P135B 2014 GMC Sierra Code - Ignition Coil Supply Voltage Circuit Bank 2
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
- P135B 2014 GMC Sierra indicates Ignition Coil Supply Voltage Circuit Bank 2.
- 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 P135B 2014 GMC Sierra Description
What are the Possible Causes of the DTC P135B 2014 GMC Sierra?
- 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 P135B 2014 GMC Sierra?
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 P135B 2014 GMC Sierra 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 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.
Discuss the causes and fixes for P135B 2014 GMC Sierra OBDII Code
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