AutoCodes – Lincoln – P2303 Lincoln

P2303 Lincoln Code - Ignition Coil 'B' 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 'B', Ignition Coil 'B' harness is open or shorted, Ignition Coil 'B' 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
P2303 Lincoln indicates Ignition Coil 'B' Primary Control Circuit Low.
Common causes
Common causes include Faulty Ignition Coil 'B', Ignition Coil 'B' harness is open or shorted, Ignition Coil 'B' 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 1,682
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 P2303 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 P2303 code sets when the PCM detects a short to voltage in the circuit.
OBDII Code P2303 Lincoln - Ignition Coil 'B' Primary Control Circuit Low - AutoCodes.com
P2303 Lincoln Code - Ignition Coil 'B' Primary Control Circuit Low

What are the Possible Causes of the DTC P2303 Lincoln?

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

How to Fix the DTC P2303 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 P2303 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.

Need more information about the P2303 Lincoln code?

Need more information on how to fix the P2303 Lincoln code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P2303 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 P2303 Lincoln Code

1. What are the common symptoms of OBDII code P2303 in a Lincoln related to the Ignition Coil 'B' Primary Control Circuit Low?

- Common symptoms include engine misfires, rough idling, poor fuel efficiency, and potential stalling.

2. What are the possible causes of OBDII code P2303 in a Lincoln indicating the Ignition Coil 'B' Primary Control Circuit Low?

- Possible causes include a faulty ignition coil, damaged wiring or connectors, a defective Engine Control Module (ECM), or a disrupted power supply to the ignition coil.

3. How can I diagnose the OBDII code P2303 in a Lincoln for the Ignition Coil 'B' Primary Control Circuit Low?

- To diagnose this issue, you can use a scan tool to check for the specific trouble code, visually inspect the ignition coil and its connections for any visible damage, and perform circuit tests to identify any electrical faults.

4. What are the repair options for resolving OBDII code P2303 in a Lincoln linked to the Ignition Coil 'B' Primary Control Circuit Low?

- Repair options include replacing the faulty ignition coil, repairing or replacing damaged wiring or connectors, resetting the ECM, or addressing any power supply issues to the ignition coil.

5. Is it safe to continue driving a Lincoln with OBDII code P2303 for the Ignition Coil 'B' Primary Control Circuit Low?

- It is not recommended to drive the vehicle with this issue as it can lead to further engine damage and potential safety hazards. It's best to address the problem promptly.

6. Can a DIY enthusiast fix OBDII code P2303 in a Lincoln related to the Ignition Coil 'B' Primary Control Circuit Low?

- Depending on your mechanical skills and knowledge, some DIY enthusiasts may be able to address this issue by following repair guides and using the necessary tools. However, professional assistance is advised for accurate diagnosis and repair.

7. How much does it typically cost to repair OBDII code P2303 in a Lincoln for the Ignition Coil 'B' Primary Control Circuit Low?

- The cost of repair can vary based on the specific issue causing the code, the labor rates in your area, and whether you choose to replace parts yourself or have a mechanic do it. It's recommended to obtain quotes from different sources.

8. Are there any preventive measures to avoid OBDII code P2303 in a Lincoln associated with the Ignition Coil 'B' Primary Control Circuit Low?

- Regular maintenance, such as checking the ignition system components, ensuring proper wiring connections, and addressing any warning signs promptly, can help prevent issues leading to this trouble code.

9. Can weather conditions or driving habits contribute to triggering OBDII code P2303 in a Lincoln for the Ignition Coil 'B' Primary Control Circuit Low?

- Extreme weather conditions, such as excessive heat or moisture, can sometimes affect the ignition system and contribute to triggering this code. Additionally, aggressive driving habits may put more strain on ignition components.

10. How long does it typically take to repair OBDII code P2303 in a Lincoln related to the Ignition Coil 'B' Primary Control Circuit Low?

- The repair time can vary depending on the exact cause of the code, the availability of parts, and the expertise of the person performing the repair. It can range from a few hours to a day in more complex cases.

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