P135A 2017 GMC Sierra Code - Ignition Coil Supply Voltage Circuit Bank 1
Quick Answer
The diagnostic trouble code P135A for a 2017 GMC Sierra indicates a problem with the ignition coil supply voltage circuit in bank 1. Common causes include Faulty ignition coil, Damaged wiring or connectors in the ignition coil circuit, Malfunctioning ignition control module. 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
- P135A 2017 GMC Sierra indicates Ignition Coil Supply Voltage Circuit Bank 1.
- Common causes
- Common causes include Faulty ignition coil, Damaged wiring or connectors in the ignition coil circuit, Malfunctioning ignition control module.
- 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 P135A 2017 GMC Sierra Description
The diagnostic trouble code P135A for a 2017 GMC Sierra indicates a problem with the ignition coil supply voltage circuit in bank 1. The ignition coil is a crucial component in the vehicle's 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 code specifically points to an issue with the supply voltage to the ignition coil in the first bank of cylinders.
Common Causes of P135A 2017 GMC Sierra
- Faulty ignition coil
- Damaged wiring or connectors in the ignition coil circuit
- Malfunctioning ignition control module
- Issues with the power supply to the ignition coil
Symptoms of P135A 2017 GMC Sierra
- Engine misfires
- Rough idling
- Poor acceleration
- Decreased fuel efficiency
- Engine stalling
How to Fix P135A 2017 GMC Sierra
- Begin by diagnosing the specific cause of the issue using a diagnostic scanner to pinpoint the exact source of the problem.
- Inspect the ignition coil, wiring, and connectors for any signs of damage or wear. Replace any faulty components as needed.
- Test the ignition control module to ensure it is functioning correctly. Replace if necessary.
- Check the power supply to the ignition coil and address any issues with the power source.
- Clear the diagnostic trouble code from the vehicle's computer and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix P135A 2017 GMC Sierra
The typical repair costs for addressing the ignition coil supply voltage circuit issue can vary depending on the specific cause of the problem and the extent of the repairs needed. On average, the cost of replacing an ignition coil can range from $100 to $300, while addressing wiring or connector issues may add to the total cost. Labor costs can also vary, with rates typically ranging between $80 and $150 per hour. It's recommended to consult with a qualified mechanic or auto repair shop for a more accurate estimate based on the specific circumstances of the vehicle.
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Frequently Asked Questions about P135A 2017 GMC Sierra Code
1. What does the OBDII code P135A mean on a 2017 GMC Sierra?
P135A indicates an issue with the ignition coil supply voltage circuit on Bank 1, which affects the proper operation of the ignition system.
2. What are the common symptoms of the P135A code?
Symptoms may include engine misfires, rough idling, reduced power, poor fuel economy, and the check engine light being illuminated.
3. What causes the P135A code on a 2017 GMC Sierra?
Common causes include a faulty ignition coil, damaged wiring or connectors, a blown fuse, or issues with the powertrain control module (PCM).
4. How do I diagnose the P135A code?
Diagnosis involves inspecting the ignition coil wiring and connectors for damage, checking for blown fuses, testing the ignition coil, and using a multimeter to verify voltage supply.
5. Can I drive my 2017 GMC Sierra with the P135A code?
Driving with this code is not recommended, as it can lead to engine misfires, reduced performance, and potential damage to the catalytic converter.
6. How do I fix the P135A code?
Repairs may include replacing a faulty ignition coil, repairing or replacing damaged wiring or connectors, replacing a blown fuse, or reprogramming the PCM if necessary.
7. How much does it cost to repair the P135A code?
Repair costs vary depending on the cause but typically range from $100 to $300 for parts and labor, depending on whether the ignition coil or wiring needs to be replaced.
8. Is this code specific to Bank 1?
Yes, P135A specifically refers to the ignition coil voltage circuit on Bank 1, which is the side of the engine containing cylinder 1.
9. Can a bad ignition coil cause the P135A code?
Yes, a defective ignition coil is one of the most common causes of the P135A code.
10. How can I prevent the P135A code from recurring?
Regular maintenance, inspecting ignition components for wear, and promptly addressing wiring or electrical issues can help prevent this code from reappearing.
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