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 the part of the car that helps warm up the engine when it's cold isn't working right for cylinder number 5.
The P0675 code indicates that the engine control module (ECM) has detected a problem with the glow plug circuit for cylinder 5. This could mean the circuit is open or not functioning properly.
Glow plugs are used in diesel engines to heat the air in the cylinders to ensure efficient combustion, especially in cold conditions. The P0675 code is triggered when the ECM detects an open circuit or a fault in the glow plug circuit for cylinder 5. This could be due to a faulty glow plug, wiring issues, or a problem with the glow plug control module.
• Difficulty starting the engine in cold weather
• Engine misfires or runs rough
• Check engine light illuminated
• Faulty glow plug in cylinder 5
• Damaged wiring or connectors in the glow plug circuit
• Faulty glow plug control module
Glow Plug: A device used to heat the air in diesel engine cylinders to aid in starting the engine.
ECM: Engine Control Module, the computer that manages engine functions.
• Use a scan tool to verify the presence of the P0675 code.
• Inspect the glow plug and its wiring for cylinder 5 for damage or disconnection.
• Test the glow plug for proper resistance and functionality.
• Replace the faulty glow plug in cylinder 5.
• Repair or replace damaged wiring or connectors.
• Replace the glow plug control module if necessary.
• OBD-II scan tool
• Multimeter
• Socket set
$100 - $300
Moderate
• Ford F-250
• Chevrolet Silverado
• Dodge Ram
• Regularly inspect glow plugs and wiring for damage.
• Ensure proper maintenance of the glow plug control module.
• Use high-quality diesel fuel to prevent buildup.
Sensor Issue
• If you experience hard starting in cold weather, have your vehicle inspected.
• Regular maintenance can prevent glow plug issues.
Glow plugs may be covered under powertrain warranty. Check with your manufacturer.
Glow plug issues are common in diesel engines, especially in colder climates.
Moderate – While the vehicle may still run, it can lead to starting issues and increased emissions.
Ignoring this code can lead to increased emissions and potential engine damage.
• Engine cold start
• Ambient temperature below 32°F
The glow plug for cylinder 5 is located on the engine block, typically accessible from the top of the engine.
Q: Can I drive with a P0675 code?
A: While you can drive with this code, it is advisable to fix it soon to avoid starting issues and increased emissions.
Q: How do I know if a glow plug is bad?
A: Symptoms of a bad glow plug include hard starting, rough idling, and the check engine light being on.
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Fitment Required · Vehicle-fitment part
Commonly relevant for misfire, ignition-efficiency, and some drivability-related repairs.
Misfire and ignition-related faults commonly involve spark plugs as part of the repair path.
Check the correct plug type, gap, and engine application for your vehicle.
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Fitment Required · Vehicle-fitment part
Relevant when the fault points toward ignition-coil performance or cylinder-specific ignition issues.
Some ignition faults involve coil performance or cylinder-specific coil problems.
Match the coil to your engine and confirm the failed component before ordering.
View options on AmazonThese parts may be related to this fault category, but a code by itself does not confirm exact fitment or guarantee that replacing a part will solve the problem.