P0672 2014 Chevrolet Silverado Code - Cylinder 2 Glow Plug Circuit Fault
Quick Answer
n the diesel engine, air alone is compressed in the cylinder. Common causes include Faulty cylinder #2 glow plug, Cylinder #2 glow plug harness is open or shorted, Cylinder #2 glow plug circuit poor electrical connection. 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
- P0672 2014 Chevrolet Silverado indicates Cylinder 2 Glow Plug Circuit Fault.
- Common causes
- Common causes include Faulty cylinder #2 glow plug, Cylinder #2 glow plug harness is open or shorted, Cylinder #2 glow plug circuit poor electrical connection.
- 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.
Code P0672 2014 Chevrolet Silverado Description
Control of the glow plugs is accomplished by the Glow Plug Control Module. The nominal voltage for the glow plugs is 5.4 volts. When the ignition is turned On, the Glow Plug Control Module applies 7.2 V for 2.2 s, then 5.7 V for 0.8 s, and then 5.4 V until 1200°C (2192°F) is reached. The maximum voltage of the system is 10 V. While the engine is running the voltage will vary between 4.7 - 10 V when in closed loop control to maintain a glow plug temperature that ranges from 1150° - 1180°C (2102° - 2156°F). The temperature and the power consumption are controlled between the Engine Control Module (ECM) and the Glow Plug Control Module within a wide range to suit the engine's pre-heating requirements. Each glow plug is energized individually. This capability yields more optimum heat times for the glow plugs, thus pre - glow times can be kept to a minimum for a short wait to crank times and maximum glow plug durability.
What are the Possible Causes of the DTC P0672 2014 Chevrolet Silverado?
- Faulty cylinder #2 glow plug
- Cylinder #2 glow plug harness is open or shorted
- Cylinder #2 glow plug circuit poor electrical connection
- Faulty Glow Plug Control Module (GPCM)
How to Fix the DTC P0672 2014 Chevrolet Silverado?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0672 2014 Chevrolet Silverado code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P0672 2014 Chevrolet Silverado Code
1. What does the OBDII code P0672 mean on a 2014 Chevrolet Silverado?
P0672 indicates a fault in the glow plug circuit for cylinder 2, which may affect the engine's ability to start or run properly in cold conditions.
2. What are the common symptoms of code P0672 in a 2014 Chevrolet Silverado?
Common symptoms include difficulty starting in cold weather, rough idling, reduced fuel efficiency, and an illuminated check engine light.
3. What causes the P0672 code to appear in my Silverado?
The code could be caused by a faulty glow plug, damaged wiring or connectors in the glow plug circuit, a failed glow plug control module, or corrosion in electrical components.
4. Can I drive my 2014 Chevrolet Silverado with a P0672 code?
Yes, you can drive the vehicle, but it may struggle to start in cold weather and could experience reduced performance. Prolonged driving without repairs may lead to further engine issues.
5. How do I diagnose the P0672 code on my Silverado?
Start by inspecting the glow plug for cylinder 2, checking the wiring and connectors for damage or corrosion, and testing the glow plug with a multimeter for proper resistance.
6. How do I fix the P0672 code in a 2014 Chevrolet Silverado?
Repairs may include replacing the faulty glow plug for cylinder 2, repairing or replacing damaged wiring, cleaning corroded connectors, or replacing the glow plug control module if necessary.
7. How much does it cost to repair the P0672 code in a Silverado?
The cost can vary depending on the repair. Replacing a glow plug typically costs between $50 and $150 for parts and labor, while more extensive electrical repairs may cost more.
8. Can a faulty glow plug on cylinder 2 cause long-term damage?
If left unrepaired, a faulty glow plug can lead to poor combustion, increased emissions, and potential damage to other engine components over time.
9. How do I prevent the P0672 code from recurring?
Regularly inspect and maintain the glow plug system, clean electrical connectors, and address any signs of wear or corrosion in the wiring.
10. Does the P0672 code always mean the glow plug is bad?
No, the issue could also stem from damaged wiring, a faulty glow plug control module, or poor electrical connections rather than the glow plug itself. Proper diagnosis is essential.
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