AutoCodes – Jeep – P0672 Jeep

P0672 Jeep Code - Cylinder 2 Glow Plug Circuit Fault

Quick Answer

The glow plug system is used to assist in providing the heat required to begin combustion during cold engine temperatures. 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 Jeep 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.

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Code Popularity 1,361

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 13, 2021

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0672 Jeep Description

The glow plug system is used to assist in providing the heat required to begin combustion during cold engine temperatures. The glow plugs are heated before and during cranking, as well as initial engine operation. The Engine Control Module (ECM) controls the glow plug ON times by monitoring coolant temperature and glow plug voltage. The glow plug system has individual glow plug supply circuits between the controller and the glow plugs. If the feedback voltage from the controller to the ECM is not within range, the ECM sets the OBDII code. The Diagnostic Trouble Code (DTC) will set if the Engine Control Module has detected a fault in the cylinder #2 glow plug circuit.

OBDII Code P0672 Jeep - Cylinder 2 Glow Plug Circuit Fault - AutoCodes.com — P0672 Jeep Code - Cylinder 2 Glow Plug Circuit Fault

What does this mean?

What are the Possible Causes of the DTC P0672 Jeep?

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 Module

How to Fix the DTC P0672 Jeep?

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 Jeep 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 Jeep code?

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Need Help with the Code?

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0672 Jeep Code

1. What are the common symptoms of OBDII code P0672 on a Jeep related to the Cylinder 2 Glow Plug Circuit Fault?

- Common symptoms include hard starting, rough idling, loss of power, and increased emissions.

2. What are the possible causes of the Cylinder 2 Glow Plug Circuit Fault (P0672) in a Jeep?

- The fault may be caused by a defective glow plug, faulty wiring or connections, a bad glow plug control module, or a malfunctioning PCM.

3. How can I diagnose the Cylinder 2 Glow Plug Circuit Fault on my Jeep?

- You can use a multimeter to test the resistance of the glow plug, check the wiring for continuity, and inspect the connections for any signs of corrosion or damage.

4. What is the recommended repair for OBDII code P0672 on a Jeep indicating an issue with the Cylinder 2 Glow Plug Circuit Fault?

- The repair typically involves replacing the faulty glow plug, repairing any damaged wiring or connections, or replacing the glow plug control module if necessary.

5. Can I still drive my Jeep with OBDII code P0672 related to the Cylinder 2 Glow Plug Circuit Fault?

- It is not recommended to drive the vehicle with a glow plug circuit fault as it can lead to poor engine performance and potential damage to other components.

6. How important is it to address the Cylinder 2 Glow Plug Circuit Fault on a Jeep promptly?

- It is crucial to address the issue promptly to ensure proper starting, smooth engine operation, and to prevent further damage to the engine.

7. Are there any preventive maintenance tips to avoid encountering OBDII code P0672 on a Jeep?

- Regularly inspecting and testing the glow plugs, wiring, and connections can help prevent issues with the glow plug circuit.

8. Can extreme weather conditions affect the Cylinder 2 Glow Plug Circuit Fault in a Jeep?

- Yes, extreme cold or hot weather can put additional stress on the glow plug circuit, potentially leading to failures or faults.

9. How long does it typically take to repair the Cylinder 2 Glow Plug Circuit Fault on a Jeep?

- The repair time can vary depending on the exact cause of the fault, but it usually takes a few hours to diagnose and fix the issue.

10. Is it possible for DIY enthusiasts to address the Cylinder 2 Glow Plug Circuit Fault themselves?

- DIY enthusiasts with the necessary tools and knowledge of automotive electrical systems can attempt to diagnose and repair the glow plug circuit fault, but professional assistance is recommended for accurate diagnosis and proper repair.