P066E 2014 Chevrolet Silverado Code - Cylinder 3 Glow Plug Control Circuit Low Voltage
Quick Answer
The diagnostic trouble code P066E in a 2014 Chevrolet Silverado indicates an issue with the glow plug control circuit in cylinder 3. Common causes include Faulty glow plug in cylinder 3, Wiring issues or damaged connectors in the glow plug control circuit, Malfunctioning 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
- P066E 2014 Chevrolet Silverado indicates Cylinder 3 Glow Plug Control Circuit Low Voltage.
- Common causes
- Common causes include Faulty glow plug in cylinder 3, Wiring issues or damaged connectors in the glow plug control circuit, Malfunctioning 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.
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Code P066E 2014 Chevrolet Silverado Description
The diagnostic trouble code P066E in a 2014 Chevrolet Silverado indicates an issue with the glow plug control circuit in cylinder 3. Glow plugs are essential components in diesel engines, especially during cold starts, as they heat up the combustion chamber to facilitate ignition. When the control circuit for the glow plug in cylinder 3 is experiencing low voltage, it can lead to difficulties in starting the engine, reduced fuel efficiency, and potential engine misfires.
Common Causes of P066E 2014 Chevrolet Silverado
- Faulty glow plug in cylinder 3.
- Wiring issues or damaged connectors in the glow plug control circuit.
- Malfunctioning glow plug control module.
- Corrosion or poor connections in the circuit.
- Electrical issues such as a blown fuse or relay related to the glow plug system.
Symptoms of P066E 2014 Chevrolet Silverado
- Difficulty starting the engine, especially in cold weather.
- Reduced fuel efficiency.
- Engine misfires or rough idling.
- Check engine light illuminated on the dashboard.
- Decreased engine performance and power.
How to Fix P066E 2014 Chevrolet Silverado
- Begin by diagnosing the specific cause of the low voltage in the glow plug control circuit for cylinder 3 using a diagnostic scanner.
- Inspect the glow plug in cylinder 3 for any signs of damage or wear and replace if necessary.
- Check the wiring and connectors in the glow plug control circuit for any breaks, corrosion, or loose connections. Repair or replace as needed.
- Test the glow plug control module to ensure it is functioning correctly and replace if faulty.
- Clear the diagnostic trouble code from the vehicle's computer system and test the vehicle to ensure the issue has been resolved.
Cost to Fix P066E 2014 Chevrolet Silverado
The cost of repairing a cylinder 3 glow plug control circuit with low voltage in a 2014 Chevrolet Silverado can vary depending on the specific cause of the issue. On average, the parts required for this repair, including a new glow plug, wiring components, and possibly a control module, can range from $100 to $300. Labor costs at an auto repair shop typically range from $80 to $150 per hour, with the total repair time estimated at 1-2 hours. Therefore, the total repair cost could be between $180 and $450, excluding any diagnostic fees or taxes. It's recommended to consult with a local auto repair shop for a more accurate estimate based on your location and vehicle specifications.
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Frequently Asked Questions about P066E 2014 Chevrolet Silverado Code
What does the OBDII code P066E mean on a 2014 Chevrolet Silverado?
P066E indicates a low voltage issue in the cylinder 3 glow plug control circuit, which can affect the glow plug's ability to heat properly during cold starts.
What are the symptoms of code P066E in a 2014 Chevrolet Silverado?
Common symptoms include difficulty starting the engine in cold weather, poor fuel combustion, increased exhaust smoke, and potentially reduced engine performance.
What causes the P066E code on a 2014 Chevrolet Silverado?
Possible causes include a faulty glow plug, damaged wiring or connections in the cylinder 3 glow plug circuit, a malfunctioning glow plug control module, or corrosion in electrical components.
How can I diagnose the P066E code in my 2014 Chevrolet Silverado?
Start by inspecting the cylinder 3 glow plug and its wiring for damage or corrosion. Use a multimeter to test for proper voltage and continuity in the circuit. Check the glow plug control module for faults.
Can a faulty glow plug cause the P066E code?
Yes, a malfunctioning glow plug can cause a low voltage issue, triggering the P066E code.
Is it safe to drive with the P066E code on a 2014 Chevrolet Silverado?
While the vehicle may still run, driving with this code can lead to difficulty starting in cold weather, reduced fuel efficiency, and increased emissions. It’s best to address the issue promptly.
How do I fix the P066E code on my 2014 Chevrolet Silverado?
Repairs may involve replacing the cylinder 3 glow plug, repairing or replacing damaged wiring, cleaning corroded connectors, or replacing the glow plug control module if necessary.
What tools do I need to repair the P066E code?
You’ll need basic tools like a socket set, multimeter, and possibly a scan tool to test the glow plug circuit and reset the code after repairs.
Can a bad glow plug control module cause the P066E code?
Yes, if the control module fails to supply adequate voltage to the cylinder 3 glow plug, it can trigger the P066E code.
How much does it cost to fix the P066E code on a 2014 Chevrolet Silverado?
Repair costs can vary depending on the cause. Replacing a single glow plug may cost $50-$150, while replacing a glow plug control module could cost $300-$500, excluding labor.
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