P135B 2014 GMC Sierra Code - Ignition Coil Supply Voltage Circuit Bank 2
Quick Answer
The P135B diagnostic trouble code (DTC) for a 2014 GMC Sierra specifically refers to the Ignition Coil Supply Voltage Circuit Bank 2. Common causes include Wiring issues, Faulty ignition coil, Malfunctioning ignition control module. 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 2014 GMC Sierra indicates Ignition Coil Supply Voltage Circuit Bank 2.
- Common causes
- Common causes include Wiring issues, Faulty ignition coil, Malfunctioning ignition control module.
- 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 2014 GMC Sierra Description
The P135B diagnostic trouble code (DTC) for a 2014 GMC Sierra specifically refers to the Ignition Coil Supply Voltage Circuit Bank 2. This code indicates a problem with the supply voltage to the ignition coil in the second bank of cylinders. 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. In this case, the issue lies in the circuit that supplies power to the ignition coil in the second bank of cylinders.
Common Causes of P135B 2014 GMC Sierra
- Wiring issues
- Faulty ignition coil
- Malfunctioning ignition control module
- Problem with the engine control module (ECM)
- Poor electrical connection
Symptoms of P135B 2014 GMC Sierra
- Engine misfires
- Rough idling
- Decreased fuel efficiency
- Engine stalling
- Illumination of the check engine light
How to Fix P135B 2014 GMC Sierra
- Begin by conducting a thorough inspection of the wiring harness and connectors related to the ignition coil supply voltage circuit.
- Test the ignition coil in Bank 2 to determine if it is functioning correctly or needs replacement.
- Check the ignition control module and ECM for any faults or malfunctions that could be affecting the supply voltage.
- If necessary, replace the faulty components and ensure proper connection and grounding of the ignition coil supply voltage circuit.
Cost to Fix P135B 2014 GMC Sierra
The typical repair costs for addressing the P135B code on a 2014 GMC Sierra can range from $150 to $400, depending on the specific cause of the issue and the cost of replacement parts. It is important to note that diagnosis time and labor rates at auto repair shops can vary, with hourly rates typically ranging from $80 to $150. Rates may be higher at dealerships or in metropolitan areas, while independent shops may offer lower prices. For a more accurate estimate, it is recommended to inquire with local auto repair shops.
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Frequently Asked Questions about P135B 2014 GMC Sierra Code
What does the OBDII code P135B mean on a 2014 GMC Sierra?
P135B indicates an issue with the ignition coil supply voltage circuit for Bank 2, meaning there may be a fault in the electrical supply to one or more ignition coils on that side of the engine.
What are the common symptoms of code P135B in a 2014 GMC Sierra?
Symptoms may include engine misfires, rough idling, poor acceleration, reduced fuel efficiency, and the check engine light being illuminated.
What causes the P135B code to appear on a 2014 GMC Sierra?
Possible causes include a faulty ignition coil, damaged wiring or connectors in the ignition coil circuit, a blown fuse, or a malfunctioning engine control module (ECM).
Can I drive my 2014 GMC Sierra with the P135B code?
Driving with this code is not recommended, as it can cause engine misfires and potentially lead to further damage to the engine or catalytic converter if left unresolved.
How do I diagnose the P135B code on a 2014 GMC Sierra?
Diagnosis involves inspecting the ignition coil wiring and connectors for damage, testing the ignition coils, checking fuses, and scanning the ECM for further related codes.
What tools are needed to fix the P135B code on a 2014 GMC Sierra?
Tools may include a multimeter for electrical testing, an OBDII scanner for diagnostics, and basic hand tools like wrenches and screwdrivers to access ignition components.
How much does it cost to repair the P135B code on a 2014 GMC Sierra?
Repair costs can vary, but replacing a single ignition coil typically ranges from $100 to $300, while fixing wiring or ECM issues may cost more depending on the extent of the damage.
Can a faulty ECM cause the P135B code in a 2014 GMC Sierra?
Yes, a malfunctioning ECM can fail to properly control the ignition coil supply voltage, triggering the P135B code.
How can I prevent the P135B code from occurring in the future?
Regular maintenance, including inspecting ignition system components and addressing minor issues promptly, can help prevent this code from appearing.
Is the P135B code specific to Bank 2 of the engine?
Yes, the P135B code specifically refers to an issue with the ignition coil supply voltage circuit on Bank 2, which is the side of the engine opposite Bank 1.
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