P135A 2018 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 2018 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 2018 Chevrolet Silverado Description
What are the Possible Causes of the DTC P135A 2018 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 2018 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 2018 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 2018 Chevrolet Silverado Code
1. What does the OBDII code P135A mean on a 2018 Chevrolet Silverado?
The P135A code indicates an issue with the ignition coil supply voltage circuit on Bank 1, which may involve a voltage discrepancy or fault in the circuit.
2. What are the common symptoms of the P135A code?
Symptoms may include engine misfires, rough idling, reduced power, poor fuel economy, and an illuminated check engine light.
3. What causes the P135A code to appear?
Common causes include a faulty ignition coil, damaged wiring or connectors in the ignition coil circuit, a failed powertrain control module (PCM), or low system voltage.
4. How is the P135A code diagnosed?
Diagnosis typically involves using a scan tool to confirm the code, inspecting the ignition coil and its wiring, testing circuit voltage, and checking for related issues like a weak battery or PCM fault.
5. Can I drive my 2018 Chevrolet Silverado with the P135A code?
While the vehicle may still be drivable, it's not advisable as the issue can cause engine misfires, reduced performance, and potential damage to the catalytic converter.
6. How do you fix the P135A code?
Repairs may include replacing the faulty ignition coil, repairing damaged wiring or connectors, ensuring proper grounding, or addressing a PCM issue if necessary.
7. How much does it cost to fix the P135A code?
Repair costs can vary but typically range from $100 to $300 for parts and labor, depending on whether the ignition coil, wiring, or other components need replacement.
8. Can a bad battery cause the P135A code?
Yes, a weak or failing battery can cause voltage issues that trigger the P135A code, as the ignition coil relies on stable voltage for proper operation.
9. Is the P135A code specific to Bank 1 on the engine?
Yes, the code specifically refers to the ignition coil supply voltage circuit issue on Bank 1, which is the side of the engine containing Cylinder 1.
10. Can I clear the P135A code without fixing the issue?
Clearing the code without addressing the root cause may temporarily turn off the check engine light, but the problem will likely return, potentially causing further damage.
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