AutoCodes – Audi – P0355 Audi

P0355 Audi Code - Ignition Coil 5 Primary/Secondary Circuit

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 Audi indicates Ignition Coil 5 Primary/Secondary 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 7,810

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 P0355 Audi 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 Audi - Ignition Coil 5 Primary/Secondary Circuit - AutoCodes.com — P0355 Audi Code - Ignition Coil 5 Primary/Secondary Circuit

What does this mean?

What are the Possible Causes of the DTC P0355 Audi?

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 Audi?

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 Audi 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 Audi code?

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

Need Help with the Code?

Get the P0355 Audi 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 Audi Code

1. What are the common symptoms of OBDII code P0355 related to Ignition Coil 5 Primary/Secondary Circuit in an Audi?

- Common symptoms include engine misfires, rough idling, loss of power, and a noticeable decrease in fuel efficiency.

2. What are the possible causes of OBDII code P0355 in an Audi?

- Possible causes include a faulty ignition coil, damaged wiring or connectors in the ignition coil circuit, or issues with the Engine Control Module (ECM).

3. How can I diagnose the issue causing OBDII code P0355 in my Audi?

- Diagnosis involves using a scan tool to read the code, checking the ignition coil and related components for physical damage, and testing the wiring and connectors for continuity and proper voltage.

4. Can I continue driving my Audi with OBDII code P0355 present?

- It is not recommended to drive your Audi with this code active, as it can lead to further engine damage and potentially unsafe driving conditions.

5. How do I repair OBDII code P0355 related to Ignition Coil 5 Primary/Secondary Circuit in my Audi?

- The repair typically involves replacing the faulty ignition coil, repairing or replacing damaged wiring or connectors, and clearing the code with a scan tool.

6. Are there any maintenance tips to prevent OBDII code P0355 from occurring in my Audi?

- Regular maintenance, such as replacing ignition coils as recommended by the manufacturer, can help prevent issues that lead to this code.

7. Can a DIY enthusiast repair OBDII code P0355 in an Audi, or should it be done by a professional mechanic?

- Depending on your skill level and access to tools, replacing the ignition coil or repairing wiring may be possible as a DIY project. However, if you are unsure, it is recommended to seek the help of a professional mechanic.

8. Is OBDII code P0355 specific to a certain Audi model or year?

- OBDII code P0355 can occur in various Audi models and years that are equipped with OBDII systems and ignition coils.

9. Will resetting the ECU clear OBDII code P0355 from my Audi's system?

- Resetting the Engine Control Unit (ECU) may temporarily clear the code, but if the underlying issue is not addressed, the code is likely to reappear.

10. How long does it take to repair OBDII code P0355 in an Audi at a repair shop?

- The repair time can vary depending on the exact cause of the code, but it typically takes a professional mechanic 1-2 hours to diagnose and repair the issue.