P0672 2016 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 2016 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 2016 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 2016 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 2016 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 2016 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.
Need more information about the P0672 2016 Chevrolet Silverado code?
Need more information on how to fix the P0672 2016 Chevrolet Silverado code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P0672 2016 Chevrolet Silverado code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P0672 2016 Chevrolet Silverado Code
1. What does code P0672 mean on a 2016 Chevrolet Silverado?
Code P0672 indicates a Cylinder 2 Glow Plug Circuit Fault, meaning the glow plug or its circuit for cylinder 2 is malfunctioning.
2. What are the symptoms of the P0672 code?
Common symptoms include difficulty starting the engine in cold weather, reduced fuel efficiency, a check engine light, and rough idling.
3. What causes the P0672 code to appear?
The most common causes are a faulty glow plug, damaged wiring or connectors in the glow plug circuit, a failed glow plug control module, or corrosion on electrical components.
4. Can I drive my 2016 Silverado with a P0672 code?
Yes, you can drive the vehicle, but it may have starting issues in cold weather and decreased performance. Prolonged driving without addressing the issue could lead to further damage.
5. How do I diagnose the P0672 code?
Start by checking the glow plug for cylinder 2 with a multimeter to verify resistance. Inspect the wiring and connectors for damage or corrosion, and test the glow plug control module for proper operation.
6. How do I fix the P0672 code on my Silverado?
Repairs may include replacing the faulty glow plug, repairing or replacing damaged wiring or connectors, or replacing the glow plug control module if it's defective.
7. How much does it cost to fix the P0672 code?
The cost typically ranges from $100 to $300, depending on whether just the glow plug is replaced or additional repairs, such as wiring fixes or module replacement, are needed.
8. Can a P0672 code cause long-term damage if ignored?
Yes, ignoring this code can lead to harder starts in cold weather, increased wear on the engine, and potential damage to other components like the cylinder or control module.
9. What tools do I need to troubleshoot the P0672 code?
You'll need a diagnostic scanner to read the code, a multimeter to test electrical components, and possibly basic hand tools for accessing the glow plug and wiring.
10. Is the P0672 code specific to cylinder 2?
Yes, this code is specific to the glow plug circuit for cylinder 2. If other cylinders have issues, different P06xx codes will be triggered.
Discuss the causes and fixes for P0672 2016 Chevrolet Silverado OBDII Code
Code P0672 2016 Chevrolet Silverado comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
