AutoCodes – Ford – P0351 1997 Ford F150

P0351 1997 Ford F150 Code - Ignition Coil A Primary/Secondary Circuit Malfunction

Quick Answer

The ignition system on the vehicle uses individual ignition coils for each cylinder. Common causes include Faulty Ignition Coil 1, Ignition Coil 1 harness is open or shorted, Ignition Coil 1 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: P0351 1997 Ford F150 indicates Ignition Coil A Primary/Secondary Circuit Malfunction .
Common causes: Common causes include Faulty Ignition Coil 1, Ignition Coil 1 harness is open or shorted, Ignition Coil 1 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 5,889

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
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0351 1997 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 P0351 1997 Ford F150 - Ignition Coil A Primary/Secondary Circuit Malfunction - AutoCodes.com — P0351 1997 Ford F150 Code - Ignition Coil A Primary/Secondary Circuit Malfunction

What does this mean?

What are the Possible Causes of the DTC P0351 1997 Ford F150?

Faulty Ignition Coil 1
Ignition Coil 1 harness is open or shorted
Ignition Coil 1 circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P0351 1997 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 P0351 1997 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 P0351 1997 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 P0351 1997 Ford F150 Code

1. What are the common symptoms of OBDII code P0351 in a 1997 Ford F150?

The common symptoms of code P0351 include engine misfires, rough idling, loss of power, and potentially a decrease in fuel efficiency.

2. What does the OBDII code P0351 for a 1997 Ford F150 indicate?

OBDII code P0351 indicates an ignition coil A primary/secondary circuit malfunction in the 1997 Ford F150.

3. What are the possible causes of OBDII code P0351 in a 1997 Ford F150?

Possible causes of code P0351 include a faulty ignition coil, damaged wiring or connectors in the ignition coil circuit, or issues with the powertrain control module (PCM).

4. How can I diagnose the OBDII code P0351 in a 1997 Ford F150?

To diagnose code P0351, you can use an OBDII scanner to read the code, visually inspect the ignition coil and its connections, and perform a continuity test on the coil and wiring.

5. What are the repair options for fixing OBDII code P0351 in a 1997 Ford F150?

Repair options for code P0351 may include replacing the faulty ignition coil, repairing damaged wiring or connectors, or resetting the PCM after fixing the issue.

6. Can driving with OBDII code P0351 in a 1997 Ford F150 cause further damage?

Continuing to drive with code P0351 can potentially lead to more severe engine issues, such as permanent damage to the catalytic converter or other components.

7. Is it safe to reset the OBDII code P0351 in a 1997 Ford F150 without addressing the underlying issue?

Resetting the code without fixing the underlying problem may temporarily turn off the check engine light, but the issue causing the code will persist and could worsen over time.

8. How much does it typically cost to repair OBDII code P0351 in a 1997 Ford F150?

The cost of repairing code P0351 can vary depending on the specific issue, but it may range from $100 to $300, including parts and labor.

9. Can a DIY enthusiast repair OBDII code P0351 in a 1997 Ford F150?

DIY enthusiasts with automotive experience and the right tools can attempt to repair code P0351 by replacing the ignition coil or fixing wiring issues.

10. How often does OBDII code P0351 occur in a 1997 Ford F150?

Code P0351 can occur sporadically or frequently, depending on the underlying cause and the vehicle's maintenance history. Regular maintenance can help prevent this code from appearing.