P0357 2014 GMC Sierra Code - Ignition Coil 7 Control Circuit
Quick Answer
The P0357 diagnostic trouble code (DTC) specifically relates to the ignition coil 7 control circuit in a 2014 GMC Sierra. Common causes include Faulty ignition coil: The ignition coil for cylinder 7 may be defective or failing, Wiring issues: Damaged or corroded wiring in the ignition coil 7 control circuit can disrupt the electrical signal, Poor electrical connection: Loose or poor connections between the ignition coil and the vehicle's wiring harness. 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
- P0357 2014 GMC Sierra indicates Ignition Coil 7 Control Circuit.
- Common causes
- Common causes include Faulty ignition coil: The ignition coil for cylinder 7 may be defective or failing, Wiring issues: Damaged or corroded wiring in the ignition coil 7 control circuit can disrupt the electrical signal, Poor electrical connection: Loose or poor connections between the ignition coil and the vehicle's wiring harness.
- 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 P0357 2014 GMC Sierra Description
The P0357 diagnostic trouble code (DTC) specifically relates to the ignition coil 7 control circuit in a 2014 GMC Sierra. This code indicates a problem with the electrical circuit that controls the ignition coil for cylinder 7. The ignition coil is responsible for converting the low voltage from the battery into the high voltage needed to create a spark in the spark plug, which ignites the air-fuel mixture in the cylinder. When the control circuit for the ignition coil 7 is not functioning properly, it can lead to misfires, rough idling, and overall poor engine performance.
Common Causes of P0357 2014 GMC Sierra
- Faulty ignition coil: The ignition coil for cylinder 7 may be defective or failing.
- Wiring issues: Damaged or corroded wiring in the ignition coil 7 control circuit can disrupt the electrical signal.
- Poor electrical connection: Loose or poor connections between the ignition coil and the vehicle's wiring harness.
- ECM/PCM failure: A malfunction in the Engine Control Module (ECM) or Powertrain Control Module (PCM) can affect the ignition coil control circuit.
- Spark plug issues: Worn or faulty spark plugs can lead to ignition coil problems and trigger this code.
Symptoms of P0357 2014 GMC Sierra
- Rough idling: A noticeable roughness in the engine's idle speed, which may feel like vibrations or shaking.
- Misfires: Cylinder misfires can result in a loss of power, hesitation, or jerking while driving.
- Poor acceleration: Difficulty in accelerating smoothly or a lack of power when pressing the gas pedal.
- Check Engine Light: The illumination of the check engine light on the instrument panel.
- Engine stalling: The engine may stall or shut off unexpectedly while driving, especially at low speeds or idle.
How to Fix P0357 2014 GMC Sierra
- Diagnose the issue: Use a scan tool to confirm the presence of the P0357 code and conduct further testing to pinpoint the exact cause.
- Inspect wiring and connections: Check the wiring harness and connections related to the ignition coil 7 control circuit for any damage, corrosion, or loose connections.
- Test the ignition coil: Verify the functionality of the ignition coil for cylinder 7 using a multimeter or oscilloscope.
- Replace faulty components: If the ignition coil, wiring, or connections are found to be faulty, replace them with new parts.
- Clear the code: After completing the repair, clear the DTC from the vehicle's memory using a scan tool to reset the check engine light.
Cost to Fix P0357 2014 GMC Sierra
The cost of repairing a P0357 code on a 2014 GMC Sierra can vary depending on the specific cause of the issue and the cost of parts and labor in your area. In general, replacing an ignition coil can cost between $50 and $200, while addressing wiring issues or other components may increase the overall repair cost. Additionally, labor rates at auto repair shops typically range from $80 to $150 per hour. It's recommended to consult with a professional mechanic for a more precise estimate based on your vehicle's needs and location.
Need more information about the P0357 2014 GMC Sierra code?
Need more information on how to fix the P0357 2014 GMC Sierra code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P0357 2014 GMC Sierra code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P0357 2014 GMC Sierra Code
No Frequently Asked Questions about P0357 2014 GMC Sierra Code found.
Discuss the causes and fixes for P0357 2014 GMC Sierra OBDII Code
Code P0357 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.