P0357 2017 GMC Sierra Code - Ignition Coil 7 Control Circuit
Quick Answer
The diagnostic trouble code P0357 for a 2017 GMC Sierra refers to an issue with the ignition coil 7 control circuit. Common causes include Faulty ignition coil 7, Damaged or corroded wiring to the ignition coil, Loose or faulty connectors. 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 2017 GMC Sierra indicates Ignition Coil 7 Control Circuit.
- Common causes
- Common causes include Faulty ignition coil 7, Damaged or corroded wiring to the ignition coil, Loose or faulty connectors.
- 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 P0357 2017 GMC Sierra Description
The diagnostic trouble code P0357 for a 2017 GMC Sierra refers to an issue with the ignition coil 7 control circuit. In modern vehicles, the ignition coil plays a crucial role in the ignition system by converting the low voltage from the battery into the high voltage needed to ignite the fuel-air mixture in the engine cylinders. Ignition coil 7 specifically refers to the coil responsible for providing power to the spark plug in the seventh cylinder of the engine.
Common Causes of P0357 2017 GMC Sierra
- Faulty ignition coil 7
- Damaged or corroded wiring to the ignition coil
- Loose or faulty connectors
- Issues with the engine control module (ECM) or powertrain control module (PCM)
- Electrical system malfunctions
Symptoms of P0357 2017 GMC Sierra
- Engine misfires or runs rough
- Difficulty starting the engine
- Reduced power output
- Illuminated check engine light
- Reduced fuel efficiency
How to Fix P0357 2017 GMC Sierra
- Begin by diagnosing the specific cause of the issue using a diagnostic scanner to confirm the P0357 code and identify the faulty component.
- Inspect the wiring and connectors leading to the ignition coil 7 for any signs of damage, corrosion, or loose connections.
- Test the ignition coil 7 using a multimeter to check for proper resistance and continuity.
- If the ignition coil is faulty, replace it with a new one and ensure proper installation.
- Clear the diagnostic trouble codes and test drive the vehicle to confirm that the issue has been resolved.
Cost to Fix P0357 2017 GMC Sierra
The cost of repairing the ignition coil 7 control circuit issue can vary depending on the specific cause of the problem and the cost of parts and labor in your area. On average, replacing an ignition coil can cost between $100 and $300, while diagnosing and repairing wiring or connector issues may range from $150 to $500. Overall, the total repair cost for this issue could range from $200 to $800, including parts and labor. It's important to note that labor rates at auto repair shops can vary, so it's advisable to check with local shops for a more accurate estimate.
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Frequently Asked Questions about P0357 2017 GMC Sierra Code
1. What does the OBDII code P0357 mean on a 2017 GMC Sierra?
P0357 indicates an issue with the Ignition Coil 7 Control Circuit, suggesting a malfunction in the circuit responsible for controlling the ignition coil on cylinder 7.
2. What are the common symptoms of code P0357 in a 2017 GMC Sierra?
Symptoms may include engine misfires, rough idling, reduced power, poor fuel economy, and an illuminated check engine light.
3. What causes the P0357 code in a 2017 GMC Sierra?
Common causes include a faulty ignition coil, damaged wiring or connectors in the control circuit, a defective ignition control module, or a malfunctioning PCM.
4. Can I drive my 2017 GMC Sierra with a P0357 code?
Driving with a P0357 code is not recommended as it can lead to engine misfires, reduced performance, and potential damage to other components like the catalytic converter.
5. How do I diagnose the P0357 code on a 2017 GMC Sierra?
Use a scan tool to confirm the code, visually inspect the ignition coil and wiring for damage, test the ignition coil with a multimeter, and check for proper connection at the coil and PCM.
6. How do I fix the P0357 code on my 2017 GMC Sierra?
Repairs may include replacing the ignition coil for cylinder 7, repairing or replacing damaged wiring or connectors, or reprogramming or replacing the PCM if necessary.
7. How much does it cost to fix a P0357 code on a 2017 GMC Sierra?
The cost can vary, but replacing an ignition coil typically ranges from $50 to $150 for parts and $50 to $100 for labor, depending on your location.
8. Can a bad spark plug cause a P0357 code on a 2017 GMC Sierra?
While a bad spark plug is not the direct cause of P0357, it can contribute to misfires. It's important to check the spark plugs when diagnosing ignition-related issues.
9. Does the P0357 code always mean the ignition coil is bad?
No, the P0357 code could also be caused by wiring issues, a faulty connector, or problems with the PCM or ignition control module.
10. How can I prevent the P0357 code from recurring on my 2017 GMC Sierra?
Regular maintenance, including inspecting and replacing ignition components as needed, ensuring proper wiring connections, and addressing misfires promptly, can help prevent this code from recurring.
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