faulty glow plug in cylinder 3, damaged wiring or connectors in the glow plug circuit, or a malfunctioning glow plug control module.
3. How can I diagnose the Cylinder 3 Glow Plug Control Circuit High issue in my Ford when experiencing this OBDII code?
Diagnosis typically involves checking the glow plug in cylinder 3 for proper function, inspecting the wiring and connectors for any damage, and testing the glow plug control module for faults.
4. Can I continue driving my Ford with the P066F code related to the Cylinder 3 Glow Plug Control Circuit High issue?
It is not recommended to continue driving with this code unresolved, as it can lead to further engine problems and potential damage if left unattended.
5. Are there any DIY repair tips for addressing the P066F code in a Ford related to Cylinder 3 Glow Plug Control Circuit High?
DIY enthusiasts can start by inspecting the glow plug in cylinder 3, checking the wiring harness for any visible damage, and ensuring the connectors are securely attached.
6. How much does it typically cost to repair the Cylinder 3 Glow Plug Control Circuit High issue causing the P066F code in a Ford?
The cost of repair can vary depending on the exact cause of the issue, but it may involve replacing the faulty glow plug, repairing damaged wiring, or replacing the glow plug control module.
7. Is it necessary to visit a professional mechanic to resolve the P066F code related to the Cylinder 3 Glow Plug Control Circuit High issue in my Ford?
While some DIY repairs may be possible, consulting a professional mechanic is recommended for a thorough diagnosis and proper repair of the glow plug control circuit issue.
8. Can a faulty glow plug in cylinder 3 cause other problems besides triggering the P066F code in a Ford?
Yes, a faulty glow plug can lead to issues such as hard starting in cold weather, reduced fuel efficiency, and potential damage to the engine if not addressed promptly.
9. How long does it typically take to repair the Cylinder 3 Glow Plug Control Circuit High issue causing the P066F code in a Ford?
The repair time can vary based on the extent of the issue and the availability of parts, but it usually takes a few hours to a day to diagnose and fix the problem.
10. Is the Cylinder 3 Glow Plug Control Circuit High code (P066F) a common issue in Ford vehicles, or is it relatively rare?
While not as common as some other OBDII codes, the Cylinder 3 Glow Plug Control Circuit High issue can occur in Ford vehicles, especially in diesel engines with glow plug systems.
Discuss the causes and fixes for P066F Ford OBDII Code
Code P066F Ford 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.