P068E 2018 Chevrolet Silverado Code - Cylinder 8 Glow Plug Control Circuit Low Voltage
Quick Answer
The P068E diagnostic trouble code (DTC) for a 2018 Chevrolet Silverado specifically indicates an issue with the Cylinder 8 Glow Plug Control Circuit experiencing low voltage. Common causes include Faulty glow plug in Cylinder 8, Damaged wiring or connectors in the glow plug control circuit, Malfunctioning glow plug relay. 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
- P068E 2018 Chevrolet Silverado indicates Cylinder 8 Glow Plug Control Circuit Low Voltage.
- Common causes
- Common causes include Faulty glow plug in Cylinder 8, Damaged wiring or connectors in the glow plug control circuit, Malfunctioning glow plug relay.
- 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 P068E 2018 Chevrolet Silverado Description
The P068E diagnostic trouble code (DTC) for a 2018 Chevrolet Silverado specifically indicates an issue with the Cylinder 8 Glow Plug Control Circuit experiencing low voltage. Glow plugs are essential components in diesel engines that aid in starting the engine by heating the combustion chamber during cold weather. When the engine is cold, the glow plugs heat up to ensure proper ignition of the fuel-air mixture. The control circuit is responsible for managing the operation of the glow plug in Cylinder 8, which is crucial for the engine to start smoothly and efficiently.
Common Causes of P068E 2018 Chevrolet Silverado
- Faulty glow plug in Cylinder 8.
- Damaged wiring or connectors in the glow plug control circuit.
- Malfunctioning glow plug relay.
- Issues with the engine control module (ECM).
- Corrosion or poor connections in the electrical system.
Symptoms of P068E 2018 Chevrolet Silverado
- Difficulty starting the engine, especially in cold weather.
- Rough idling or engine misfires.
- Reduced power output.
- Increased fuel consumption.
- Engine stalling or hesitation during acceleration.
How to Fix P068E 2018 Chevrolet Silverado
- Begin by diagnosing the specific cause of the low voltage in the Cylinder 8 glow plug control circuit using a diagnostic scanner.
- Inspect the glow plug in Cylinder 8 to determine if it is functioning properly. Replace if necessary.
- Check the wiring and connectors in the control circuit for any damage or corrosion. Repair or replace as needed.
- Test the glow plug relay to ensure it is operating correctly. Replace if faulty.
- If the issue persists, inspect the engine control module (ECM) for any faults and consider reprogramming or replacing it if necessary.
Cost to Fix P068E 2018 Chevrolet Silverado
The typical repair costs for addressing a Cylinder 8 Glow Plug Control Circuit Low Voltage issue in a 2018 Chevrolet Silverado can vary depending on the specific cause of the problem. Parts such as a new glow plug, wiring harness, connectors, relay, or ECM may need to be purchased, along with labor costs for diagnosis and repair. On average, the total repair cost for this issue could range from $200 to $600, including parts and labor. However, it's important to note that actual costs can vary based on factors such as location, vehicle make and model, and the rates charged by auto repair shops. It's recommended to obtain quotes from local shops to get a more accurate estimate for the repair. Labor rates at auto repair shops typically range from $80 to $150 per hour, but rates may be higher at dealerships or in metropolitan areas.
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Frequently Asked Questions about P068E 2018 Chevrolet Silverado Code
1. What does the OBDII code P068E mean on a 2018 Chevrolet Silverado?
P068E indicates an issue with the cylinder 8 glow plug control circuit, specifically low voltage, which affects the glow plug's ability to heat properly.
2. What are common symptoms of code P068E on a 2018 Chevrolet Silverado?
Symptoms include difficulty starting the engine in cold weather, rough idling, reduced fuel efficiency, and an illuminated check engine light.
3. What causes the P068E code on a 2018 Chevrolet Silverado?
Common causes include a faulty glow plug, damaged wiring or connectors in the glow plug circuit, a bad glow plug control module, or corroded electrical connections.
4. Can I drive my 2018 Chevrolet Silverado with the P068E code?
While the vehicle may still run, driving with a P068E code can lead to hard starts, especially in cold weather, and potential long-term engine damage. It's best to address the issue promptly.
5. How do I diagnose the P068E code on my 2018 Chevrolet Silverado?
Diagnosis involves checking the glow plug resistance, inspecting the wiring and connectors, testing the glow plug control module, and verifying the power supply to the circuit.
6. How do I fix the P068E code on a 2018 Chevrolet Silverado?
Repairs may include replacing the faulty glow plug, repairing or replacing damaged wiring or connectors, cleaning corroded terminals, or replacing the glow plug control module if necessary.
7. Is the P068E code specific to cylinder 8 on a 2018 Chevrolet Silverado?
Yes, this code specifically refers to the glow plug control circuit for cylinder 8, indicating an issue localized to that cylinder.
8. How much does it cost to fix the P068E code on a 2018 Chevrolet Silverado?
Repair costs vary, but replacing a single glow plug typically ranges from $100 to $300, depending on labor and parts. Additional costs may apply for wiring or module repairs.
9. Can a bad battery cause the P068E code on a 2018 Chevrolet Silverado?
Yes, a weak or failing battery can result in insufficient voltage to the glow plug circuit, potentially triggering the P068E code.
10. How can I prevent the P068E code from occurring again on my 2018 Chevrolet Silverado?
Regular maintenance, including inspecting the glow plugs, wiring, and battery, can help prevent issues that lead to the P068E code.
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