AutoCodes – GMC – P0354 2015 GMC Sierra

P0354 2015 GMC Sierra Code - Ignition Coil 4 Control Circuit

Quick Answer

The ignition system on this engine uses ignition coils with integrated power transistors. 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 2015 GMC Sierra 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 217

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 Mar 25, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0354 2015 GMC Sierra Description

The ignition system on this engine uses ignition coils with integrated power transistors. The Engine Control Module (ECM) controls the spark event for each cylinder through individual ignition coil control circuits. When the ECM commands the ignition control circuit On, electrical current flows through the primary winding of the ignition coil, creating a magnetic field. When a spark event is requested, the ECM commands the ignition control circuit Off, interrupting current flow through the primary winding. The collapsing magnetic field created by the primary winding induces a high voltage in the secondary winding, which is connected to the spark plugs. The Diagnostic Trouble Code (DTC) will be set when the control circuit commanded by the ECM state does not match the actual state.

OBDII Code P0354 2015 GMC Sierra - Ignition Coil 4 Control Circuit - AutoCodes.com — P0354 2015 GMC Sierra Code - Ignition Coil 4 Control Circuit

What does this mean?

What are the Possible Causes of the DTC P0354 2015 GMC Sierra?

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 2015 GMC Sierra?

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 2015 GMC Sierra 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 2015 GMC Sierra code?

Need more information on how to fix the P0354 2015 GMC Sierra code? Get Access to Factory Service Manuals

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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 2015 GMC Sierra Code

1. What does OBDII code P0354 for a 2015 GMC Sierra indicate?

- OBDII code P0354 specifically relates to the Ignition Coil 4 Control Circuit malfunction in a 2015 GMC Sierra.

2. What are the common symptoms of OBDII code P0354 in a GMC Sierra?

- Common symptoms of OBDII code P0354 in a GMC Sierra include rough idling, engine misfires, loss of power, and potential stalling.

3. What are the possible causes of OBDII code P0354 in a 2015 GMC Sierra?

- The possible causes of OBDII code P0354 in a 2015 GMC Sierra include a faulty ignition coil, damaged wiring or connectors, a defective Engine Control Module (ECM), or a poor electrical connection.

4. How can I diagnose the Ignition Coil 4 Control Circuit issue causing OBDII code P0354 in my GMC Sierra?

- To diagnose the issue causing OBDII code P0354 in your GMC Sierra, you can perform a visual inspection of the ignition coil and its wiring, test the coil for resistance, check for power and ground at the coil connector, and scan the ECM for additional fault codes.

5. Can I continue driving my GMC Sierra with OBDII code P0354 present?

- It is not recommended to continue driving your GMC Sierra with OBDII code P0354 present, as it can lead to further engine damage and potential safety hazards.

6. How can I repair OBDII code P0354 related to the Ignition Coil 4 Control Circuit in my 2015 GMC Sierra?

- The repair process for OBDII code P0354 in a 2015 GMC Sierra involves replacing the faulty ignition coil, repairing any damaged wiring or connectors, and clearing the fault code with a diagnostic scanner.

7. Is it possible to reset OBDII code P0354 in a GMC Sierra without fixing the underlying issue?

- While you can clear the OBDII code P0354 from your GMC Sierra's ECM using a diagnostic scanner, it is crucial to address the underlying issue causing the code to prevent further problems.

8. Are there any preventive maintenance tips to avoid OBDII code P0354 in a GMC Sierra?

- To prevent OBDII code P0354 in a GMC Sierra, you can follow a regular maintenance schedule, inspect the ignition system components periodically, and address any engine performance issues promptly.

9. Can a DIY enthusiast fix OBDII code P0354 on a 2015 GMC Sierra?

- A DIY enthusiast with automotive repair experience can potentially fix OBDII code P0354 on a 2015 GMC Sierra by following repair guides, using proper tools, and being cautious with electrical components.

10. How long does it typically take to repair OBDII code P0354 related to the Ignition Coil 4 Control Circuit in a GMC Sierra?

- The time required to repair OBDII code P0354 in a GMC Sierra can vary depending on the exact cause and the individual's repair skills, but it typically takes a few hours to a half-day for diagnosis and replacement.