P135A 2014 Chevrolet Silverado Code - Ignition Coil Supply Voltage Circuit Bank 1
Quick Answer
The ignition system uses an individual ignition coil for each cylinder. Common causes include Blown Ignition Coil Fuse, Ignition Coil Fuse harness is open or shorted, Ignition Coil Fuse circuit poor electrical connection. 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 Blown Ignition Coil Fuse, Ignition Coil Fuse harness is open or shorted, Ignition Coil Fuse circuit poor electrical connection.
- 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.
Code P135A 2014 Chevrolet Silverado Description
What are the Possible Causes of the DTC P135A 2014 Chevrolet Silverado?
- Blown Ignition Coil Fuse
- Ignition Coil Fuse harness is open or shorted
- Ignition Coil Fuse circuit poor electrical connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC P135A 2014 Chevrolet Silverado?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P135A 2014 Chevrolet Silverado code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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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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