The P0671 code is an OBD-II trouble code that indicates an issue with the glow plug circuit for cylinder one in a diesel engine. This code is related to the proper functioning of the glow plug, which is essential for preheating the cylinder before starting the engine.
What Does the P0671 Code Mean?
The P0671 code signifies that the Engine Control Module (PCM) has detected a malfunction in the glow plug circuit specifically for cylinder one. This could be due to a variety of factors, including a faulty glow plug, wiring issues, or problems with the glow plug control module.
What Causes the P0671 Code?
Several factors can trigger the P0671 code, including:
- Glow plug failure
- Glow plug control module failure
- Wiring harness issues related to the glow plug
What Are the Symptoms of the P0671 Code?
Common symptoms associated with the P0671 code include:
- Engine may not start, particularly in cold weather
- Hard starting in cold temperatures
How Serious Is the P0671 Code?
The P0671 code is considered urgent, as it can lead to significant malfunctions that may cause severe damage to the vehicle or pose safety risks to the driver and passengers. Immediate attention is recommended to avoid further complications.
How to Diagnose the P0671 Code
Proper diagnosis of the P0671 code involves several steps:
- Use an OBD-II scanner to confirm the P0671 code.
- Inspect the glow plug for cylinder one visually.
- Test the glow plug using a multimeter for continuity.
- Check the glow plug control module and wiring for faults.
- Clear the code and see if it reappears after testing.
Common Repairs for the P0671 Code
Repairs for the P0671 code may include:
- Replacing the faulty glow plug
- Repairing or replacing the wiring harness
- Replacing the glow plug control module
How Much Does It Cost to Fix the P0671 Code?
The cost to repair the P0671 code can vary widely depending on the specific issue. Generally, repairs can range from $100 to $500, considering parts and labor. Replacing glow plugs is often on the lower end, while control module replacements can be more expensive.
Can I Fix the P0671 Code Myself?
While some aspects of diagnosing and fixing the P0671 code can be performed by a knowledgeable DIY enthusiast, it is crucial to understand the underlying issues involved. If you are not familiar with automotive electrical systems or diesel engine components, it may be best to consult a professional mechanic to avoid unnecessary repairs.
