AutoCodes – Lincoln – P2309 Lincoln

P2309 Lincoln 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 Lincoln 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 1,394

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

What does this mean?

What are the Possible Causes of the DTC P2309 Lincoln?

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 Lincoln?

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 Lincoln 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 P2309 Lincoln 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 P2309 Lincoln Code

1. What are common symptoms of OBDII code P2309 in a Lincoln related to the Ignition Coil 'D' Primary Control Circuit Low?

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

2. What are the possible causes of OBDII code P2309 in a Lincoln?

- The code P2309 in a Lincoln can be triggered by issues such as a faulty ignition coil, damaged wiring or connectors, a defective PCM, or a poor electrical connection.

3. How can I diagnose the cause of OBDII code P2309 in my Lincoln?

- To diagnose OBDII code P2309, you can perform a visual inspection of the ignition coil and its wiring, use a multimeter to check for continuity and resistance, and conduct a thorough scan of the vehicle's electrical system.

4. What steps can I take to repair OBDII code P2309 in my Lincoln?

- Repair options for code P2309 may include replacing the faulty ignition coil, repairing or replacing damaged wiring, ensuring proper electrical connections, and resetting the fault code with an OBDII scanner.

5. Can driving with OBDII code P2309 in a Lincoln cause further damage?

- Continuing to drive with OBDII code P2309 may lead to more severe engine issues, increased fuel consumption, and potential damage to other components such as the catalytic converter.

6. Is it safe to clear OBDII code P2309 in a Lincoln with an OBDII scanner?

- Clearing the code with an OBDII scanner is safe after repairing the underlying issue causing code P2309 in a Lincoln. However, if the problem persists, the code will likely return.

7. How much does it typically cost to repair OBDII code P2309 in a Lincoln?

- The cost of repairing OBDII code P2309 in a Lincoln can vary depending on the specific issue, but it may range from $100 to $300 for parts and labor.

8. Can a DIY enthusiast fix OBDII code P2309 in a Lincoln?

- DIY enthusiasts with experience in automotive repair may be able to diagnose and repair OBDII code P2309 in a Lincoln. However, if unsure, it is recommended to seek professional help to avoid further damage.

9. Will OBDII code P2309 prevent my Lincoln from passing emissions tests?

- Yes, OBDII code P2309 can prevent your Lincoln from passing emissions tests due to increased emissions, engine performance issues, and an illuminated Check Engine Light.

10. How urgent is it to address OBDII code P2309 in a Lincoln?

- It is recommended to address OBDII code P2309 promptly in a Lincoln to prevent further engine damage, poor fuel efficiency, and potential safety hazards while driving.