P068E 2014 Chevrolet Silverado Code - Cylinder 8 Glow Plug Control Circuit Low Voltage
Quick Answer
n the diesel engine, air alone is compressed in the cylinder. Common causes include Faulty cylinder #8 glow plug, Cylinder #8 glow plug harness is open or shorted, Cylinder #8 glow plug circuit poor electrical connection. 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 2014 Chevrolet Silverado indicates Cylinder 8 Glow Plug Control Circuit Low Voltage.
- Common causes
- Common causes include Faulty cylinder #8 glow plug, Cylinder #8 glow plug harness is open or shorted, Cylinder #8 glow plug circuit poor electrical connection.
- 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.
Code P068E 2014 Chevrolet Silverado Description
Control of the glow plugs is accomplished by the Glow Plug Control Module. The nominal voltage for the glow plugs is 5.4 volts. When the ignition is turned On, the Glow Plug Control Module applies 7.2 V for 2.2 s, then 5.7 V for 0.8 s, and then 5.4 V until 1200°C (2192°F) is reached. The maximum voltage of the system is 10 V. While the engine is running the voltage will vary between 4.7 - 10 V when in closed loop control to maintain a glow plug temperature that ranges from 1150° - 1180°C (2102° - 2156°F). The temperature and the power consumption are controlled between the Engine Control Module (ECM) and the Glow Plug Control Module within a wide range to suit the engine's pre-heating requirements. Each glow plug is energized individually. This capability yields more optimum heat times for the glow plugs, thus pre - glow times can be kept to a minimum for a short wait to crank times and maximum glow plug durability.
What are the Possible Causes of the DTC P068E 2014 Chevrolet Silverado?
- Faulty cylinder #8 glow plug
- Cylinder #8 glow plug harness is open or shorted
- Cylinder #8 glow plug circuit poor electrical connection
- Faulty Glow Plug Control Module
How to Fix the DTC P068E 2014 Chevrolet Silverado?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P068E 2014 Chevrolet Silverado code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P068E 2014 Chevrolet Silverado Code
What does the OBDII code P068E mean for a 2014 Chevrolet Silverado?
P068E indicates a problem with the cylinder 8 glow plug control circuit, specifically low voltage detected by the PCM.
What are the symptoms of P068E on a 2014 Chevrolet Silverado?
Symptoms may include difficulty starting the engine, rough idling, decreased fuel efficiency, and an illuminated check engine light.
What causes the P068E code on a 2014 Silverado?
Common causes include a faulty glow plug, damaged wiring or connectors in the glow plug circuit, a bad glow plug control module, or corrosion in electrical connections.
Can I drive my 2014 Chevrolet Silverado with the P068E code?
While the truck may still be drivable, prolonged operation with this code could lead to starting issues or further damage to the glow plug circuit.
How do I diagnose the P068E code on a 2014 Silverado?
Check for damaged wiring, corroded connectors, or a failed glow plug. Using a multimeter to test voltage in the glow plug circuit can help pinpoint the issue.
How can the P068E code be fixed on a 2014 Chevrolet Silverado?
Repairs may include replacing the faulty glow plug, repairing or replacing damaged wiring, cleaning corroded connectors, or replacing the glow plug control module.
How much does it cost to fix the P068E code on a 2014 Silverado?
Costs can vary but typically range from $100 to $300 for parts and labor, depending on whether the glow plug or control module requires replacement.
Do I need special tools to fix the P068E code on my Silverado?
Basic tools like a multimeter, socket set, and wiring repair kit are often sufficient. Advanced diagnostics tools may be needed for PCM troubleshooting.
Can a faulty PCM cause the P068E code on a 2014 Silverado?
While rare, a malfunctioning PCM can misinterpret voltage signals and trigger the P068E code; testing the PCM may be necessary if other fixes fail.
What happens if I ignore the P068E code on my Silverado?
Ignoring this fault can lead to worsening cold start issues, decreased engine performance, and potential damage to other components in the glow plug system.
Discuss the causes and fixes for P068E 2014 Chevrolet Silverado OBDII Code
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