AutoCodes – Pontiac – P0355 Pontiac

P0355 Pontiac Code - Ignition Coil 5 Control Circuit

Quick Answer

The ignition system on this engine uses ignition coils with integrated power transistors. Common causes include Faulty Ignition Coil 5, Ignition Coil 5 harness is open or shorted, Ignition Coil 5 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: P0355 Pontiac indicates Ignition Coil 5 Control Circuit.
Common causes: Common causes include Faulty Ignition Coil 5, Ignition Coil 5 harness is open or shorted, Ignition Coil 5 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 3,825

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 17, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0355 Pontiac 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 P0355 Pontiac - Ignition Coil 5 Control Circuit - AutoCodes.com — P0355 Pontiac Code - Ignition Coil 5 Control Circuit

What does this mean?

What are the Possible Causes of the DTC P0355 Pontiac?

Faulty Ignition Coil 5
Ignition Coil 5 harness is open or shorted
Ignition Coil 5 circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P0355 Pontiac?

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 P0355 Pontiac 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 P0355 Pontiac code?

Need more information on how to fix the P0355 Pontiac code? Get Access to Factory Service Manuals

Need Help with the 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 P0355 Pontiac Code

1. What are symptoms of a P0355 OBDII code on a Pontiac related to Ignition Coil 5 Control Circuit?

- Common symptoms include engine misfires, rough idling, poor fuel economy, and potential stalling.

2. What are possible causes of the P0355 OBDII code on a Pontiac?

- The code may be triggered by a faulty ignition coil, damaged wiring or connectors, a defective PCM, or issues with the spark plug.

3. How can I diagnose the cause of a P0355 OBDII code on my Pontiac?

- You can use a multimeter to test the resistance of the ignition coil, check the wiring and connectors for damage, and inspect the spark plug for wear or fouling.

4. Can I continue to drive my Pontiac with a P0355 OBDII code?

- It is not recommended to drive with this code as it can lead to further engine damage and potential safety hazards.

5. How can I repair a P0355 OBDII code on my Pontiac?

- Repair options include replacing the faulty ignition coil, repairing damaged wiring or connectors, and clearing the code with an OBDII scanner.

6. Are there any preventive measures to avoid a P0355 OBDII code on my Pontiac?

- Regular maintenance such as checking and replacing spark plugs, inspecting ignition components, and keeping up with tune-ups can help prevent this code.

7. Can a DIY enthusiast fix a P0355 OBDII code on a Pontiac?

- Depending on your skill level and access to tools, you may be able to diagnose and repair this code yourself. However, professional help is recommended for complex issues.

8. How much does it typically cost to repair a P0355 OBDII code on a Pontiac?

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

9. Will resetting the OBDII code make it go away permanently?

- Resetting the code may clear it temporarily, but if the underlying issue is not addressed, the code is likely to reappear.

10. What should I do if the P0355 OBDII code persists after repairs on my Pontiac?

- If the code persists, it is recommended to recheck the repairs, verify the integrity of the components, and consider seeking professional assistance for further diagnosis.