P135B 2015 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 2015 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 2015 GMC Sierra Description
What are the Possible Causes of the DTC P135B 2015 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 2015 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 2015 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.
Need more information about the P135B 2015 GMC Sierra code?
Need more information on how to fix the P135B 2015 GMC Sierra code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P135B 2015 GMC Sierra code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P135B 2015 GMC Sierra Code
What does the OBDII code P135B mean in a 2015 GMC Sierra?
P135B indicates a problem with the ignition coil supply voltage circuit on Bank 2, which can affect engine performance and ignition timing.
What are common symptoms of code P135B in a 2015 GMC Sierra?
Symptoms may include a rough idle, engine misfires, reduced power, poor fuel economy, and the Check Engine Light illuminating.
What causes the P135B code to trigger in a 2015 GMC Sierra?
Common causes include a faulty ignition coil, damaged wiring or connectors in the ignition coil circuit, a blown fuse, or issues with the powertrain control module (PCM).
How do I diagnose the P135B code on my 2015 GMC Sierra?
Start by checking for damaged wiring, loose connections, or blown fuses in the ignition coil circuit for Bank 2. Use a multimeter to test voltage and resistance, and inspect the ignition coil itself.
Can I drive my 2015 GMC Sierra with the P135B code?
Driving with this code is not recommended, as it can lead to engine misfires, reduced performance, and potential long-term engine damage if not addressed promptly.
How do I fix the P135B code on a 2015 GMC Sierra?
Repairs may involve replacing a faulty ignition coil, repairing damaged wiring, securing loose connections, replacing a blown fuse, or reprogramming the PCM if necessary.
What tools do I need to repair the P135B code on a 2015 GMC Sierra?
You'll need an OBDII scanner, multimeter, and basic hand tools such as pliers and screwdrivers to inspect and repair wiring and components.
How much does it cost to fix the P135B code on a 2015 GMC Sierra?
Repair costs vary depending on the issue but can range from $50-$150 for a new ignition coil or several hundred dollars if PCM reprogramming or extensive wiring repairs are needed.
Can a bad PCM cause the P135B code in a 2015 GMC Sierra?
Yes, a faulty PCM can cause this code if it fails to properly control the ignition coil supply voltage circuit for Bank 2.
How can I prevent the P135B code from occurring in my 2015 GMC Sierra?
Regular maintenance, including inspecting ignition components and wiring for wear or damage, can help prevent this code from appearing.
Discuss the causes and fixes for P135B 2015 GMC Sierra OBDII Code
Code P135B 2015 GMC Sierra comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
