P0357 Audi Code - Ignition Coil 7 Primary/Secondary Circuit Malfunction
Quick Answer
The ignition system on the vehicle uses individual ignition coils for each cylinder. Common causes include Faulty Ignition Coil 7, Ignition Coil 7 harness is open or shorted, Ignition Coil 7 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
- P0357 Audi indicates Ignition Coil 7 Primary/Secondary Circuit Malfunction.
- Common causes
- Common causes include Faulty Ignition Coil 7, Ignition Coil 7 harness is open or shorted, Ignition Coil 7 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.
Code P0357 Audi Description
What are the Possible Causes of the DTC P0357 Audi?
- Faulty Ignition Coil 7
- Ignition Coil 7 harness is open or shorted
- Ignition Coil 7 circuit poor electrical connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC P0357 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 P0357 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.
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Frequently Asked Questions about P0357 Audi Code
1. What does the OBDII code P0357 mean for an Audi?
P0357 indicates a malfunction in the ignition coil 7 primary or secondary circuit, meaning there is an issue with the coil responsible for cylinder 7.
2. What are the symptoms of code P0357 in an Audi?
Common symptoms include engine misfires, rough idling, reduced power, poor fuel economy, and the Check Engine Light being illuminated.
3. What causes the P0357 code to appear?
The most common causes are a faulty ignition coil, damaged or corroded wiring to the ignition coil, a bad spark plug, or a malfunctioning engine control unit (ECU).
4. Can I drive my Audi with a P0357 code?
It’s not recommended to drive with this code, as engine misfires can cause further damage to the catalytic converter or other components.
5. How do I diagnose the P0357 code on my Audi?
Start by inspecting the ignition coil and its wiring for damage or corrosion, test the coil for proper resistance, and check the spark plug for wear or fouling.
6. How can I fix the P0357 code in an Audi?
Repairs may include replacing the ignition coil for cylinder 7, repairing damaged wiring, replacing the spark plug, or reprogramming the ECU if necessary.
7. How much does it cost to fix the P0357 code on an Audi?
The repair cost varies. Replacing an ignition coil typically costs $150–$300, while spark plug replacement may cost $100–$200. Wiring repairs or ECU work could be more expensive.
8. Can a faulty ignition coil cause long-term damage if not fixed?
Yes, a faulty ignition coil can cause prolonged misfires, which may damage the catalytic converter or lead to further engine issues.
9. Is the P0357 code specific to Audi vehicles?
No, the P0357 code is a generic OBDII code that can appear on any vehicle, but its specific symptoms and causes may vary depending on the make and model.
10. Will clearing the P0357 code fix the issue on my Audi?
Clearing the code will turn off the Check Engine Light temporarily, but the underlying issue must be resolved to prevent the code from returning.
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