P068C 2016 Chevrolet Silverado Code - Cylinder 7 Glow Plug Control Circuit Low Voltage
Quick Answer
The P068C diagnostic trouble code (DTC) for a 2016 Chevrolet Silverado refers to an issue with the glow plug control circuit in cylinder 7 experiencing low voltage. Common causes include Faulty glow plug in cylinder 7, Wiring issues in the glow plug control circuit, Problems with the engine control unit (ECU). 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 2016 Chevrolet Silverado indicates Cylinder 7 Glow Plug Control Circuit Low Voltage.
- Common causes
- Common causes include Faulty glow plug in cylinder 7, Wiring issues in the glow plug control circuit, Problems with the engine control unit (ECU).
- 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 2016 Chevrolet Silverado Description
The P068C diagnostic trouble code (DTC) for a 2016 Chevrolet Silverado refers to an issue with the glow plug control circuit in cylinder 7 experiencing low voltage. Glow plugs are essential components in diesel engines, as they help with cold starts by heating the combustion chamber. When the engine is cold, the glow plugs heat up to aid in combustion, and if the control circuit for one of these plugs is experiencing low voltage, it can lead to starting issues, rough idling, and decreased engine performance.
Common Causes of P068C 2016 Chevrolet Silverado
- Faulty glow plug in cylinder 7.
- Wiring issues in the glow plug control circuit.
- Problems with the engine control unit (ECU).
- Corrosion or poor connection in the electrical system.
- Issues with the battery or charging system affecting voltage supply.
Symptoms of P068C 2016 Chevrolet Silverado
- Difficulty starting the engine, especially in cold weather.
- Rough idling or misfires.
- Decreased fuel efficiency.
- Check engine light illuminated on the dashboard.
- Engine performance issues, such as lack of power or acceleration.
How to Fix P068C 2016 Chevrolet Silverado
- Begin by diagnosing the exact cause of the low voltage in the cylinder 7 glow plug control circuit using a diagnostic scanner.
- Inspect the glow plug in cylinder 7 to determine if it is faulty and needs replacement.
- Check the wiring and connections in the glow plug control circuit for any damage or corrosion, repairing or replacing as necessary.
- Test the battery and charging system to ensure they are providing the correct voltage to the glow plug control circuit.
- Clear the DTC and test drive the vehicle to confirm that the issue has been resolved.
Cost to Fix P068C 2016 Chevrolet Silverado
The typical repair cost for addressing a P068C code on a 2016 Chevrolet Silverado can vary depending on the exact cause of the issue. In general, replacing a glow plug and addressing wiring or connection issues can range from $200 to $500 in parts and labor. However, this estimate may vary based on the location of the repair shop, the make and model of the vehicle, and the specific engine type. It is recommended to check with local auto repair shops for a more accurate cost estimate based on your specific circumstances.
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Frequently Asked Questions about P068C 2016 Chevrolet Silverado Code
What does OBDII code P068C mean on a 2016 Chevrolet Silverado?
P068C indicates a low voltage issue in the Cylinder 7 glow plug control circuit, which helps with cold engine starts in diesel engines.
What are the symptoms of code P068C in a 2016 Chevrolet Silverado?
Common symptoms include difficulty starting in cold weather, rough idling, reduced fuel efficiency, and an illuminated check engine light.
What causes code P068C to appear in a 2016 Chevrolet Silverado?
Possible causes include a faulty glow plug, damaged wiring or connectors in the glow plug circuit, a malfunctioning glow plug control module, or a weak battery.
Can I drive my 2016 Chevrolet Silverado with code P068C active?
While the truck may still be drivable, ignoring the issue could lead to harder cold starts, engine misfires, or additional damage to the glow plug system.
How do I diagnose code P068C on a 2016 Chevrolet Silverado?
Start by inspecting the wiring and connectors for damage, test the Cylinder 7 glow plug for proper resistance, and check the glow plug control module for faults.
How do I fix code P068C on a 2016 Chevrolet Silverado?
Repairs may involve replacing the faulty glow plug, repairing damaged wiring or connectors, or replacing the glow plug control module.
What tools do I need to fix code P068C on a 2016 Chevrolet Silverado?
Basic tools include a multimeter for electrical testing, a scan tool for clearing the code, and possibly a socket set for removing the glow plug.
Does code P068C always mean the glow plug is bad?
No, the issue could also stem from damaged wiring, a faulty control module, or poor electrical connections in the circuit.
How much does it cost to fix code P068C on a 2016 Chevrolet Silverado?
Repair costs can vary, but replacing a glow plug typically costs $50-$150 for parts and labor, while control module repairs could be more expensive.
Can cold weather worsen the effects of code P068C on a 2016 Chevrolet Silverado?
Yes, cold weather can exacerbate starting issues because the glow plugs are critical for warming the engine during cold starts.
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