P2306 2015 GMC Sierra Code - Ignition Coil 3 Control Circuit Low Voltage
Quick Answer
The ignition system on this engine uses ignition coils with integrated power transistors. Common causes include Faulty Ignition Coil 3, Ignition Coil 3 harness is open or shorted, Ignition Coil 3 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
- P2306 2015 GMC Sierra indicates Ignition Coil 3 Control Circuit Low Voltage.
- Common causes
- Common causes include Faulty Ignition Coil 3, Ignition Coil 3 harness is open or shorted, Ignition Coil 3 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 P2306 2015 GMC Sierra Description
What are the Possible Causes of the DTC P2306 2015 GMC Sierra?
- Faulty Ignition Coil 3
- Ignition Coil 3 harness is open or shorted
- Ignition Coil 3 circuit poor electrical connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC P2306 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 P2306 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 P2306 2015 GMC Sierra code?
Need more information on how to fix the P2306 2015 GMC Sierra code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P2306 2015 GMC Sierra code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P2306 2015 GMC Sierra Code
What does code P2306 mean for a 2015 GMC Sierra?
Code P2306 indicates a low voltage condition in the Ignition Coil 3 control circuit, which can impact engine performance.
What are the common symptoms of P2306 in a 2015 GMC Sierra?
Symptoms include engine misfires, rough idling, decreased fuel efficiency, poor acceleration, and possible illumination of the Check Engine Light.
What causes the P2306 code in a 2015 GMC Sierra?
Causes may include a faulty ignition coil, damaged wiring or connectors in the control circuit, a bad ECM, or issues with the coil driver circuitry.
Can I drive my 2015 GMC Sierra with the P2306 code?
Driving with this code can lead to further engine damage or reduced performance. It’s recommended to address the issue promptly.
How do I diagnose the P2306 code in a 2015 GMC Sierra?
Diagnosis involves inspecting the ignition coil, checking for damaged wiring or connectors, testing the ECM, and using a multimeter to measure voltage in the control circuit.
What tools are needed to fix the P2306 code?
Common tools include an OBDII scanner, multimeter, wiring diagrams, and basic hand tools for removing and replacing ignition components.
How much does it cost to fix the P2306 code?
Repair costs vary but typically range from $100 to $300, depending on whether you replace the ignition coil, repair wiring, or address ECM issues.
What is the first step to fixing the P2306 code?
Start by inspecting the wiring and connectors for damage or corrosion near Ignition Coil 3 and replace or repair them as needed.
Can a bad ignition coil cause the P2306 code?
Yes, a malfunctioning ignition coil can cause the P2306 code due to insufficient voltage in the control circuit.
Should I replace the ECM if I see the P2306 code?
Replacing the ECM is a last resort after confirming that the ignition coil and wiring are in good condition and the issue persists.
Discuss the causes and fixes for P2306 2015 GMC Sierra OBDII Code
Code P2306 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.
