AutoCodes – Chevrolet – P0351 Chevrolet

P0351 Chevrolet Code - Ignition Coil 1 Control Circuit

Quick Answer

The ignition system on this engine uses ignition coils with integrated power transistors. 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 Chevrolet indicates Ignition Coil 1 Control Circuit.
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 40,599

How popular is this code, among other codes? Medium

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 16, 2022

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0351 Chevrolet 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 P0351 Chevrolet - Ignition Coil 1 Control Circuit - AutoCodes.com — P0351 Chevrolet Code - Ignition Coil 1 Control Circuit

What does this mean?

What are the Possible Causes of the DTC P0351 Chevrolet?

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 Chevrolet?

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 P0351 Chevrolet 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 Chevrolet code?

Need more information on how to fix the P0351 Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

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Information for Specific Chevrolet Models

P0351 2014 Chevrolet Silverado — Ignition Coil 1 Control Circuit
P0351 2015 Chevrolet Silverado — Ignition Coil 1 Control Circuit
P0351 2016 Chevrolet Silverado — Ignition Coil 1 Control Circuit
P0351 2017 Chevrolet Silverado — Ignition Coil 1 Control Circuit
P0351 2018 Chevrolet Silverado — Ignition Coil 1 Control Circuit

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 Chevrolet Code

1. What are common symptoms of OBDII code P0351 in a Chevrolet related to the Ignition Coil 1 Control Circuit?

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

2. What are the possible causes of OBDII code P0351 in a Chevrolet indicating an issue with Ignition Coil 1?

- Possible causes include a faulty ignition coil, damaged wiring or connectors, a defective PCM, or issues with the ignition system.

3. How can I diagnose the cause of OBDII code P0351 in my Chevrolet related to Ignition Coil 1?

- Diagnosis involves checking the ignition coil for proper functioning, inspecting wiring and connectors for damage, and using a multimeter to test electrical continuity.

4. Can a bad spark plug cause OBDII code P0351 in a Chevrolet?

- Yes, a bad spark plug can cause the ignition coil to malfunction, triggering OBDII code P0351 related to Ignition Coil 1.

5. What is the recommended repair for OBDII code P0351 in a Chevrolet due to Ignition Coil 1 Control Circuit issues?

- The recommended repair is to replace the faulty ignition coil, repair any damaged wiring or connectors, and clear the trouble codes from the PCM.

6. Are there any tips for preventing OBDII code P0351 in a Chevrolet related to Ignition Coil 1 from recurring?

- Regular maintenance, such as replacing spark plugs and ignition coils at recommended intervals, can help prevent the recurrence of this code.

7. Can driving with OBDII code P0351 in a Chevrolet indicating Ignition Coil 1 issues cause further damage to the vehicle?

- Driving with this code can lead to decreased engine performance, reduced fuel efficiency, and potential damage to the catalytic converter if left unresolved for an extended period.

8. Is it safe to continue driving my Chevrolet with OBDII code P0351 related to Ignition Coil 1 Control Circuit problems?

- It is not recommended to drive the vehicle with this code, as it can result in further damage to the engine and other components.

9. How much does it typically cost to repair OBDII code P0351 in a Chevrolet caused by Ignition Coil 1 Control Circuit issues?

- The cost of repair can vary depending on the specific cause of the issue, but it may range from $100 to $300 for parts and labor.

10. Can I reset OBDII code P0351 in my Chevrolet related to Ignition Coil 1 without fixing the underlying issue?

- While you can clear the code using an OBDII scanner, it is crucial to address the root cause of the problem to prevent further issues and ensure proper vehicle operation.