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Engine-Codes – Lincoln – P0351 Lincoln

P0351 Lincoln Code - Ignition Coil 1 Control Circuit

Quick Answer

The P0351 diagnostic trouble code (DTC) for Lincoln vehicles indicates a problem with the ignition coil 1 control circuit. Common causes include Faulty ignition coil: The ignition coil itself may be faulty and need to be replaced, Damaged wiring or connectors: Issues with the wiring or connectors associated with the ignition coil 1 control circuit can lead to the P0351 code, PCM issues: Problems with the Powertrain Control Module can also trigger this code. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

What it means
P0351 Lincoln indicates Ignition Coil 1 Control Circuit.
Common causes
Common causes include Faulty ignition coil: The ignition coil itself may be faulty and need to be replaced, Damaged wiring or connectors: Issues with the wiring or connectors associated with the ignition coil 1 control circuit can lead to the P0351 code, PCM issues: Problems with the Powertrain Control Module can also trigger this code.
Severity
Moderate - service should be scheduled soon.
Can I drive?
The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
What is this?
Table of contents Created and updated by William Orellana on Sep 12, 2024
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Code P0351 Lincoln Description

The P0351 diagnostic trouble code (DTC) for Lincoln vehicles indicates a problem with the ignition coil 1 control circuit. The ignition coil is a crucial component in the ignition system of a vehicle, responsible for converting the low voltage from the battery into the high voltage needed to ignite the fuel-air mixture in the engine cylinders. Ignition coil 1 refers to the specific coil that is associated with cylinder 1 in the engine.

OBDII Code P0351 Lincoln - Ignition Coil 1 Control Circuit
P0351 Lincoln Code - Ignition Coil 1 Control Circuit

Common Causes of P0351 Lincoln

  1. Faulty ignition coil: The ignition coil itself may be faulty and need to be replaced.
  2. Damaged wiring or connectors: Issues with the wiring or connectors associated with the ignition coil 1 control circuit can lead to the P0351 code.
  3. PCM issues: Problems with the Powertrain Control Module can also trigger this code.
  4. Spark plug issues: Worn or damaged spark plugs can put added strain on the ignition coil, potentially leading to a malfunction.
  5. Environmental factors: Exposure to moisture, heat, or corrosive materials can also contribute to ignition coil issues.

Symptoms of P0351 Lincoln

  1. Engine misfires: One of the most common symptoms associated with a faulty ignition coil is engine misfires, which can result in rough idling, hesitation, or a lack of power.
  2. Illuminated check engine light: The PCM will detect the issue with the ignition coil control circuit and trigger the check engine light to alert the driver to a problem.
  3. Decreased fuel efficiency: A malfunctioning ignition coil can lead to incomplete combustion in the engine, resulting in decreased fuel efficiency.
  4. Difficulty starting the engine: If the ignition coil is not functioning properly, it may lead to difficulty starting the engine or the engine not starting at all.

How to Fix P0351 Lincoln

  1. Diagnose the issue: Use a diagnostic scan tool to confirm the P0351 code and identify the root cause of the problem.
  2. Inspect the ignition coil: Check the ignition coil for any signs of damage or wear. Replace the coil if necessary.
  3. Check wiring and connectors: Inspect the wiring and connectors associated with the ignition coil 1 control circuit for any damage or corrosion. Repair or replace as needed.
  4. Test the PCM: If all other components check out, the issue may lie with the PCM. Test the PCM to determine if it needs to be repaired or replaced.
  5. Clear the code: After making the necessary repairs, use the diagnostic scan tool to clear the P0351 code from the PCM's memory.

Cost to Fix P0351 Lincoln

The cost of repairing the ignition coil 1 control circuit issue can vary depending on the specific cause of the problem and the labor rates at the auto repair shop. On average, the cost of replacing an ignition coil can range from $100 to $300, including parts and labor. However, if additional components need to be replaced or if the PCM needs to be reprogrammed or replaced, the cost can increase. It's recommended to check with local auto repair shops for more accurate pricing based on the specific circumstances of your Lincoln vehicle.

When is the Code Detected?

Each ignition circuit is continuously monitored by the Powertrain Control Module (PCM). The test fails when the PCM does not receive a valid pulse signal from the ignition coil.

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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.

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