P0674 Ford Code - Cylinder 4 Glow Plug Circuit Fault
Quick Answer
The P0674 diagnostic trouble code (DTC) for Ford vehicles indicates a fault in the glow plug circuit of cylinder 4. Common causes include Faulty glow plug in cylinder 4, Damaged wiring or connectors in the glow plug circuit, Malfunctioning glow plug control module. 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
- P0674 Ford indicates Cylinder 4 Glow Plug Circuit Fault.
- Common causes
- Common causes include Faulty glow plug in cylinder 4, Damaged wiring or connectors in the glow plug circuit, Malfunctioning glow plug control module.
- 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.
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Code P0674 Ford Description
The P0674 diagnostic trouble code (DTC) for Ford vehicles indicates a fault in the glow plug circuit of cylinder 4. Glow plugs are used in diesel engines to heat the combustion chamber for easier cold starting. When the engine is started, the glow plugs are activated to warm up the air in the cylinders. In the case of cylinder 4, this particular glow plug circuit is experiencing an issue, which can lead to difficulty starting the engine, rough idling, increased emissions, and reduced fuel efficiency.
Common Causes of P0674 Ford
- Faulty glow plug in cylinder 4.
- Damaged wiring or connectors in the glow plug circuit.
- Malfunctioning glow plug control module.
- Issues with the engine's computer system.
- Corrosion or poor connections in the glow plug circuit.
Symptoms of P0674 Ford
- Difficulty starting the engine, especially in cold weather.
- Rough idling or misfiring of the engine.
- Decreased fuel efficiency.
- Increased exhaust emissions.
- Check Engine Light illuminated on the dashboard.
How to Fix P0674 Ford
- Perform a visual inspection of the glow plug in cylinder 4 and check for any signs of damage or wear.
- Test the glow plug using a multimeter to determine if it is functioning properly.
- Inspect the wiring and connectors in the glow plug circuit for any damage or corrosion, and repair or replace as necessary.
- Test the glow plug control module to ensure it is sending the correct signals to the glow plug.
- Clear the DTC and test the vehicle to ensure the issue has been resolved.
Cost to Fix P0674 Ford
The typical repair costs for a cylinder 4 glow plug circuit fault can range from $100 to $300, depending on the extent of the issue and the specific components that need to be replaced. This estimate includes the cost of parts and labor. However, it's important to note that the actual cost may vary based on the location of the repair shop, the make and model of the vehicle, and the type of engine. It's recommended to consult with a local automotive repair shop for a more accurate estimate. Additionally, diagnosis time and labor rates can vary, with most shops charging between $80 and $150 per hour.
When is the Code Detected?
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Frequently Asked Questions about P0674 Ford Code
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Discuss the causes and fixes for P0674 Ford OBDII Code
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I have a 2011 f 250 6.7 diesel with the codes p0299 turbo/surpercharger under boost, p0674 cyl 4 glow plug circuit, p0208b reductant pump control range. what could but the best place to start to find the primary cause of complete shut down,
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I don't see any relation between the codes, you should start by clearing all the codes and check the code that comes back first. Any other symptoms?
P0299 FORD - Turbo/Supercharger Underboost
Read more: https://www.autocodes.com/p...P208B FORD - Reductant Pump A Control Range/Performance
Read more: https://www.autocodes.com/p...P0674 FORD - Cylinder 4 Glow Plug Circuit Fault
Read more: https://www.autocodes.com/p... -
The truck just died while driving, going about 25-30 mph. The low oil pressure message popped up, then it died. Won't start up. Won't even crank.
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