AutoCodes – Chrysler – P2309 Chrysler

P2309 Chrysler Code - Ignition Coil 'D' 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 'D', Ignition Coil 'D' harness is open or shorted, Ignition Coil 'D' 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: P2309 Chrysler indicates Ignition Coil 'D' Primary Control Circuit Low.
Common causes: Common causes include Faulty Ignition Coil 'D', Ignition Coil 'D' harness is open or shorted, Ignition Coil 'D' 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 1,405

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 P2309 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 P2309 code sets when the PCM detects a short to voltage in the circuit.

OBDII Code P2309 Chrysler - Ignition Coil 'D' Primary Control Circuit Low - AutoCodes.com — P2309 Chrysler Code - Ignition Coil 'D' Primary Control Circuit Low

What does this mean?

What are the Possible Causes of the DTC P2309 Chrysler?

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

How to Fix the DTC P2309 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 P2309 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?

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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 P2309 Chrysler Code

1. What are the common symptoms of OBDII code P2309 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 P2309 indicate in a Chrysler vehicle?

- The code indicates a problem with the ignition coil 'D' primary control circuit being lower than normal.

3. What are the possible causes of OBDII code P2309 in a Chrysler vehicle?

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

4. How can I diagnose the root cause of OBDII code P2309 in my Chrysler vehicle?

- You can start by checking the ignition coil, inspecting the wiring and connectors for damage, and testing the ECM and ignition system components for proper functionality.

5. Can driving with an active OBDII code P2309 cause further damage to my Chrysler vehicle?

- Continuing to drive with this code may lead to more severe issues like catalytic converter damage or permanent engine damage, so it's best to address the problem promptly.

6. Is it safe to continue driving my Chrysler vehicle with OBDII code P2309 if it's running fine?

- It's not recommended to continue driving, as the underlying issue can worsen over time, potentially leading to performance issues or more significant damage.

7. How can I repair OBDII code P2309 in my Chrysler vehicle?

- Repair involves identifying and addressing the root cause, which may include replacing the faulty ignition coil, repairing damaged wiring, or reprogramming the ECM.

8. Are there any preventative measures to avoid OBDII code P2309 in my Chrysler vehicle?

- Regular maintenance, such as inspecting and replacing ignition components as recommended, can help prevent issues that trigger this code.

9. Can a DIY enthusiast with basic automotive knowledge fix OBDII code P2309 in a Chrysler vehicle?

- Depending on the root cause, a DIY enthusiast may be able to address the issue by following repair guides, but complex electrical or ECM issues may require professional assistance.

10. How much can I expect to pay for repairs related to OBDII code P2309 in my Chrysler vehicle?

- The cost of repairs can vary based on the specific issue and labor rates, but it's advisable to budget for ignition coil replacement, wiring repairs, or ECM reprogramming if needed.