P135A 2014 Chevrolet Silverado Code - Ignition Coil Supply Voltage Circuit Bank 1
Quick Answer
The P135A code for a 2014 Chevrolet Silverado indicates a problem with the ignition coil supply voltage circuit in bank 1. Common causes include Faulty ignition coil in bank 1, Wiring or connection issues in the ignition coil supply voltage circuit, Defective spark plugs. 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 2014 Chevrolet Silverado indicates Ignition Coil Supply Voltage Circuit Bank 1.
- Common causes
- Common causes include Faulty ignition coil in bank 1, Wiring or connection issues in the ignition coil supply voltage circuit, Defective spark plugs.
- 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 2014 Chevrolet Silverado Description
The P135A code for a 2014 Chevrolet Silverado indicates a problem with the ignition coil supply voltage circuit in bank 1. The ignition coil is a crucial component responsible for converting the low voltage from the battery into the high voltage needed to ignite the fuel in the engine cylinders. In this case, the issue lies in the supply voltage circuit for one of the ignition coils in bank 1, which can lead to misfires, rough idling, and decreased engine performance. If left unaddressed, this problem can potentially cause damage to the engine, reduce fuel efficiency, and even lead to a complete breakdown of the ignition system.
Common Causes of P135A 2014 Chevrolet Silverado
- Faulty ignition coil in bank 1.
- Wiring or connection issues in the ignition coil supply voltage circuit.
- Defective spark plugs.
- Issues with the engine control module (ECM) or powertrain control module (PCM).
- Electrical problems such as a blown fuse or relay related to the ignition system.
Symptoms of P135A 2014 Chevrolet Silverado
- Engine misfires or hesitation during acceleration.
- Rough idling or stalling of the engine.
- Decreased fuel efficiency.
- Illumination of the check engine light.
- Difficulty starting the vehicle.
How to Fix P135A 2014 Chevrolet Silverado
- Use a diagnostic scanner to identify the specific ignition coil in bank 1 that is causing the issue.
- Inspect the wiring and connections in the ignition coil supply voltage circuit for any damage or loose connections.
- Test the ignition coil with a multimeter to check for proper resistance and continuity.
- Replace the faulty ignition coil if necessary.
- Clear the diagnostic trouble codes and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix P135A 2014 Chevrolet Silverado
The typical repair costs for addressing an ignition coil supply voltage circuit issue in a 2014 Chevrolet Silverado can range from $150 to $400, including parts and labor. However, the actual cost may vary based on the severity of the problem, the specific components that need to be replaced, and the rates charged by auto repair shops in your area. It's recommended to obtain a detailed quote from a reputable repair facility before proceeding with the repairs.
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Frequently Asked Questions about P135A 2014 Chevrolet Silverado Code
1. What does the OBDII code P135A mean on a 2014 Chevrolet Silverado?
P135A indicates an issue with the ignition coil supply voltage circuit on Bank 1, meaning the power supply to one or more ignition coils on that side of the engine is disrupted.
2. What are the common symptoms of the P135A code in a 2014 Chevrolet Silverado?
Symptoms may include engine misfires, rough idling, reduced power, a flashing check engine light, and poor fuel economy.
3. What causes the P135A code on a 2014 Chevrolet Silverado?
Common causes include a faulty ignition coil, damaged wiring or connectors in the ignition coil circuit, a failing powertrain control module (PCM), or issues with the battery or alternator.
4. Is the P135A code serious, and can I still drive my Silverado?
This code is serious because it can lead to engine misfires and potential damage to engine components or the catalytic converter. Driving with this code is not recommended.
5. How do I diagnose the P135A code on my 2014 Chevrolet Silverado?
Start by checking the ignition coil wiring and connectors for damage or corrosion. Then use a multimeter to test for proper voltage at the ignition coil. If the wiring is intact, test the ignition coil or PCM.
6. Can a faulty ignition coil cause the P135A code?
Yes, a faulty ignition coil can cause this code if it fails to receive or distribute the necessary voltage for proper spark.
7. How do I fix the P135A code on my 2014 Chevrolet Silverado?
Repairs may include replacing a defective ignition coil, repairing or replacing damaged wiring, cleaning or replacing corroded connectors, or reprogramming or replacing the PCM if necessary.
8. How much does it cost to repair the P135A code on a 2014 Chevrolet Silverado?
Repair costs vary but typically range from $150 to $400, depending on whether the issue is with the ignition coil, wiring, or PCM.
9. Can a weak battery or alternator trigger the P135A code?
Yes, a weak battery or failing alternator can cause low voltage in the ignition coil circuit, leading to the P135A code.
10. Will clearing the P135A code with a scanner fix the problem?
Clearing the code with a scanner will erase it temporarily, but the root cause of the issue must be addressed to prevent the code from returning.
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