P135A 2015 Chevrolet Silverado Code - Ignition Coil Supply Voltage Circuit Bank 1
Quick Answer
The P135A diagnostic trouble code (DTC) for a 2015 Chevrolet Silverado specifically refers to the Ignition Coil Supply Voltage Circuit Bank 1. Common causes include Faulty ignition coil: A defective ignition coil can disrupt the supply of voltage to the spark plugs, leading to ignition problems, Wiring issues: Damaged or corroded wiring in the ignition coil supply voltage circuit can cause electrical malfunctions, Engine control module (ECM) issues: Problems with the ECM, which controls the ignition system, can result in the P135A code. 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 2015 Chevrolet Silverado indicates Ignition Coil Supply Voltage Circuit Bank 1.
- Common causes
- Common causes include Faulty ignition coil: A defective ignition coil can disrupt the supply of voltage to the spark plugs, leading to ignition problems, Wiring issues: Damaged or corroded wiring in the ignition coil supply voltage circuit can cause electrical malfunctions, Engine control module (ECM) issues: Problems with the ECM, which controls the ignition system, can result in the P135A code.
- 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 2015 Chevrolet Silverado Description
The P135A diagnostic trouble code (DTC) for a 2015 Chevrolet Silverado specifically refers to the Ignition Coil Supply Voltage Circuit Bank 1. This code indicates that there is a problem with the electrical circuit responsible for supplying power to the ignition coil in the first bank of the engine. The ignition coil is a crucial component in the ignition system of a vehicle, responsible for converting the low voltage from the battery into the high voltage needed to create a spark in the spark plugs, which in turn ignites the fuel-air mixture in the engine cylinders.
Common Causes of P135A 2015 Chevrolet Silverado
- Faulty ignition coil: A defective ignition coil can disrupt the supply of voltage to the spark plugs, leading to ignition problems.
- Wiring issues: Damaged or corroded wiring in the ignition coil supply voltage circuit can cause electrical malfunctions.
- Engine control module (ECM) issues: Problems with the ECM, which controls the ignition system, can result in the P135A code.
- Poor electrical connections: Corrosion or poor connections in the wiring or connectors related to the ignition coil supply voltage circuit can trigger this code.
Symptoms of P135A 2015 Chevrolet Silverado
- Engine misfires: The most common symptom associated with the P135A code is engine misfires, which can manifest as a rough running engine, hesitation, or lack of power.
- Rough idling: A malfunctioning ignition coil supply voltage circuit can cause the engine to idle erratically or inconsistently.
- Decreased fuel efficiency: An issue with the ignition system can lead to poor fuel combustion, resulting in decreased fuel efficiency.
- Engine stalling: In severe cases, the vehicle may experience engine stalling, especially during acceleration or at idle.
How to Fix P135A 2015 Chevrolet Silverado
- Diagnose the issue: Use a diagnostic scanner to read the code and pinpoint the exact cause of the problem in the ignition coil supply voltage circuit.
- Inspect wiring and connectors: Check the wiring harness and connectors for any signs of damage, corrosion, or loose connections. Repair or replace as needed.
- Test the ignition coil: Test the ignition coil for proper functioning using a multimeter to ensure it is receiving the correct voltage.
- Check the ECM: Inspect the engine control module for any signs of damage or malfunction. If necessary, reprogram or replace the ECM.
- Clear the code: After making the necessary repairs, clear the code using the diagnostic scanner to reset the vehicle's computer and ensure the issue has been resolved.
Cost to Fix P135A 2015 Chevrolet Silverado
The cost of repairing the Ignition Coil Supply Voltage Circuit Bank 1 issue on a 2015 Chevrolet Silverado can vary depending on the extent of the damage and the specific parts that need to be replaced. On average, the parts for this repair can range from $50 to $200, while labor costs can vary between $100 and $300. This brings the total estimated cost to around $150 to $500. It's important to note that diagnostic time and labor rates at auto repair shops can fluctuate, so it's advisable to check with local shops for a more accurate estimate based on your location and vehicle specifics.
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Frequently Asked Questions about P135A 2015 Chevrolet Silverado Code
1. What does the OBDII code P135A mean on a 2015 Chevrolet Silverado?
P135A indicates an issue with the ignition coil supply voltage circuit on Bank 1, which may affect engine performance.
2. What are the common symptoms of code P135A in a 2015 Chevrolet Silverado?
Symptoms include rough idling, misfires, reduced engine power, poor fuel economy, and the Check Engine Light being illuminated.
3. What causes the P135A code to appear on a 2015 Chevrolet Silverado?
Common causes include faulty ignition coils, damaged wiring or connectors in the ignition coil circuit, or a failed powertrain control module (PCM).
4. How do I diagnose the P135A code on my 2015 Chevrolet Silverado?
Start by inspecting the ignition coil wiring and connectors for damage or corrosion, test the ignition coil on Bank 1, and check for proper voltage supply using a multimeter.
5. Can I drive my 2015 Chevrolet Silverado with the P135A code?
Driving with this code is not recommended, as it can lead to engine misfires, reduced performance, and potential damage to other components like the catalytic converter.
6. How do I fix the P135A code on a 2015 Chevrolet Silverado?
Repairs may include replacing the faulty ignition coil, repairing damaged wiring or connectors, or reprogramming or replacing the PCM if necessary.
7. How much does it cost to repair the P135A code on a 2015 Chevrolet Silverado?
Repair costs vary but typically range from $100 to $300 for ignition coil replacement, with additional costs for wiring repairs or PCM replacement if needed.
8. Can a weak battery cause the P135A code in a 2015 Chevrolet Silverado?
Yes, a weak or failing battery can cause voltage irregularities that might trigger this code.
9. What tools are needed to troubleshoot the P135A code on a 2015 Chevrolet Silverado?
You’ll need an OBDII scanner, a multimeter, and potentially wiring diagrams for the ignition coil circuit.
10. Is P135A a common issue for the 2015 Chevrolet Silverado?
While not extremely common, ignition coil-related issues can occur due to wear and tear or electrical problems, especially as the vehicle ages.
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