P06CB 2014 GMC Sierra Code - Cylinder 7 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
- P06CB 2014 GMC Sierra indicates Cylinder 7 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 P06CB 2014 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 P06CB 2014 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 P06CB 2014 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 P06CB 2014 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.
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Frequently Asked Questions about P06CB 2014 GMC Sierra Code
What does the OBDII code P06CB mean on a 2014 GMC Sierra?
The code P06CB indicates an issue with Cylinder 7's glow plug, specifically that it is not operating correctly or as expected.
What are the common symptoms of code P06CB on a 2014 GMC Sierra?
Symptoms may include difficulty starting the engine in cold weather, reduced fuel efficiency, rough idling, or the check engine light turning on.
What causes the P06CB code on a 2014 GMC Sierra?
Common causes include a faulty glow plug, damaged glow plug wiring or connectors, a malfunctioning glow plug control module, or corrosion in the electrical connections.
Can I drive my 2014 GMC Sierra with the P06CB code?
While the vehicle may still run, it could experience starting issues in cold temperatures and reduced performance. Driving with this code for an extended period is not recommended.
How do I diagnose the P06CB code on my 2014 GMC Sierra?
Start by inspecting the glow plug for Cylinder 7, checking for damage or wear. Then, examine the wiring, connectors, and glow plug control module for faults or corrosion.
How do I fix the P06CB code on a 2014 GMC Sierra?
Repairs may include replacing the Cylinder 7 glow plug, repairing damaged wiring or connectors, cleaning corroded electrical connections, or replacing the glow plug control module if necessary.
What is the purpose of the glow plug in a 2014 GMC Sierra?
The glow plug helps warm the engine cylinders to ensure efficient fuel combustion, especially in cold weather, aiding in engine starting and performance.
How much does it cost to fix the P06CB code on a 2014 GMC Sierra?
The cost can vary, but replacing a glow plug typically ranges from $100 to $300, including labor. Additional repairs for wiring or module issues may increase the cost.
Can a faulty glow plug cause long-term damage to my 2014 GMC Sierra?
Over time, a malfunctioning glow plug can lead to harder starts, increased emissions, and potential damage to other engine components if not addressed.
Do I need special tools to replace the Cylinder 7 glow plug on a 2014 GMC Sierra?
Yes, you may need basic mechanic tools and a glow plug removal tool to safely replace the glow plug. Consult the service manual for specific instructions.
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