P068F 2015 Chevrolet Silverado Code - Cylinder 8 Glow Plug Control Circuit High Voltage
Quick Answer
The P068F diagnostic trouble code (DTC) indicates an issue with the cylinder 8 glow plug control circuit in a 2015 Chevrolet Silverado. Common causes include Faulty glow plug, Wiring or connection issues 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
- P068F 2015 Chevrolet Silverado indicates Cylinder 8 Glow Plug Control Circuit High Voltage.
- Common causes
- Common causes include Faulty glow plug, Wiring or connection issues 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 P068F 2015 Chevrolet Silverado Description
The P068F diagnostic trouble code (DTC) indicates an issue with the cylinder 8 glow plug control circuit in a 2015 Chevrolet Silverado. The glow plug is a heating element that helps ignite the diesel fuel in the combustion chamber, especially during cold starts. The control circuit monitors and regulates the voltage sent to the glow plug to ensure proper operation. When the control circuit detects a high voltage, it can lead to various performance issues and potentially cause long-term damage if not addressed promptly.
Common Causes of P068F 2015 Chevrolet Silverado
- Faulty glow plug
- Wiring or connection issues in the glow plug control circuit
- Malfunctioning glow plug control module
- Corrosion or damage to electrical components
- Engine control module (ECM) failure
Symptoms of P068F 2015 Chevrolet Silverado
- Hard starting or extended cranking time
- Rough idle or misfiring
- Decreased fuel efficiency
- Illuminated check engine light
- Loss of power or acceleration
How to Fix P068F 2015 Chevrolet Silverado
- Diagnose the specific cause of the high voltage issue by conducting a thorough inspection of the glow plug, control circuit, and related components.
- Test the resistance of the glow plug and check for proper voltage supply to determine if the glow plug is faulty or if there are wiring issues.
- Replace the faulty glow plug, control module, or any damaged wiring or connectors as needed.
- Clear the DTC and reset the ECM to ensure the code does not reappear.
- Test drive the vehicle to verify that the issue has been resolved and that the symptoms have been eliminated.
Cost to Fix P068F 2015 Chevrolet Silverado
The cost of repairing a cylinder 8 glow plug control circuit high voltage issue in a 2015 Chevrolet Silverado can vary depending on the specific cause of the problem and the parts and labor required for the repair. On average, the cost of replacing a glow plug can range from $50 to $150 per plug, while a control module replacement may cost between $150 and $300. Labor costs can add an additional $100 to $300, depending on the shop's hourly rates. Overall, the total repair cost for this issue is likely to fall within the range of $200 to $600, but it's advisable to obtain a personalized estimate from a qualified mechanic or dealership.
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Frequently Asked Questions about P068F 2015 Chevrolet Silverado Code
What does the OBDII code P068F mean for a 2015 Chevrolet Silverado?
P068F indicates an issue with the Cylinder 8 Glow Plug Control Circuit, specifically detecting a high voltage condition.
What are the common symptoms of code P068F in a 2015 Silverado?
Symptoms may include difficulty starting the engine in cold weather, reduced fuel efficiency, an illuminated check engine light, and rough idling.
What causes a P068F code to appear in a 2015 Chevrolet Silverado?
Common causes include a faulty glow plug, damaged glow plug control module, corroded or loose electrical connections, or a shorted wiring harness.
How do I know if the glow plug for cylinder 8 is faulty?
A faulty glow plug may show signs of resistance outside the manufacturer's specifications when tested with a multimeter.
Can I drive my Silverado with a P068F code?
While the truck may still run, it’s not advisable to ignore the issue, as it can lead to poor cold starts and potentially cause further engine or emissions system damage.
How can I fix the P068F code on a 2015 Chevrolet Silverado?
Repairs may include replacing the faulty glow plug, repairing or replacing damaged wiring, cleaning corroded connections, or replacing the glow plug control module.
What tools are needed to diagnose and repair a P068F code?
You’ll need an OBDII scanner, a multimeter, basic hand tools, and potentially a wiring diagram for the glow plug circuit.
How much does it cost to repair a P068F code in a 2015 Silverado?
Costs vary but may range from $50 to $150 for a glow plug replacement, with higher costs if the glow plug control module or wiring needs repair.
Can cold weather trigger a P068F code?
Cold weather doesn’t directly cause the code but can make symptoms like hard starting more noticeable and exacerbate pre-existing issues.
Should the glow plugs on all cylinders be replaced if one fails?
It’s not mandatory, but replacing all glow plugs at once can ensure uniform performance and avoid future failures.
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