What is OBD-II Code P067C – Cylinder 5 Glow Plug Control Circuit Low
When your vehicle’s check engine light comes on, it can be a stressful and worrying experience. After all, you may not be fully aware of what the code means and how to repair the issue. One such code that you may come across is OBD-II Code P067C – Cylinder 5 Glow Plug Control Circuit Low. In this article, we will examine what this code means and how to repair it.
Cylinder 5 Glow Plug Control Circuit Low – What does it mean?
If your vehicle has diesel fuel instead of petrol, it will have glow plugs instead of spark plugs. The diesel engine relies on compression rather than a spark to ignite fuel, and hence the glow plug heats up the air in the cylinder during cold weather. This code relates to the fifth cylinder on your vehicle, and it indicates that there is an issue with the glow plug control circuit.
When you start your vehicle, the glow plugs heat up to create the necessary temperature inside the cylinder for combustion. However, if a glow plug fails, it can cause the check engine light to illuminate. Additionally, if the control circuit that powers the glow plugs fails to operate, you will receive the P067C OBD-II code.
Symptoms of P067C Code
There are notable symptoms that you may experience in your vehicle when this code appears. These symptoms include:
1. Difficulty Starting: One of the most common symptoms of P067C code is difficulty starting your engine. When the glow plug control circuit fails, the engine may take time to start.
2. Rough Idling: A poorly functioning glow plug can cause your engine to idle roughly or vibrate excessively.
3. Power Loss: Power loss is another typical symptom that a poorly performing glow plug can cause. Your vehicle may experience a drop in power, which can result in stalling or poor acceleration.
4. Decreased Fuel Economy: When the engine is not running efficiently, it can affect your fuel economy negatively. So you may notice a decrease in fuel economy when this code appears.
Causes of P067C Code
1. Failed Glow Plug: Glow plugs can fail due to many underlying issues, like usage and old or worn out plugs.
2. Wiring Fault: Faulty wiring can disrupt the power supply, which can trigger the P067C code.
3. A bad plug: A faulty or damaged plug can cause voltage to drop, which can cause the code to appear.
4. Control Circuit Malfunction: A malfunctioning glow plug control module or module wiring could also trigger this code.
5. Failed PCM: In rare cases, an issue in the powertrain control module (PCM) can cause P067C code.
Repairing P067C Code
To repair OBD-II Code P067C Cylinder 5 Glow Plug Control Circuit Low, it’s essential to consult with a professional mechanic to diagnose the issue accurately. Several issues could trigger this error code, and it can be a tedious task to identify them. Also, several components need to be checked when troubleshooting the error code, such as the glow plug itself, the glow plug control module, and the wiring harness and connectors.
To repair P067C code, the following steps will be necessary:
1. Diagnostic Test: The mechanic will begin by performing a full diagnostic test using specialized equipment to identify the root cause of the problem.
2. Glow Plug Inspection: They will inspect the glow plug, control module, wiring, and connector for any damage or malfunction.
3. Replacement of faulty parts: If the mechanic detects a problem with the components, they will recommend repairing or replacing the faulty parts.
4. Reprogramming: In rare cases, your PCM may require reprogramming or replacement.
Frequently Asked Questions (FAQs) Regarding P067C Code
1. How much time does it take to diagnose and repair P067C code?
Diagnosing and repairing P067C code depends on the severity of the issue, type of vehicle, and extent of damage. It could take between an hour to several hours to diagnose and repair the code.
2. Can P067C Code cause permanent damage to the engine?
P067C code won’t necessarily cause permanent engine damage as it relates to the glow plug control circuit. It will typically make the engine difficult to start, idle poorly, lose power, or decrease fuel economy.
3. Can a damaged glow plug lead to other engine problems?
A damaged glow plug could lead to other problems such as a drop in power, increased fuel consumption, stalling, or rough idling.
4. Can I drive my vehicle with P067C Code on?
It’s advisable not to drive your vehicle with P067C code illuminated. A poorly performing glow plug can affect the engine’s performance, particularly in colder weather. It’s best to have it inspected and repaired as soon as possible.
5. Can I repair P067C Code myself?
OBD-II codes can be challenging to diagnose and repair, particularly for an inexperienced person. It’s advisable to have a professional mechanic diagnose and repair the code to prevent further damage to your vehicle.
Conclusion
OBD-II Code P067C Cylinder 5 Glow Plug Control Circuit Low can be a worrying experience for vehicle owners. However, understanding what the code means, its causes, and accompanying symptoms can help vehicle owners diagnose the problem accurately, saving them time and money. If you experience difficulty starting your engine, rough idling or decreased fuel economy, it’s best to have your vehicle inspected by a professional mechanic. Remember to always consult with a trained mechanic before conducting any repairs on your own.
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