AutoCodes – Chrysler – P2321 Chrysler

P2321 Chrysler Code - Ignition Coil 'H' Primary Control Circuit Low

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 'H', Ignition Coil 'H' harness is open or shorted, Ignition Coil 'H' 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: P2321 Chrysler indicates Ignition Coil 'H' Primary Control Circuit Low.
Common causes: Common causes include Faulty Ignition Coil 'H', Ignition Coil 'H' harness is open or shorted, Ignition Coil 'H' 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.

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Code Popularity 1,230

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 14, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2321 Chrysler 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 P2321 code sets when the PCM detects a short to voltage in the circuit.

OBDII Code P2321 Chrysler - Ignition Coil 'H' Primary Control Circuit Low - AutoCodes.com — P2321 Chrysler Code - Ignition Coil 'H' Primary Control Circuit Low

What does this mean?

What are the Possible Causes of the DTC P2321 Chrysler?

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

How to Fix the DTC P2321 Chrysler?

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 P2321 Chrysler 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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Need Help with the Code?

Get the P2321 Chrysler code diagnosed by a professional: Find a repair shop in your area

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 P2321 Chrysler Code

1. What are the common symptoms of OBDII code P2321 in a Chrysler vehicle?

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

2. What does the OBDII code P2321 Chrysler indicate?

- The code indicates a problem with the Ignition Coil 'H' Primary Control Circuit, specifically a low voltage condition.

3. What are the potential causes of OBDII code P2321 in a Chrysler vehicle?

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

4. How can I diagnose the Ignition Coil 'H' Primary Control Circuit Low issue related to code P2321?

- Use a multimeter to test the resistance and continuity of the ignition coil, inspect the wiring and connectors for damage, and check for any loose connections in the circuit.

5. Can a bad spark plug cause OBDII code P2321 to appear in a Chrysler vehicle?

- While not a direct cause of the code, a faulty spark plug can contribute to ignition coil issues that may trigger code P2321.

6. How can I repair OBDII code P2321 related to the Ignition Coil 'H' Primary Control Circuit Low in my Chrysler?

- Repair options include replacing the faulty ignition coil, repairing damaged wiring or connectors, and resetting the ECM after addressing the issue.

7. Is it safe to continue driving with OBDII code P2321 present in a Chrysler?

- It is not recommended to drive with this code present, as it can lead to performance issues and potential damage to other components over time.

8. How do I clear OBDII code P2321 from the ECM in a Chrysler vehicle?

- You can clear the code using an OBDII scanner or by disconnecting the car's battery for a few minutes to reset the ECM.

9. Will code P2321 Chrysler reset itself after the issue is resolved?

- In some cases, the code may reset itself after a few successful drive cycles once the underlying issue with the Ignition Coil 'H' Primary Control Circuit is fixed.

10. Can a DIY enthusiast fix OBDII code P2321 in a Chrysler, or is professional help recommended?

- Depending on your skill level and access to tools, you may be able to address the issue yourself by following repair guides and procedures. However, if you are unsure or uncomfortable with the diagnosis and repair process, seeking professional help is recommended.