P135B 2015 Chevrolet Silverado Code - Ignition Coil Supply Voltage Circuit Bank 2
Quick Answer
The diagnostic trouble code P135B for a 2015 Chevrolet Silverado refers to an issue with the Ignition Coil Supply Voltage Circuit in Bank 2. Common causes include Faulty ignition coil, Damaged wiring or connectors in the ignition coil circuit, Malfunctioning engine control module (ECM). 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
- P135B 2015 Chevrolet Silverado indicates Ignition Coil Supply Voltage Circuit Bank 2.
- Common causes
- Common causes include Faulty ignition coil, Damaged wiring or connectors in the ignition coil circuit, Malfunctioning engine control module (ECM).
- 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 P135B 2015 Chevrolet Silverado Description
The diagnostic trouble code P135B for a 2015 Chevrolet Silverado refers to an issue with the Ignition Coil Supply Voltage Circuit in Bank 2. This code indicates that there is a problem with the voltage supply to the ignition coil in the second bank of cylinders in the engine. The ignition coil is responsible for converting the low voltage from the battery into the high voltage needed to create a spark in the spark plugs, which ignites the air-fuel mixture in the combustion chamber.
Common Causes of P135B 2015 Chevrolet Silverado
- Faulty ignition coil
- Damaged wiring or connectors in the ignition coil circuit
- Malfunctioning engine control module (ECM)
- Power supply issues to the ignition coil
- Environmental factors such as moisture or corrosion
Symptoms of P135B 2015 Chevrolet Silverado
- Engine misfires
- Rough idling or stalling
- Reduced acceleration
- Check Engine Light illuminated
- Decreased fuel efficiency
How to Fix P135B 2015 Chevrolet Silverado
- Diagnose the specific cause of the issue using a diagnostic scanner to pinpoint the faulty component.
- Inspect the ignition coil, wiring, and connectors for any visible damage or wear.
- Test the power supply to the ignition coil to ensure it is functioning correctly.
- Replace the faulty ignition coil, repair any damaged wiring or connectors, and reset the ECM if necessary.
- Clear the diagnostic trouble codes and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix P135B 2015 Chevrolet Silverado
The typical repair costs for addressing the Ignition Coil Supply Voltage Circuit issue in a 2015 Chevrolet Silverado can range from $150 to $400, depending on the specific cause of the problem and the cost of parts and labor. It's important to note that labor rates at auto repair shops can vary, with hourly rates typically ranging from $80 to $150. Factors such as location, vehicle make and model, and engine type can also influence the overall repair costs. To obtain a more accurate estimate, it is recommended to consult with local auto repair shops.
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Frequently Asked Questions about P135B 2015 Chevrolet Silverado Code
1. What does the OBDII code P135B mean on a 2015 Chevrolet Silverado?
The P135B code indicates an issue with the ignition coil supply voltage circuit on Bank 2, meaning the power supply or control signal to the ignition coils on that side of the engine is compromised.
2. What are the common symptoms of the P135B code in a 2015 Chevrolet Silverado?
Symptoms may include a misfiring engine, reduced power, rough idling, hesitation during acceleration, and the Check Engine Light being illuminated.
3. What causes the P135B code to appear on a 2015 Chevrolet Silverado?
Common causes include a faulty ignition coil, damaged wiring or connectors in the ignition coil circuit, a bad ignition control module, or a failing PCM (powertrain control module).
4. Is it safe to drive with the P135B code on a 2015 Chevrolet Silverado?
It’s not recommended to drive for long periods with this code, as it can lead to engine misfires, poor performance, and potential damage to the catalytic converter.
5. How do you diagnose the P135B code in a 2015 Chevrolet Silverado?
Diagnostics typically involve checking the ignition coil on Bank 2, inspecting the wiring and connectors for damage or corrosion, testing the ignition control module, and using a multimeter to verify voltage and continuity in the circuit.
6. Can a faulty ignition coil trigger the P135B code on a 2015 Chevrolet Silverado?
Yes, a faulty ignition coil can cause this code by disrupting the proper voltage supply or signal in the circuit.
7. What repairs are needed to fix the P135B code on a 2015 Chevrolet Silverado?
Repairs may include replacing the faulty ignition coil, repairing or replacing damaged wiring or connectors, or, in rare cases, replacing the ignition control module or PCM.
8. How much does it cost to fix the P135B code on a 2015 Chevrolet Silverado?
The cost varies depending on the specific issue but can range from $100 to $300 for ignition coil replacement or wiring repairs, with higher costs if the PCM or ignition control module needs replacement.
9. Can a weak battery cause the P135B code on a 2015 Chevrolet Silverado?
While uncommon, a weak or failing battery can contribute to voltage-related issues that might trigger this code, so it’s worth checking the battery and charging system.
10. How can I prevent the P135B code from recurring on my 2015 Chevrolet Silverado?
Regular maintenance of the ignition system, including inspecting and replacing ignition coils and wiring as needed, can help prevent this code from reappearing.
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