AutoCodes – Dodge – P0674 Dodge

P0674 Dodge Code - Cylinder 4 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 #4 Glow Plug, Cylinder #4 Glow Plug harness is open or shorted, Cylinder #4 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
P0674 Dodge indicates Cylinder 4 Glow Plug Circuit Fault.
Common causes
Common causes include Faulty Cylinder #4 Glow Plug, Cylinder #4 Glow Plug harness is open or shorted, Cylinder #4 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 4,520
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jul 13, 2021
πŸ’¬ Need more help? Ask Coddy for instant answers β€” it's free!

Code P0674 Dodge 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 #4 glow plug circuit.
OBDII Code P0674 Dodge - Cylinder 4 Glow Plug Circuit Fault - AutoCodes.com
P0674 Dodge Code - Cylinder 4 Glow Plug Circuit Fault

What are the Possible Causes of the DTC P0674 Dodge?

  • Faulty Cylinder #4 Glow Plug
  • Cylinder #4 Glow Plug harness is open or shorted
  • Cylinder #4 Glow Plug circuit poor electrical connection
  • Faulty Glow Plug Module

How to Fix the DTC P0674 Dodge?

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 P0674 Dodge 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 P0674 Dodge code?

Need more information on how to fix the P0674 Dodge code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0674 Dodge code diagnosed by a professional: Find a repair shop in your area

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 P0674 Dodge Code

1. What are the common symptoms of OBDII code P0674 for a Dodge, indicating a Cylinder 4 Glow Plug Circuit Fault?

- Common symptoms include hard starting, rough idling, decreased engine performance, and the illumination of the Check Engine Light.

2. What are the possible causes of OBDII code P0674 in a Dodge, signaling a fault in the Cylinder 4 Glow Plug Circuit?

- Possible causes include a faulty glow plug in cylinder 4, damaged wiring or connectors in the glow plug circuit, or a malfunctioning glow plug control module.

3. How can I diagnose the Cylinder 4 Glow Plug Circuit Fault indicated by OBDII code P0674 in my Dodge?

- Diagnose the issue by checking the glow plug in cylinder 4 for continuity, inspecting the wiring and connectors for damage, and testing the glow plug control module for proper function.

4. Can driving with OBDII code P0674, signaling a Cylinder 4 Glow Plug Circuit Fault in a Dodge, cause further damage?

- Continuing to drive with this fault can potentially lead to issues like incomplete combustion, reduced fuel efficiency, and damage to the engine over time.

5. What is the recommended repair approach for addressing OBDII code P0674 in a Dodge related to a Cylinder 4 Glow Plug Circuit Fault?

- The recommended repair involves replacing the faulty glow plug in cylinder 4, repairing any damaged wiring or connectors, and, if necessary, replacing the glow plug control module.

6. Are there any tips to prevent OBDII code P0674 from reoccurring in a Dodge after repairing the Cylinder 4 Glow Plug Circuit Fault?

- To prevent code P0674 from reoccurring, ensure all glow plugs are in good condition, regularly inspect the glow plug circuit for any issues, and follow the manufacturer's maintenance recommendations.

7. Can a DIY enthusiast repair OBDII code P0674 related to a Cylinder 4 Glow Plug Circuit Fault in a Dodge?

- While some DIY enthusiasts may be able to replace glow plugs or check wiring, diagnosing and repairing complex electrical issues like this one may require professional expertise to ensure accurate repairs.

8. How important is it to address OBDII code P0674 signaling a Cylinder 4 Glow Plug Circuit Fault in a timely manner for a Dodge?

- It is crucial to address this issue promptly to avoid potential engine damage, poor performance, and reduced fuel efficiency due to incomplete combustion caused by the faulty glow plug circuit.

9. Is it safe to drive my Dodge with OBDII code P0674 active, indicating a Cylinder 4 Glow Plug Circuit Fault?

- While it may be possible to drive the vehicle with this code, it is recommended to address the issue promptly to prevent further damage and ensure optimal engine performance and efficiency.

10. Can extreme weather conditions affect the performance of the glow plug circuit, potentially triggering OBDII code P0674 in a Dodge?

- Yes, extreme cold temperatures can strain the glow plug circuit, leading to faults and triggering code P0674. It is essential to ensure the glow plug system is in good condition, especially in cold climates.

Discuss the causes and fixes for P0674 Dodge OBDII Code

Code P0674 Dodge comments

No comments found for this page.

AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play