AutoCodes – Isuzu – P0354 Isuzu

P0354 Isuzu Code - Ignition Coil 4 Control 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 Isuzu indicates Ignition Coil 4 Control 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 5,294

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
Cost to Diagnose
FAQs
Comments
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Code P0354 Isuzu 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 Isuzu - Ignition Coil 4 Control Circuit - AutoCodes.com — P0354 Isuzu Code - Ignition Coil 4 Control Circuit

What does this mean?

What are the Possible Causes of the DTC P0354 Isuzu?

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 Isuzu?

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 P0354 Isuzu 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 Isuzu code?

Need more information on how to fix the P0354 Isuzu code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0354 Isuzu 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 P0354 Isuzu Code

1. What does the OBDII code P0354 for Isuzu mean?

The code P0354 indicates a problem with the ignition coil 4 control circuit in the Isuzu vehicle.

2. What are the common symptoms of OBDII code P0354 in an Isuzu?

Common symptoms of code P0354 may include engine misfires, rough idling, loss of power, and difficulty starting the vehicle.

3. What are the possible causes of the OBDII code P0354 in an Isuzu?

Possible causes of code P0354 include a faulty ignition coil, damaged wiring or connectors in the ignition coil circuit, or issues with the engine control module (ECM).

4. How can I diagnose the OBDII code P0354 in my Isuzu?

Diagnosing code P0354 involves inspecting the ignition coil, checking the wiring and connectors for damage, and using a scan tool to monitor the ignition coil circuit for proper operation.

5. Can a DIY enthusiast repair the OBDII code P0354 in an Isuzu?

DIY enthusiasts with automotive repair experience can attempt to repair code P0354 by replacing the faulty ignition coil, repairing damaged wiring, or addressing any ECM issues.

6. Is it safe to continue driving with the OBDII code P0354 illuminated in an Isuzu?

It is not recommended to drive with the OBDII code P0354 active, as it can lead to further engine damage and potential safety hazards. It is best to address the issue promptly.

7. What are some tips for preventing the recurrence of OBDII code P0354 in an Isuzu?

To prevent the recurrence of code P0354, regularly inspect and maintain the ignition system, including the ignition coils, wiring, and connectors, and address any issues promptly.

8. Can a bad spark plug cause the OBDII code P0354 to trigger in an Isuzu?

While a faulty spark plug can contribute to ignition issues, code P0354 specifically relates to the control circuit of ignition coil 4 in an Isuzu.

9. Will resetting the check engine light resolve the OBDII code P0354 in an Isuzu?

Resetting the check engine light may temporarily clear the code, but if the underlying issue causing code P0354 is not addressed, the light is likely to come back on.

10. How much can I expect to pay for professional repairs related to the OBDII code P0354 in an Isuzu?

The cost of professional repairs for code P0354 can vary depending on the exact cause of the issue and the labor rates in your area. It's best to consult with a mechanic for an accurate estimate.