P06C5 2015 Chevrolet Silverado 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 2015 Chevrolet Silverado 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 2015 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. 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 2015 Chevrolet Silverado?
- 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 2015 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 P06C5 2015 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 P06C5 2015 Chevrolet Silverado Code
1. What does the OBDII code P06C5 mean on a 2015 Chevrolet Silverado?
The code P06C5 indicates "Cylinder 1 Glow Plug Incorrect," meaning the glow plug for cylinder 1 is not functioning as expected or has a circuit issue.
2. What are the common symptoms of the P06C5 code?
Symptoms may include difficulty starting the engine, rough idling when cold, reduced fuel efficiency, and an illuminated check engine light.
3. What causes the P06C5 code to appear?
Common causes include a faulty glow plug, damaged wiring or connectors in the glow plug circuit, a failed glow plug control module, or corrosion in the electrical connections.
4. Can I drive my 2015 Chevrolet Silverado with the P06C5 code?
Driving with this code is possible but not recommended for extended periods, as it can lead to poor cold-start performance and potentially damage the engine over time.
5. How do I diagnose the P06C5 code?
Diagnosis involves checking the glow plug for cylinder 1, inspecting the wiring and connectors for damage or corrosion, and testing the glow plug control module for proper operation.
6. How do I fix the P06C5 code on my Silverado?
Repairs may include replacing the faulty glow plug, repairing or replacing damaged wiring, cleaning corroded connections, or replacing the glow plug control module if necessary.
7. How much does it cost to repair the P06C5 code?
The repair cost varies but typically ranges from $150 to $300 for parts and labor, depending on whether you replace just the glow plug or other components like the control module.
8. Can a bad glow plug affect engine performance?
Yes, a bad glow plug can make cold starts difficult, cause rough idling, and reduce engine efficiency, especially in colder weather.
9. How can I prevent the P06C5 code from returning?
Regularly inspect and maintain the glow plug system, check for corrosion in electrical connections, and replace glow plugs as recommended by the manufacturer.
10. Do I need special tools to replace a glow plug in my 2015 Silverado?
Yes, you may need basic tools like a socket set and a torque wrench, as well as a glow plug removal tool to avoid damaging the plug during replacement.
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