P06C8 Chevrolet Code - Cylinder 4 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
- P06C8 Chevrolet indicates Cylinder 4 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 P06C8 Chevrolet 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 P06C8 Chevrolet?
- 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 P06C8 Chevrolet?
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 P06C8 Chevrolet 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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Information for Specific Chevrolet Models
- P06C8 2014 Chevrolet Silverado — Cylinder 4 Glow Plug Incorrect
- P06C8 2015 Chevrolet Silverado — Cylinder 4 Glow Plug Incorrect
- P06C8 2016 Chevrolet Silverado — Cylinder 4 Glow Plug Incorrect
- P06C8 2017 Chevrolet Silverado — Cylinder 4 Glow Plug Incorrect
- P06C8 2018 Chevrolet Silverado — Cylinder 4 Glow Plug Incorrect
Frequently Asked Questions about P06C8 Chevrolet Code
1. What are the common symptoms of OBDII code P06C8 for a Chevrolet indicating Cylinder 4 Glow Plug Incorrect?
- Common symptoms include rough idling, decreased fuel efficiency, and possible engine misfires.
2. What are the possible causes of OBDII code P06C8 on a Chevrolet related to Cylinder 4 Glow Plug Incorrect?
- Possible causes may include a faulty glow plug in cylinder 4, wiring issues, or a problem with the glow plug control module.
3. Can a faulty glow plug in cylinder 4 cause the Check Engine light to illuminate with code P06C8 on a Chevrolet?
- Yes, a malfunctioning glow plug in cylinder 4 can trigger the Check Engine light and result in the P06C8 code being stored.
4. How can I diagnose and repair OBDII code P06C8 for a Chevrolet with a Cylinder 4 Glow Plug Incorrect issue?
- Diagnosis typically involves testing the glow plug in cylinder 4, checking the wiring and connections, and verifying the operation of the glow plug control module. Repair may involve replacing the faulty components.
5. Are there any specific repair tips for addressing OBDII code P06C8 on a Chevrolet related to Cylinder 4 Glow Plug Incorrect?
- When replacing glow plugs, it's recommended to replace all glow plugs in the affected bank to ensure uniform performance. Additionally, check for any corrosion or damage to the wiring harness.
6. Can a DIY enthusiast address OBDII code P06C8 for a Chevrolet with a Cylinder 4 Glow Plug Incorrect issue?
- While some may feel comfortable diagnosing and replacing glow plugs, dealing with electrical components like the glow plug control module may require advanced knowledge and tools, making professional assistance advisable.
7. Is it safe to continue driving a Chevrolet with OBDII code P06C8 indicating Cylinder 4 Glow Plug Incorrect?
- It's generally not recommended to drive the vehicle with this issue as it can lead to performance problems and potentially cause further damage to the engine components.
8. How crucial is it to address OBDII code P06C8 on a Chevrolet related to Cylinder 4 Glow Plug Incorrect promptly?
- It's important to address this issue promptly to prevent potential engine damage and restore optimal performance and fuel efficiency to the vehicle.
9. Can environmental factors or extreme temperatures contribute to triggering OBDII code P06C8 for a Chevrolet with a Cylinder 4 Glow Plug Incorrect issue?
- Yes, extreme cold temperatures can put additional strain on glow plugs, potentially leading to malfunctions and triggering the P06C8 trouble code.
10. What should I do if OBDII code P06C8 persists on my Chevrolet even after attempting repairs related to Cylinder 4 Glow Plug Incorrect?
- If the issue persists after repairs, it's advisable to seek professional assistance to perform a more in-depth diagnosis and ensure all potential causes are addressed effectively.
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