P06C5 2017 GMC Sierra Code - Cylinder 1 Glow Plug Incorrect
Quick Answer
n the diesel engine, air alone is compressed in the cylinder. Common causes include Faulty cylinder #1 glow plug, Cylinder #1 glow plug harness is open or shorted, Cylinder #1 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
- P06C5 2017 GMC Sierra indicates Cylinder 1 Glow Plug Incorrect.
- Common causes
- Common causes include Faulty cylinder #1 glow plug, Cylinder #1 glow plug harness is open or shorted, Cylinder #1 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 P06C5 2017 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. A Diagnostic Trouble Code (DTC) will be set if the Glow Plug resistance is not within a calibrated range.
What are the Possible Causes of the DTC P06C5 2017 GMC Sierra?
- Faulty cylinder #1 glow plug
- Cylinder #1 glow plug harness is open or shorted
- Cylinder #1 glow plug circuit poor electrical connection
- Faulty Glow Plug Control Module
How to Fix the DTC P06C5 2017 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 P06C5 2017 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 P06C5 2017 GMC Sierra code?
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Frequently Asked Questions about P06C5 2017 GMC Sierra Code
What does the OBDII code P06C5 mean on a 2017 GMC Sierra?
The P06C5 code indicates that the glow plug in cylinder 1 is not functioning correctly, which may impact cold starting and engine performance.
What are common symptoms of the P06C5 code on a 2017 GMC Sierra?
Symptoms may include difficulty starting the engine in cold weather, poor fuel efficiency, a check engine light, and reduced engine performance.
What causes the P06C5 code to appear on a 2017 GMC Sierra?
Common causes include a faulty glow plug, damaged glow plug control module, wiring issues, or corrosion in the connectors.
How do I diagnose the P06C5 code on my 2017 GMC Sierra?
Diagnosis involves checking the glow plug and its wiring for damage, testing the glow plug's resistance, and inspecting the glow plug control module for faults.
Can I drive my 2017 GMC Sierra with the P06C5 code?
While the vehicle may still be drivable, it could experience poor cold-start performance, and ignoring the issue may lead to further engine problems.
How do I fix a P06C5 code on my 2017 GMC Sierra?
Fixing the code typically involves replacing the faulty glow plug in cylinder 1, repairing damaged wiring, or replacing the glow plug control module if necessary.
How much does it cost to repair the P06C5 code on a 2017 GMC Sierra?
The cost can vary, but replacing a glow plug typically ranges from $100 to $250, including parts and labor, depending on your location and shop rates.
Do I need special tools to fix the P06C5 code on my GMC Sierra?
Basic tools like a digital multimeter and socket set are needed for testing and replacing the glow plug, but specialized tools may be required for certain repairs.
Can a weak battery cause the P06C5 code on a 2017 GMC Sierra?
Yes, a weak battery can reduce the voltage supplied to the glow plug system, potentially triggering the P06C5 code.
Will clearing the P06C5 code solve the issue on my 2017 GMC Sierra?
Clearing the code may turn off the check engine light temporarily, but it won't resolve the underlying problem causing the code.
Discuss the causes and fixes for P06C5 2017 GMC Sierra OBDII Code
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