P0351 2014 GMC Sierra Code - Ignition Coil 1 Control Circuit
Quick Answer
The diagnostic trouble code P0351 for a 2014 GMC Sierra indicates a problem with the ignition coil 1 control circuit. Common causes include Faulty ignition coil, Wiring issues in the ignition coil 1 control circuit, Malfunctioning Engine Control Module (ECM). 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
- P0351 2014 GMC Sierra indicates Ignition Coil 1 Control Circuit.
- Common causes
- Common causes include Faulty ignition coil, Wiring issues in the ignition coil 1 control circuit, Malfunctioning Engine Control Module (ECM).
- 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 P0351 2014 GMC Sierra Description
The diagnostic trouble code P0351 for a 2014 GMC Sierra indicates a problem with the ignition coil 1 control circuit. The ignition coil is a crucial component of the ignition system, responsible for converting the low voltage from the battery into the high voltage needed to ignite the fuel-air mixture in the engine cylinders. In this case, the control circuit for ignition coil 1 is not functioning properly, which can lead to misfires, rough idling, and overall poor engine performance.
Common Causes of P0351 2014 GMC Sierra
- Faulty ignition coil
- Wiring issues in the ignition coil 1 control circuit
- Malfunctioning Engine Control Module (ECM)
- Defective spark plugs or spark plug wires
- Corrosion or damage to electrical connections
Symptoms of P0351 2014 GMC Sierra
- Engine misfires
- Hesitation during acceleration
- Rough idling
- Decreased fuel efficiency
- Difficulty starting the engine
How to Fix P0351 2014 GMC Sierra
- Diagnose the issue by using a scan tool to confirm the P0351 code and inspecting the ignition coil 1 control circuit for any visible damage.
- Test the ignition coil using a multimeter to determine if it is functioning properly.
- Check the wiring and connections in the ignition coil 1 control circuit for any breaks, corrosion, or loose connections.
- Replace the ignition coil if it is found to be faulty, ensuring that the new coil is compatible with the vehicle's make and model.
- Clear the diagnostic trouble codes from the ECM and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix P0351 2014 GMC Sierra
The typical repair costs for addressing the P0351 code on a 2014 GMC Sierra can range from $150 to $300, including parts and labor. However, it's important to note that specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. Rates in metropolitan areas or at dealerships may be higher, while independent shops often charge less. It's advisable to check local rates for a more precise estimate.
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Frequently Asked Questions about P0351 2014 GMC Sierra Code
What does the OBDII code P0351 mean on a 2014 GMC Sierra?
P0351 indicates an issue with the ignition coil 1 control circuit, meaning the engine control module (ECM) has detected a fault in the electrical circuit for the ignition coil on cylinder 1.
What are the symptoms of code P0351 in a 2014 GMC Sierra?
Symptoms may include engine misfires, rough idling, reduced power, poor fuel economy, and an illuminated check engine light.
What causes the P0351 code to appear in a 2014 GMC Sierra?
Common causes include a faulty ignition coil, damaged or corroded wiring, a malfunctioning ECM, or a bad spark plug.
Can I drive my 2014 GMC Sierra with the P0351 code?
Driving with this code is not recommended, as it can cause further damage to the engine or catalytic converter due to unburnt fuel from misfires.
How do I diagnose the P0351 code on my GMC Sierra?
Inspect the ignition coil and wiring for damage or corrosion, test the ignition coil with a multimeter, and check the spark plug for wear or fouling.
How do I fix the P0351 code in a 2014 GMC Sierra?
Repairs may include replacing the faulty ignition coil, repairing or replacing damaged wiring, replacing a bad spark plug, or in rare cases, replacing the ECM.
What tools are needed to troubleshoot the P0351 code?
You'll need an OBDII scanner, a multimeter, and basic hand tools to inspect wiring and replace components.
How much does it cost to fix the P0351 code on a 2014 GMC Sierra?
Repair costs can vary, typically ranging from $50 to $200 for parts like an ignition coil or spark plug, plus labor if a mechanic is involved.
Can a bad spark plug cause the P0351 code?
Yes, a worn or fouled spark plug can cause ignition coil issues, triggering the P0351 code.
What happens if I ignore the P0351 code on my GMC Sierra?
Ignoring this code can lead to ongoing misfires, reduced engine performance, and potential damage to the catalytic converter.
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