AutoCodes – Ford – P0354 1998 Ford F150

P0354 1998 Ford F150 Code - Ignition Coil 'D' Primary/Secondary Circuit

Quick Answer

The ignition system on the vehicle uses individual ignition coils for each cylinder. Common causes include Faulty Ignition Coil 4, Ignition Coil 4 harness is open or shorted, Ignition Coil 4 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: P0354 1998 Ford F150 indicates Ignition Coil 'D' Primary/Secondary Circuit .
Common causes: Common causes include Faulty Ignition Coil 4, Ignition Coil 4 harness is open or shorted, Ignition Coil 4 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 5,162

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 14, 2020

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0354 1998 Ford F150 Description

The ignition system on the vehicle uses individual ignition coils for each cylinder. The Engine Control Module (ECM) controls each ignition coil operation. The ECM sends a ON/OFF signal to energize the ignition coil to create a spark at the spark plug when a spark is required at the cylinder.

OBDII Code P0354 1998 Ford F150 - Ignition Coil 'D' Primary/Secondary Circuit - AutoCodes.com — P0354 1998 Ford F150 Code - Ignition Coil 'D' Primary/Secondary Circuit

What does this mean?

What are the Possible Causes of the DTC P0354 1998 Ford F150?

Faulty Ignition Coil 4
Ignition Coil 4 harness is open or shorted
Ignition Coil 4 circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P0354 1998 Ford F150?

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 does this mean?

Code Tech Notes

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).

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0354 1998 Ford F150 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 P0354 1998 Ford F150 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 P0354 1998 Ford F150 Code

1. What are the common symptoms of OBDII code P0354 on a 1998 Ford F150?

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

2. What are the potential causes of OBDII code P0354 on a 1998 Ford F150?

- The primary causes are faulty ignition coil 'D', damaged wiring or connectors in the ignition coil circuit, or a problem with the Engine Control Module (ECM).

3. How can I diagnose the issue causing OBDII code P0354 on my 1998 Ford F150?

- You can use a multimeter to test the resistance of the ignition coil 'D', inspect the wiring and connectors for any damage, and perform a thorough visual inspection of the ignition system components.

4. Can a bad spark plug cause OBDII code P0354 on a 1998 Ford F150?

- While a bad spark plug can contribute to ignition issues, OBDII code P0354 specifically relates to problems in the ignition coil 'D' primary/secondary circuit.

5. What are some repair tips for resolving OBDII code P0354 on a 1998 Ford F150?

- Replace the faulty ignition coil 'D' if necessary, repair any damaged wiring or connectors, and clear the trouble code using an OBDII scanner.

6. Is it safe to continue driving with OBDII code P0354 on a 1998 Ford F150?

- It is not recommended to drive with this code, as it can lead to further engine damage and decreased performance. It's best to address the issue promptly.

7. How much does it typically cost to repair OBDII code P0354 on a 1998 Ford F150?

- The cost can vary depending on the exact cause of the issue, but replacing an ignition coil 'D' can range from $100 to $300, including parts and labor.

8. Can a DIY enthusiast fix OBDII code P0354 on a 1998 Ford F150?

- Yes, if you have experience working on automotive electrical systems, you may be able to diagnose and repair the issue yourself. However, it's recommended to consult a professional if you're unsure.

9. Will resetting the Check Engine light resolve OBDII code P0354 on a 1998 Ford F150?

- Simply resetting the light will not fix the underlying issue causing the trouble code. It's important to diagnose and address the root cause to prevent further problems.

10. How long does it take to repair OBDII code P0354 on a 1998 Ford F150?

- The repair time can vary depending on the complexity of the issue and the availability of parts. In general, it may take a few hours to a full day to complete the repair.