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P2312 2016 GMC Sierra Code - Ignition Coil 5 Control Circuit Low Voltage

Quick Answer

The diagnostic trouble code P2312 for a 2016 GMC Sierra indicates a problem with the ignition coil 5 control circuit experiencing low voltage. Common causes include Faulty wiring in the ignition coil circuit, Damaged ignition coil, Malfunctioning powertrain control module (PCM). 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
P2312 2016 GMC Sierra indicates Ignition Coil 5 Control Circuit Low Voltage.
Common causes
Common causes include Faulty wiring in the ignition coil circuit, Damaged ignition coil, Malfunctioning powertrain control module (PCM).
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 17, 2024
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Code P2312 2016 GMC Sierra Description

The diagnostic trouble code P2312 for a 2016 GMC Sierra indicates a problem with the ignition coil 5 control circuit experiencing low voltage. The ignition coil is a crucial component of the vehicle's ignition system, responsible for converting the low voltage from the battery into the high voltage needed to create a spark in the spark plugs. Ignition coil 5 specifically refers to the coil associated with the fifth cylinder in the engine.

OBDII Code P2312 2016 GMC Sierra - Ignition Coil 5 Control Circuit Low Voltage
P2312 2016 GMC Sierra Code - Ignition Coil 5 Control Circuit Low Voltage

Common Causes of P2312 2016 GMC Sierra

  1. Faulty wiring in the ignition coil circuit
  2. Damaged ignition coil
  3. Malfunctioning powertrain control module (PCM)
  4. Issues with spark plugs or spark plug wires
  5. Corrosion or loose connections in the electrical system

Symptoms of P2312 2016 GMC Sierra

  1. Misfires
  2. Rough idling
  3. Poor acceleration
  4. Engine stalling
  5. Difficulty starting

How to Fix P2312 2016 GMC Sierra

  1. Begin by inspecting the wiring and connections related to ignition coil 5 for any signs of damage, corrosion, or loose connections.
  2. Test the ignition coil using a multimeter to determine if it is functioning correctly. Replace the ignition coil if necessary.
  3. Check the powertrain control module (PCM) for any error codes and ensure it is operating properly. Reset or replace the PCM if needed.
  4. Inspect the spark plugs and spark plug wires for wear or damage. Replace them if necessary.
  5. Clear the diagnostic trouble code from the vehicle's system using an OBD-II scanner after completing the repairs.

Cost to Fix P2312 2016 GMC Sierra

The typical repair costs for addressing the ignition coil 5 control circuit low voltage issue can vary depending on the specific cause of the problem. In general, replacing an ignition coil can cost between $100 and $300, while the cost of a new powertrain control module (PCM) can range from $200 to $500. Labor costs at auto repair shops typically range from $80 to $150 per hour. It is advisable to consult with a professional mechanic to get an accurate estimate based on the specific circumstances of your vehicle.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P2312 2016 GMC Sierra Code

1. What are common symptoms of OBDII code P2312 in a 2016 GMC Sierra related to Ignition Coil 5 Control Circuit Low Voltage?

- Common symptoms include rough engine idle, misfiring, loss of power, and illuminated Check Engine Light.

2. What are the potential causes of OBDII code P2312 in a 2016 GMC Sierra?

- Possible causes include a faulty ignition coil, damaged wiring or connectors, a malfunctioning Engine Control Module (ECM), or a weak electrical connection.

3. How can I diagnose the issue related to code P2312 in my 2016 GMC Sierra?

- Diagnose the problem by visually inspecting the ignition coil and its connections, testing the coil with a multimeter, checking for damaged wiring, and scanning the ECM for any related fault codes.

4. Can driving with OBDII code P2312 in a 2016 GMC Sierra cause further damage?

- Continuing to drive with this code may lead to reduced engine performance, increased fuel consumption, and potential damage to the catalytic converter.

5. Is it safe to continue driving my 2016 GMC Sierra with OBDII code P2312 present?

- It is not recommended to drive the vehicle with code P2312 as it can lead to potential engine misfires and other issues that may affect the overall performance and safety of the vehicle.

6. How can I repair OBDII code P2312 in a 2016 GMC Sierra related to Ignition Coil 5 Control Circuit Low Voltage?

- Repair options include replacing the faulty ignition coil, repairing damaged wiring or connectors, resetting the ECM, and ensuring all electrical connections are secure.

7. Can I reset the Check Engine Light after repairing OBDII code P2312 in my 2016 GMC Sierra?

- Yes, you can reset the Check Engine Light using an OBDII scanner after addressing the underlying issue causing code P2312.

8. Do I need special tools to fix OBDII code P2312 in a 2016 GMC Sierra?

- While basic tools like a multimeter and wrenches may be needed, it is advisable to consult a professional mechanic for proper diagnosis and repair of code P2312.

9. How much does it cost to repair OBDII code P2312 in a 2016 GMC Sierra at a mechanic's shop?

- The cost of repairs for code P2312 can vary depending on the exact cause of the issue, but it may range from $100 to $300 for parts and labor.

10. Are there any preventive measures to avoid OBDII code P2312 in a 2016 GMC Sierra in the future?

- Regular maintenance, such as inspecting ignition components, checking electrical connections, and addressing any warning signs promptly, can help prevent issues leading to code P2312.

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