P135A 2017 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 2017 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 2017 Chevrolet Silverado Description
What are the Possible Causes of the DTC P135A 2017 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 2017 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 2017 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 2017 Chevrolet Silverado Code
1. What does the OBDII code P135A mean on a 2017 Chevrolet Silverado?
P135A indicates an issue with the ignition coil supply voltage circuit on Bank 1, meaning the voltage to one or more ignition coils is outside the expected range.
2. What are the common symptoms of P135A in a 2017 Chevrolet Silverado?
Symptoms may include engine misfires, rough idling, reduced power, poor fuel efficiency, and an illuminated check engine light.
3. What causes the P135A code to appear on a 2017 Chevrolet Silverado?
Common causes include a faulty ignition coil, damaged wiring or connectors in the coil circuit, a failing PCM (Powertrain Control Module), or a blown fuse supplying power to the ignition coils.
4. How can I diagnose the P135A code on my Silverado?
Start by checking for visible damage to the ignition coil wiring and connectors, test the ignition coil with a multimeter, and inspect fuses related to the coil circuit. If no issues are found, further testing of the PCM may be needed.
5. Can a bad ignition coil cause the P135A code?
Yes, a malfunctioning ignition coil can disrupt the supply voltage and trigger the P135A code.
6. Is it safe to drive my 2017 Silverado with the P135A code?
It’s not recommended to drive for extended periods, as this code can cause misfires and potentially damage the catalytic converter or other engine components.
7. How do I fix the P135A code on a 2017 Chevrolet Silverado?
Repairs may involve replacing a faulty ignition coil, repairing or replacing damaged wiring, securing loose connectors, or replacing a blown fuse. In some cases, reprogramming or replacing the PCM may be necessary.
8. Which bank is referred to by Bank 1 in the P135A code?
Bank 1 refers to the side of the engine containing cylinder 1. On V8 engines in the Silverado, this is typically the driver’s side.
9. Can low battery voltage cause the P135A code?
Yes, low battery voltage or charging system issues can affect the ignition coil supply voltage and trigger this code.
10. How much does it cost to repair the P135A code on a 2017 Chevrolet Silverado?
Costs vary depending on the issue; replacing an ignition coil typically costs $100–$300, while wiring or PCM repairs can range higher depending on labor and parts.
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