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P0350 1999 Ford F150 Code - Ignition Coil Primary Secondary Circuit Malfunction

Quick Answer

The P0350 diagnostic trouble code (DTC) for a 1999 Ford F150 indicates an issue with the Ignition Coil Primary/Secondary Circuit. Common causes include Faulty ignition coil, Damaged wiring or connectors, Power supply issues to the ignition coil. 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
P0350 1999 Ford F150 indicates Ignition Coil Primary Secondary Circuit Malfunction .
Common causes
Common causes include Faulty ignition coil, Damaged wiring or connectors, Power supply issues to the ignition coil.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 17, 2024
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Code P0350 1999 Ford F150 Description

The P0350 diagnostic trouble code (DTC) for a 1999 Ford F150 indicates an issue with the Ignition Coil Primary/Secondary Circuit. This code is specifically related to a malfunction in the ignition coil, which is responsible for generating the high voltage needed to ignite the air-fuel mixture in the engine cylinders. The ignition coil plays a crucial role in the proper functioning of the ignition system, which in turn affects the engine's performance and overall operation.

OBDII Code P0350 1999 Ford F150 - Ignition Coil Primary Secondary Circuit Malfunction
P0350 1999 Ford F150 Code - Ignition Coil Primary Secondary Circuit Malfunction

Common Causes of P0350 1999 Ford F150

  1. Faulty ignition coil
  2. Damaged wiring or connectors
  3. Power supply issues to the ignition coil
  4. Problems with the engine control module (ECM)
  5. Corrosion or moisture in the ignition system components

Symptoms of P0350 1999 Ford F150

  1. Engine misfires
  2. Rough idling
  3. Decreased fuel efficiency
  4. Engine stalling
  5. Loss of power during acceleration

How to Fix P0350 1999 Ford F150

  1. Diagnose the specific ignition coil causing the issue using a scan tool and multimeter.
  2. Inspect the wiring and connectors for any damage or corrosion.
  3. Replace the faulty ignition coil if necessary.
  4. Test the power supply to the ignition coil and repair any issues.
  5. Clear the DTC and test drive the vehicle to ensure the problem has been resolved.

Cost to Fix P0350 1999 Ford F150

The typical repair costs for addressing an ignition coil primary/secondary circuit malfunction can range from $150 to $400, including parts and labor. However, the specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. It's advisable to check local rates for a more precise estimate. Keep in mind that rates in metropolitan areas or at dealerships may be higher, while independent shops often charge less.

What does this mean?

Tech Notes for P0350 1999 Ford F150

Each ignition primary circuit is continuously monitored. The test fails when the PCM does not receive a valid IDM pulse signal from the ignition module (integrated in PCM).

When is the Code Detected?

The test fails when the Engine Control Module (ECM) 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.

Frequently Asked Questions about P0350 1999 Ford F150 Code

1. What are the common symptoms of OBDII code P0350 on a 1999 Ford F150?

- Common symptoms include engine misfires, rough idling, loss of power, and difficulty starting the vehicle.

2. What are the possible causes of the Ignition Coil Primary/Secondary Circuit Malfunction in a 1999 Ford F150?

- Possible causes may include a faulty ignition coil, damaged wiring or connectors, a defective PCM (powertrain control module), or a blown fuse.

3. How can I diagnose the Ignition Coil Primary/Secondary Circuit Malfunction on my 1999 Ford F150?

- Diagnosis typically involves using a scan tool to read the OBDII code, inspecting the ignition coil and its connections, testing the coil for proper resistance, and checking the wiring for any damage.

4. Can I still drive my 1999 Ford F150 with OBDII code P0350?

- It is not recommended to drive the vehicle with a P0350 code, as it can lead to further engine damage and potential safety hazards. It is best to address the issue promptly.

5. How can I repair the Ignition Coil Primary/Secondary Circuit Malfunction on my 1999 Ford F150?

- Repair options may include replacing the faulty ignition coil, repairing or replacing damaged wiring or connectors, resetting the PCM, or addressing any other underlying issues causing the malfunction.

6. Are there any preventative maintenance tips to avoid OBDII code P0350 on a 1999 Ford F150?

- Regularly inspecting and servicing the ignition system, including the ignition coil, spark plugs, and wiring, can help prevent issues that may lead to the P0350 code.

7. Can a DIY enthusiast fix the Ignition Coil Primary/Secondary Circuit Malfunction on a 1999 Ford F150?

- Depending on the individual's skill level and access to tools, a DIY enthusiast may be able to diagnose and repair the issue. However, complex electrical issues may require professional assistance.

8. How much does it cost to repair OBDII code P0350 on a 1999 Ford F150?

- Repair costs can vary depending on the exact cause of the issue, labor rates in your area, and whether you choose to address the problem yourself or take it to a mechanic. Costs can range from $100 to $500 or more.

9. Will resetting the OBDII code P0350 on a 1999 Ford F150 make it go away permanently?

- Simply resetting the code may temporarily clear the error message, but if the underlying issue causing the P0350 code is not addressed, the code is likely to reappear.

10. Can a bad ignition coil cause other OBDII codes to appear on a 1999 Ford F150?

- Yes, a faulty ignition coil can lead to various other OBDII codes related to misfires, fuel delivery issues, and overall engine performance problems.

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