AutoCodes – Dodge – P2331 Dodge

P2331 Dodge Code - Ignition Coil 'K' Primary Control Circuit High

Quick Answer

The current flow, or dwell, through the primary ignition coil is controlled by the Powertrain Control Module (PCM) by providing a switched ground path through the ignition coil driver to ground. Common causes include Faulty Ignition Coil 'K', Ignition Coil 'K' harness is open or shorted, Ignition Coil 'K' 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
P2331 Dodge indicates Ignition Coil 'K' Primary Control Circuit High.
Common causes
Common causes include Faulty Ignition Coil 'K', Ignition Coil 'K' harness is open or shorted, Ignition Coil 'K' 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 2,590
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 14, 2020
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Code P2331 Dodge Description

The current flow, or dwell, through the primary ignition coil is controlled by the Powertrain Control Module (PCM) by providing a switched ground path through the ignition coil driver to ground. When the ignition coil driver is switched on, current rapidly builds up to a maximum value, determined by the coil inductance and resistance. When the current is switched off, the magnetic field collapses which induces a secondary high voltage surge and the spark plug is fired. This high voltage surge creates a flyback voltage which the PCM uses as a feedback during the ignition diagnostics. The PCM continuously monitors the ignition system for concerns. The P2331 code sets when the PCM detects a short to voltage in the circuit.
OBDII Code P2331 Dodge - Ignition Coil 'K' Primary Control Circuit High - AutoCodes.com
P2331 Dodge Code - Ignition Coil 'K' Primary Control Circuit High

What are the Possible Causes of the DTC P2331 Dodge?

  • Faulty Ignition Coil 'K'
  • Ignition Coil 'K' harness is open or shorted
  • Ignition Coil 'K' circuit poor electrical connection

How to Fix the DTC P2331 Dodge?

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 P2331 Dodge 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 P2331 Dodge code?

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Need Help with the Code?

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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 P2331 Dodge Code

1. What are the common symptoms of OBDII code P2331 in a Dodge related to the Ignition Coil 'K' Primary Control Circuit High?

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

2. What are the possible causes of OBDII code P2331 in a Dodge indicating an issue with the Ignition Coil 'K' Primary Control Circuit High?

- Possible causes include a faulty ignition coil, damaged wiring or connectors in the ignition coil circuit, or an issue with the Engine Control Module (ECM).

3. How can I diagnose the cause of OBDII code P2331 in my Dodge with the Ignition Coil 'K' Primary Control Circuit High issue?

- A thorough inspection of the ignition coil, wiring, and connectors is recommended. Testing the ignition coil and related components with a multimeter can help pinpoint the problem.

4. What are the repair options for resolving OBDII code P2331 related to the Ignition Coil 'K' Primary Control Circuit High in a Dodge?

- Repair options may include replacing the faulty ignition coil, repairing damaged wiring or connectors, or reprogramming the Engine Control Module (ECM) if necessary.

5. Can driving with OBDII code P2331 related to the Ignition Coil 'K' Primary Control Circuit High cause further damage to my Dodge?

- Continuing to drive with this issue can potentially lead to more severe engine problems, reduced fuel efficiency, and increased emissions. It is recommended to address the problem promptly.

6. Is it safe to clear the OBDII code P2331 related to the Ignition Coil 'K' Primary Control Circuit High in my Dodge without fixing the underlying issue?

- Clearing the code without addressing the root cause can temporarily turn off the Check Engine Light, but the problem will likely recur. It is best to diagnose and repair the issue to prevent further issues.

7. Can a DIY enthusiast with basic automotive knowledge fix OBDII code P2331 related to the Ignition Coil 'K' Primary Control Circuit High in a Dodge?

- Depending on the root cause, DIY enthusiasts may be able to replace the ignition coil or repair wiring issues. However, diagnosing complex electrical problems may require professional assistance.

8. How much does it typically cost to repair OBDII code P2331 in a Dodge related to the Ignition Coil 'K' Primary Control Circuit High?

- The cost of repair can vary depending on the cause of the issue, the labor rates in your area, and whether you choose OEM or aftermarket parts. Costs typically range from $100 to $300.

9. Are there any preventive maintenance tips to avoid encountering OBDII code P2331 related to the Ignition Coil 'K' Primary Control Circuit High in my Dodge?

- Regularly inspecting and maintaining the ignition system, including checking for damaged wiring and connectors, can help prevent issues that lead to code P2331. Replacing ignition coils at recommended intervals can also help prevent failures.

10. How long does it take to repair OBDII code P2331 related to the Ignition Coil 'K' Primary Control Circuit High in a Dodge?

- The repair time can vary based on the specific cause of the issue and the complexity of the repair. On average, it may take anywhere from 1 to 3 hours to diagnose and fix the problem.

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