Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that something is wrong with the part of the car that helps start the engine when it's cold. It's like when you need to wear a warm coat in winter, but your coat isn't working right.
The P067B code indicates a problem with the electrical circuit that controls the glow plug for cylinder 4. This circuit is reading a higher voltage than expected.
The glow plug control circuit for cylinder 4 is experiencing a higher than normal voltage. This could be due to an electrical fault, such as a short circuit or a problem with the glow plug itself. The glow plug is an essential component in diesel engines, helping to heat the air in the combustion chamber for easier starting in cold conditions.
• Hard starting, especially in cold weather
• Check Engine Light illuminated
• Rough idle when starting
• Faulty glow plug
• Wiring issues such as an open or short circuit
• Faulty glow plug control module
Glow Plug: A heating device used to aid starting diesel engines.
Control Module: An electronic device that manages a specific system in a vehicle.
• Inspect the glow plug for cylinder 4 for damage or wear.
• Check the wiring and connections to the glow plug for continuity and shorts.
• Test the glow plug control module for proper operation.
• Replace the faulty glow plug.
• Repair or replace damaged wiring or connectors.
• Replace the glow plug control module if necessary.
• Multimeter
• Socket set
• Diagnostic scanner
$100 - $300
Moderate
• Ford F-250 Super Duty
• Chevrolet Silverado 2500HD
• Ram 2500
• Regular maintenance checks on glow plugs
• Ensure proper electrical connections
• Use high-quality replacement parts
Sensor Issue
• Have your vehicle inspected by a professional if you notice hard starting.
• Do not ignore the Check Engine Light.
Glow plugs may be covered under the powertrain warranty. Check with your vehicle manufacturer.
Glow plug issues have been common in diesel engines, especially in colder climates, due to their role in starting the engine.
Moderate – It should be addressed soon to avoid starting issues, especially in cold weather.
Driving with a malfunctioning glow plug can lead to increased emissions and potential engine starting issues.
• Engine cold start
• Ambient temperature below 50°F
The glow plug for cylinder 4 is located on the engine cylinder head, typically accessible from the top of the engine.
Q: Can I drive with a P067B code?
A: You can drive, but you may experience starting issues, especially in cold weather. It's best to fix it soon.
Q: How do I know if my glow plug is bad?
A: Symptoms include hard starting, rough idle, and the Check Engine Light being on.
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