AutoCodes – Mazda – P0355 Mazda

P0355 Mazda Code - Ignition Coil Primary Circuit Fault Cylinder 5

Quick Answer

The ignition system on the vehicle uses individual ignition coils for each cylinder. 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 Mazda indicates Ignition Coil Primary Circuit Fault Cylinder 5.
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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 8,960

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
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P0355 Mazda 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 P0355 Mazda - Ignition Coil Primary Circuit Fault Cylinder 5 - AutoCodes.com — P0355 Mazda Code - Ignition Coil Primary Circuit Fault Cylinder 5

What does this mean?

What are the Possible Causes of the DTC P0355 Mazda?

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 Mazda?

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 Mazda 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 Mazda code?

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

Need Help with the Code?

Get the P0355 Mazda 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 P0355 Mazda Code

1. What does the OBDII code P0355 mean on a Mazda?

P0355 indicates a malfunction in the ignition coil primary circuit for cylinder 5, meaning the coil is not properly generating or transmitting the spark needed for combustion.

2. What are the common symptoms of code P0355 on a Mazda?

Symptoms include engine misfires, rough idling, reduced power, poor fuel efficiency, and potentially the Check Engine Light illuminating.

3. What causes the P0355 code on a Mazda?

Common causes include a faulty ignition coil, damaged wiring or connectors in the coil circuit, a malfunctioning PCM, or corrosion on electrical connections.

4. How do you diagnose the P0355 code on a Mazda?

Diagnosis involves inspecting the ignition coil, testing the coil's resistance, checking for damaged wiring or poor connections, and using a scan tool to monitor live data for cylinder 5.

5. Can I drive my Mazda with a P0355 code?

Driving with a P0355 code is not recommended, as it can lead to further engine damage, reduced performance, and increased emissions.

6. How do you fix the P0355 code on a Mazda?

Repairs may include replacing the faulty ignition coil, repairing or replacing damaged wiring, cleaning corroded connections, or reprogramming the PCM if necessary.

7. How much does it cost to fix a P0355 code on a Mazda?

Repair costs can range from $100 to $300, depending on whether you need to replace the ignition coil or repair wiring and connections.

8. Can a bad spark plug cause the P0355 code on a Mazda?

While a bad spark plug is not the direct cause, it can contribute to ignition problems. Itâ€™s worth inspecting and replacing the spark plug when troubleshooting.

9. Does the P0355 code affect only cylinder 5?

Yes, P0355 specifically refers to an issue in the ignition coil circuit for cylinder 5. Other cylinders will have different codes if similar issues occur.

10. How can I prevent the P0355 code from recurring?

Regular maintenance, including inspecting and replacing ignition coils, spark plugs, and wiring, as well as keeping electrical connections clean and secure, can help prevent P0355.