P067F 2015 GMC Sierra Code - Cylinder 6 Glow Plug Control Circuit High Voltage
Quick Answer
n the diesel engine, air alone is compressed in the cylinder. Common causes include Faulty cylinder #6 glow plug, Cylinder #6 glow plug harness is open or shorted, Cylinder #6 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
- P067F 2015 GMC Sierra indicates Cylinder 6 Glow Plug Control Circuit High Voltage.
- Common causes
- Common causes include Faulty cylinder #6 glow plug, Cylinder #6 glow plug harness is open or shorted, Cylinder #6 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 P067F 2015 GMC Sierra 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 P067F 2015 GMC Sierra?
- Faulty cylinder #6 glow plug
- Cylinder #6 glow plug harness is open or shorted
- Cylinder #6 glow plug circuit poor electrical connection
- Faulty Glow Plug Control Module
How to Fix the DTC P067F 2015 GMC Sierra?
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 P067F 2015 GMC Sierra 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.
Need more information about the P067F 2015 GMC Sierra code?
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Frequently Asked Questions about P067F 2015 GMC Sierra Code
1. What are the common symptoms of OBDII code P067F in a 2015 GMC Sierra related to Cylinder 6 Glow Plug Control Circuit High Voltage?
The common symptoms include rough idling, decreased fuel efficiency, difficulty starting the engine, and the Check Engine Light illuminating.
2. What are the possible causes of OBDII code P067F in a 2015 GMC Sierra indicating Cylinder 6 Glow Plug Control Circuit High Voltage?
Potential causes include a faulty glow plug, damaged wiring or connectors in the glow plug circuit, a defective glow plug control module, or issues with the engine control module (ECM).
3. How can I diagnose the issue related to OBDII code P067F in my 2015 GMC Sierra Cylinder 6 Glow Plug Control Circuit High Voltage?
Diagnosis typically involves checking the glow plug resistance, inspecting the wiring and connectors for any damage, testing the glow plug control module, and scanning the ECM for any related faults.
4. Can I continue to drive my 2015 GMC Sierra with OBDII code P067F indicating Cylinder 6 Glow Plug Control Circuit High Voltage?
It is not recommended to drive the vehicle with this code present, as it can lead to further engine damage and potential safety hazards. It is advisable to address the issue promptly.
5. How can I repair OBDII code P067F in my 2015 GMC Sierra related to Cylinder 6 Glow Plug Control Circuit High Voltage?
Repairing the issue may involve replacing the faulty glow plug, repairing or replacing damaged wiring or connectors, replacing the glow plug control module, or reprogramming the engine control module if necessary.
6. Are there any tips for preventing OBDII code P067F in my 2015 GMC Sierra Cylinder 6 Glow Plug Control Circuit High Voltage from recurring?
Regular maintenance of the glow plug system, ensuring proper electrical connections, using high-quality glow plugs, and addressing any related issues promptly can help prevent the recurrence of this code.
7. How much does it typically cost to repair OBDII code P067F in a 2015 GMC Sierra related to Cylinder 6 Glow Plug Control Circuit High Voltage?
The cost of repair can vary depending on the exact cause of the issue, the parts needed, and labor charges. It is advisable to consult a mechanic for an accurate estimate.
8. Can a DIY enthusiast with basic automotive knowledge repair OBDII code P067F in a 2015 GMC Sierra Cylinder 6 Glow Plug Control Circuit High Voltage?
While some basic troubleshooting and repairs can be attempted by DIY enthusiasts, diagnosing and repairing this code may require specialized tools and expertise. It is recommended to consult a professional mechanic for proper diagnosis and repair.
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