P0671 2014 GMC Sierra Code - Cylinder 1 Glow Plug Circuit Fault
Quick Answer
The diagnostic trouble code P0671 for a 2014 GMC Sierra indicates a fault in the glow plug circuit of cylinder 1. Common causes include Faulty glow plug in cylinder 1, Wiring or connection issues in the glow plug circuit, Failed glow plug relay. 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
- P0671 2014 GMC Sierra indicates Cylinder 1 Glow Plug Circuit Fault.
- Common causes
- Common causes include Faulty glow plug in cylinder 1, Wiring or connection issues in the glow plug circuit, Failed glow plug relay.
- 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.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code P0671 2014 GMC Sierra Description
The diagnostic trouble code P0671 for a 2014 GMC Sierra indicates a fault in the glow plug circuit of cylinder 1. Glow plugs are essential components in diesel engines that preheat the combustion chamber to facilitate cold starts. When this code is triggered, it means that there is an issue with the glow plug circuit specifically for cylinder 1. This can lead to difficulties starting the engine, decreased fuel efficiency, rough idling, and increased emissions. If left unaddressed, it can potentially cause damage to the engine due to incomplete combustion.
Common Causes of P0671 2014 GMC Sierra
- Faulty glow plug in cylinder 1
- Wiring or connection issues in the glow plug circuit
- Failed glow plug relay
- Faulty engine control module (ECM)
- Corrosion or damage to the glow plug circuit components
Symptoms of P0671 2014 GMC Sierra
- Difficulty starting the engine, especially in cold weather
- Rough idling or misfiring
- Decreased fuel efficiency
- Illumination of the check engine light
- Increased emissions
How to Fix P0671 2014 GMC Sierra
- Diagnose the issue by using a multimeter to test the resistance of the glow plug in cylinder 1.
- Inspect the wiring and connections in the glow plug circuit for any damage or corrosion.
- Test the glow plug relay for proper functioning or replace it if necessary.
- If the glow plug itself is faulty, remove and replace it with a new one.
- Clear the trouble code from the ECM and test the vehicle to ensure the issue has been resolved.
Cost to Fix P0671 2014 GMC Sierra
The cost of repairing a cylinder 1 glow plug circuit fault can vary depending on the specific cause of the issue. On average, the parts required for this repair, such as a glow plug or relay, can range from $50 to $150. Additionally, labor costs can add another $100 to $200 to the total repair bill. Overall, the total cost of addressing this code may fall between $150 and $350. It's important to note that prices can fluctuate based on location, vehicle model, and the specific repair shop rates. It's recommended to obtain a detailed quote from a trusted mechanic before proceeding with the repair.
Need more information about the P0671 2014 GMC Sierra code?
Need more information on how to fix the P0671 2014 GMC Sierra code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P0671 2014 GMC Sierra code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P0671 2014 GMC Sierra Code
What does the OBDII code P0671 mean on a 2014 GMC Sierra?
Code P0671 indicates a fault in the glow plug circuit for cylinder 1, which is responsible for heating the cylinder for proper combustion in cold conditions.
What are common symptoms of P0671 in a 2014 GMC Sierra?
Symptoms can include difficulty starting the engine in cold weather, rough idle, reduced fuel efficiency, and the check engine light being illuminated.
What causes P0671 in a 2014 GMC Sierra?
Common causes include a faulty glow plug, damaged glow plug wiring or connectors, a failed glow plug control module, or corrosion in the circuit.
How can I diagnose the P0671 code on my 2014 GMC Sierra?
Start by inspecting the glow plug for cylinder 1, checking the wiring and connectors for damage or corrosion, and testing the glow plug control module for proper operation.
Can I drive my 2014 GMC Sierra with the P0671 code?
While driving with P0671 is possible, it may lead to starting issues and reduced engine performance, especially in cold weather. Prompt repair is recommended.
How do I fix the P0671 code on a 2014 GMC Sierra?
Repairs can include replacing the faulty glow plug, repairing or replacing damaged wiring, cleaning corroded connections, or replacing the glow plug control module if defective.
How much does it cost to fix the P0671 code on a 2014 GMC Sierra?
The cost can vary depending on the exact issue. Glow plug replacement typically costs $50-$150 per plug, while glow plug control module replacement can range from $300-$600.
Can a faulty glow plug cause other issues in my 2014 GMC Sierra?
Yes, a faulty glow plug may lead to increased emissions, poor engine performance, and difficulty starting, especially in colder climates.
What tools are needed to fix P0671 on a 2014 GMC Sierra?
You may need a multimeter to test electrical components, basic hand tools for removing and replacing parts, and possibly a diagnostic scanner to clear the code after repairs.
How can I prevent the P0671 code from recurring in my 2014 GMC Sierra?
Regular maintenance, including inspecting glow plugs and wiring for corrosion or damage, and using high-quality replacement parts can help prevent recurring issues.
Discuss the causes and fixes for P0671 2014 GMC Sierra OBDII Code
Code P0671 2014 GMC Sierra 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.