The P067F: Cylinder 6 Glow Plug Control Circuit High code indicates that the control module has detected higher-than-expected voltage in the glow plug control circuit for cylinder 6. This issue can prevent the glow plug from functioning correctly, potentially causing hard starts, especially in cold weather, and can lead to damage if left unaddressed. High voltage could be caused by a faulty glow plug, wiring problems, or a control circuit malfunction.
P067F – Quick Overview
| Code | Information |
|---|---|
| Meaning | P067F: Cylinder 6 Glow Plug Control Circuit High |
| Is it serious? | Yes, as high voltage can damage the glow plug and lead to engine starting issues. |
| Possible causes | – High voltage in the cylinder 6 glow plug control circuit – Faulty glow plug – Wiring issue |
| How to diagnose? | – Test cylinder 6 glow plug control circuit for voltage – Inspect wiring and connectors – Replace glow plug if necessary |
P067F Meaning
The P067F code indicates that the voltage in the glow plug control circuit for cylinder 6 is higher than expected. High voltage can damage the glow plug or prevent it from heating properly, which can lead to poor engine performance and starting issues, especially in cold weather.
Step-by-step diagnostic guide
| Action | Description | Tools Needed |
|---|---|---|
| Check for Other Codes | Use an OBD-II scanner to check for additional related codes, especially those affecting the glow plug system or electrical faults. | OBD-II Scanner |
| Test the Cylinder 6 Glow Plug Control Circuit for Voltage | Use a multimeter to measure the voltage in the glow plug control circuit for cylinder 6. Compare the readings to the manufacturer’s specifications to ensure the voltage is within range. | Multimeter |
| Inspect Wiring and Connectors | Inspect the wiring and connectors leading to cylinder 6’s glow plug for any signs of damage, loose connections, or corrosion that could cause a high voltage condition. | Flashlight, Multimeter |
| Test the Glow Plug for Cylinder 6 | Test the glow plug in cylinder 6 to ensure it is not damaged by excessive voltage and is operating properly. Replace the glow plug if necessary. | Diagnostic Tool, Multimeter |
| Replace the Glow Plug if Necessary | If the glow plug for cylinder 6 is faulty or damaged due to high voltage, replace it to restore proper engine starting performance, especially in cold weather. | Replacement Glow Plug, Tools |
| Clear the Code and Test | After repairs, clear the code using an OBD-II scanner and test the vehicle to ensure that the cylinder 6 glow plug control circuit is functioning correctly. | OBD-II Scanner, Vehicle Manual |
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I test OBD-II scanners and make DIY Engine diagnostics guides to help you solve your car problems without having to depend on the mechanic. A lot of them will try to scam you or are just no help at all. About Juraj Lukacko