P135A 2018 Chevrolet Silverado Code - Ignition Coil Supply Voltage Circuit Bank 1
Quick Answer
The P135A diagnostic trouble code (DTC) for a 2018 Chevrolet Silverado indicates a problem with the Ignition Coil Supply Voltage Circuit on Bank 1. Common causes include Faulty ignition coil, Wiring or connector issues in the ignition coil supply voltage circuit, Blown fuse related to the ignition coil circuit. 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 Faulty ignition coil, Wiring or connector issues in the ignition coil supply voltage circuit, Blown fuse related to the ignition coil circuit.
- 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 2018 Chevrolet Silverado Description
The P135A diagnostic trouble code (DTC) for a 2018 Chevrolet Silverado indicates a problem with the Ignition Coil Supply Voltage Circuit on Bank 1. This code specifically points to an issue with the electrical supply voltage to the ignition coil in one of the engine's banks. The ignition coil is a crucial component responsible for converting low voltage power from the battery into high voltage power needed to ignite the air-fuel mixture in the engine's cylinders. When the ignition coil supply voltage circuit malfunctions, it can lead to misfires, poor engine performance, and even engine stalling.
Common Causes of P135A 2018 Chevrolet Silverado
- Faulty ignition coil
- Wiring or connector issues in the ignition coil supply voltage circuit
- Blown fuse related to the ignition coil circuit
- Issues with the Engine Control Module (ECM) or Powertrain Control Module (PCM)
- Voltage supply issues from the battery or alternator
Symptoms of P135A 2018 Chevrolet Silverado
- Engine misfires or rough idle
- Reduced engine power
- Difficulty starting the engine
- Decreased fuel efficiency
- Illumination of the check engine light
How to Fix P135A 2018 Chevrolet Silverado
- Begin by diagnosing the specific cause of the issue using a diagnostic scanner to pinpoint the exact source of the problem.
- Inspect the ignition coil, wiring, and connectors for any signs of damage or wear. Replace any faulty components as needed.
- Check and replace any blown fuses related to the ignition coil circuit.
- Test the voltage supply from the battery and alternator to ensure they are providing the correct power to the ignition coil.
- Clear the DTC and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix P135A 2018 Chevrolet Silverado
The typical repair costs for addressing a P135A code on a 2018 Chevrolet Silverado can range from $150 to $500, depending on the specific cause of the issue and the cost of replacement parts. This estimate includes both parts and labor. However, it is important to note that actual repair costs can vary based on factors such as the location of the repair shop, the vehicle's make and model, and the type of engine. Additionally, labor rates at dealerships or in metropolitan areas may be higher, while independent shops often offer more competitive rates. It is recommended to obtain quotes from multiple repair shops to determine the most cost-effective option.
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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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