P0674 2014 Chevrolet Silverado Code - Cylinder 4 Glow Plug Circuit Fault
Quick Answer
The P0674 diagnostic trouble code (DTC) specifically refers to a fault in the cylinder 4 glow plug circuit in a 2014 Chevrolet Silverado. Common causes include Faulty glow plug in cylinder 4, Damaged wiring or connections in the glow plug circuit, Malfunctioning glow plug relay or 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 2014 Chevrolet Silverado indicates Cylinder 4 Glow Plug Circuit Fault.
- Common causes
- Common causes include Faulty glow plug in cylinder 4, Damaged wiring or connections in the glow plug circuit, Malfunctioning glow plug relay or 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 2014 Chevrolet Silverado Description
The P0674 diagnostic trouble code (DTC) specifically refers to a fault in the cylinder 4 glow plug circuit in a 2014 Chevrolet Silverado. Glow plugs are essential components in diesel engines that assist in starting the engine by heating the air within the combustion chamber. Each cylinder in a diesel engine typically has its own glow plug, which helps ensure proper ignition and combustion of the fuel. When the engine is cold, the glow plugs heat up to aid in starting the vehicle.
Common Causes of P0674 2014 Chevrolet Silverado
- Faulty glow plug in cylinder 4.
- Damaged wiring or connections in the glow plug circuit.
- Malfunctioning glow plug relay or control module.
- Corrosion or poor contact in the circuit.
- Electrical issues such as short circuits or open circuits.
Symptoms of P0674 2014 Chevrolet Silverado
- Difficulty starting the engine, especially in cold weather.
- Rough idling or misfiring of the engine.
- Decreased fuel efficiency.
- Increased emissions.
- Illumination of the check engine light on the dashboard.
How to Fix P0674 2014 Chevrolet Silverado
- Perform a diagnostic scan to confirm the P0674 code and pinpoint the exact cause.
- Inspect the glow plug in cylinder 4 for any signs of damage or malfunction.
- Check the wiring and connections in the glow plug circuit for corrosion, breaks, or poor contact.
- Test the glow plug relay or control module to ensure proper functioning.
- Replace any faulty components identified during the diagnostic process and clear the DTC from the vehicle's computer.
Cost to Fix P0674 2014 Chevrolet Silverado
The typical repair cost for addressing a cylinder 4 glow plug circuit fault in a 2014 Chevrolet Silverado can vary depending on the extent of the issue and the specific parts that need replacement. On average, the repair costs for this type of problem can range from $150 to $300 for parts and labor. However, it's important to note that diagnosis time and labor rates at auto repair shops can fluctuate based on location, vehicle make and model, and engine type. It's recommended to inquire about local rates to get a more accurate estimate for this repair.
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Frequently Asked Questions about P0674 2014 Chevrolet Silverado Code
1. What does the OBDII code P0674 mean for a 2014 Chevrolet Silverado?
P0674 indicates a fault in the glow plug circuit for cylinder 4, meaning the glow plug or its wiring may not be functioning properly.
2. What are the symptoms of code P0674 on a 2014 Chevrolet Silverado?
Symptoms may include difficulty starting the engine in cold weather, rough idling, decreased fuel efficiency, or an illuminated check engine light.
3. What causes the P0674 code in a 2014 Chevrolet Silverado?
Common causes include a faulty glow plug, damaged glow plug wiring, a defective glow plug control module, or corroded electrical connections.
4. How do you diagnose the P0674 code on a 2014 Chevrolet Silverado?
A mechanic will typically use a scan tool to confirm the code, inspect the glow plug and wiring for damage, and test the glow plug resistance and control module functionality.
5. Can you drive with the P0674 code on a 2014 Chevrolet Silverado?
While the truck may still be drivable, ignoring the issue could lead to harder cold starts and potential further damage to the glow plug system.
6. How do you fix the P0674 code on a 2014 Chevrolet Silverado?
Repairs may include replacing the faulty glow plug, repairing damaged wiring, cleaning corroded connectors, or replacing the glow plug control module.
7. How much does it cost to fix the P0674 code on a 2014 Chevrolet Silverado?
Repair costs vary, but replacing a glow plug typically ranges from $50 to $150 for parts and labor, while control module repairs may be more expensive.
8. What tools are needed to fix the P0674 code on a 2014 Chevrolet Silverado?
Basic tools include a digital multimeter to test resistance, a socket set for glow plug removal, and possibly a scan tool for diagnostics.
9. How can you prevent the P0674 code from reoccurring on a 2014 Chevrolet Silverado?
Regular maintenance, such as inspecting the glow plug system and keeping electrical connections clean, can help prevent this code from reappearing.
10. Is the P0674 code specific to cylinder 4 on a 2014 Chevrolet Silverado?
Yes, the code specifically identifies a fault in the glow plug circuit for cylinder 4. Other cylinders would trigger different P067X codes.
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