P068C Chevrolet Code - Cylinder 7 Glow Plug Control Circuit Low Voltage
Quick Answer
The P068C Chevrolet diagnostic trouble code (DTC) specifically relates to the Cylinder 7 Glow Plug Control Circuit Low Voltage. Common causes include Faulty glow plug control module, Damaged or corroded wiring in the glow plug circuit, Defective glow plug in cylinder 7. 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
- P068C Chevrolet indicates Cylinder 7 Glow Plug Control Circuit Low Voltage.
- Common causes
- Common causes include Faulty glow plug control module, Damaged or corroded wiring in the glow plug circuit, Defective glow plug in cylinder 7.
- 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 P068C Chevrolet Description
The P068C Chevrolet diagnostic trouble code (DTC) specifically relates to the Cylinder 7 Glow Plug Control Circuit Low Voltage. In diesel engines, glow plugs are crucial components that assist with cold starts by heating the combustion chamber. When the engine is cold, the glow plugs warm up to ensure proper ignition and combustion of the fuel-air mixture. The glow plug control module is responsible for managing the operation of the glow plugs, ensuring they reach the necessary temperature for efficient starting.
Common Causes of P068C Chevrolet
- Faulty glow plug control module.
- Damaged or corroded wiring in the glow plug circuit.
- Defective glow plug in cylinder 7.
- Issues with the PCM or ECM (Engine Control Module).
- Poor electrical connections or grounds in the glow plug system.
Symptoms of P068C Chevrolet
- Long cranking time before the engine starts.
- Rough idle or misfiring during cold starts.
- Decreased engine performance and power.
- Illumination of the Check Engine Light on the dashboard.
- Increased exhaust emissions due to incomplete combustion.
How to Fix P068C Chevrolet
- Begin by performing a visual inspection of the glow plug control module, wiring, and glow plug in cylinder 7. Look for any signs of damage, corrosion, or loose connections.
- Test the glow plug control module using a multimeter to check for proper voltage output. Replace the module if it is not functioning correctly.
- Check the wiring harness for continuity and repair any damaged wires or connections.
- Test the glow plug in cylinder 7 to ensure it is operating within specifications. Replace the glow plug if necessary.
- Clear the DTC using a diagnostic scanner and test the vehicle to verify that the issue has been resolved.
Cost to Fix P068C Chevrolet
The typical repair costs for addressing a P068C Chevrolet code can vary depending on the extent of the issue and the specific components that require replacement. On average, the parts for this repair, including a new glow plug control module and glow plug, can range from $150 to $300. Labor costs at an auto repair shop may add an additional $100 to $200, bringing the total estimate to approximately $250 to $500. However, it's essential to note that labor rates can vary significantly based on location, shop rates, and the complexity of the repair. It's advisable to obtain multiple quotes from reputable repair facilities to determine the most cost-effective solution for resolving this issue.
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Information for Specific Chevrolet Models
- P068C 2014 Chevrolet Silverado — Cylinder 7 Glow Plug Control Circuit Low Voltage
- P068C 2015 Chevrolet Silverado — Cylinder 7 Glow Plug Control Circuit Low Voltage
- P068C 2016 Chevrolet Silverado — Cylinder 7 Glow Plug Control Circuit Low Voltage
- P068C 2017 Chevrolet Silverado — Cylinder 7 Glow Plug Control Circuit Low Voltage
- P068C 2018 Chevrolet Silverado — Cylinder 7 Glow Plug Control Circuit Low Voltage
Frequently Asked Questions about P068C Chevrolet Code
What does the OBDII code P068C mean on a Chevrolet?
P068C indicates a low voltage issue in the Cylinder 7 Glow Plug Control Circuit, which is essential for proper glow plug operation in diesel engines.
What are the symptoms of the P068C code on a Chevrolet?
Common symptoms include difficulty starting the engine, rough idling, decreased fuel efficiency, and possibly an illuminated check engine light.
What causes the P068C code on a Chevrolet?
The code can be caused by a faulty glow plug, damaged wiring or connectors in the circuit, a malfunctioning glow plug control module, or insufficient battery voltage.
Can I drive my Chevrolet with the P068C code?
While your vehicle may still be drivable, operating it with this code can lead to starting difficulties and reduced performance, especially in cold weather.
How do I diagnose the P068C code on a Chevrolet?
Diagnosis involves checking the Cylinder 7 glow plug for proper function, inspecting wiring and connectors for damage, testing the glow plug control module, and ensuring adequate battery voltage.
How do I fix the P068C code on a Chevrolet?
Repairs may include replacing the Cylinder 7 glow plug, repairing or replacing damaged wiring, cleaning corroded connectors, or replacing the glow plug control module.
Does the P068C code only apply to diesel engines?
Yes, this code is specific to diesel engines, as glow plugs are used to assist in starting them by heating the cylinders.
Can a weak battery cause the P068C code on a Chevrolet?
Yes, a weak or failing battery can result in insufficient voltage to the glow plug circuit, triggering the P068C code.
Will clearing the P068C code fix the issue?
Clearing the code will not fix the underlying problem; it will likely return unless the root cause is addressed.
How much does it typically cost to fix the P068C code on a Chevrolet?
Repair costs can vary widely based on the cause, ranging from $50 for a glow plug replacement to $300 or more for a new control module.
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