P0355: Ignition Coil E Primary/Secondary Circuit Malfunction
Can you still drive? Not recommended. A misfiring cylinder sends unburned fuel to the catalytic converter, which can overheat and fail, resulting in a costly repair.
What Does P0355 Mean?
Code P0355 indicates that the ECM has detected a fault in the primary or secondary circuit of ignition coil E, which typically corresponds to cylinder 5. The coil may not be producing adequate spark voltage, leading to a misfire on that cylinder.
Need to read your codes?
An OBD-II scanner lets you read and clear diagnostic trouble codes from your vehicle's computer. Most scanners work with any car made after 1996.
Browse OBD-II Scanners on AmazonCommon Causes
- Failed ignition coil on cylinder 5
- Damaged coil connector or wiring
- Corroded coil boot
- Faulty ECM coil driver
- Carbon tracking on spark plug or coil
Symptoms
- Check engine light on
- Misfire on cylinder 5
- Rough idle
- Loss of power
- Increased fuel consumption
Diagnostic Steps
- 1Inspect coil E connector for damage or corrosion
- 2Measure coil primary and secondary resistance
- 3Swap coil E with another cylinder to see if code follows
- 4Check for spark at cylinder 5 using a spark tester
- 5Inspect spark plug boot for carbon tracking or cracks
Recommended Parts & Tools
ignition coil
spark plug set
dielectric grease
Estimated Repair Cost
| Type | Estimated Cost |
|---|---|
| Total Repair Cost Range | $50 - $300 |
Get a Personalized AI Diagnostic Report
Get a detailed AI diagnosis for code P0355 specific to your vehicle. Includes step-by-step repair instructions, exact parts needed, and a cost breakdown tailored to your make and model.
Chat with AI About P0355Commonly Affected Vehicles
Related Recalls
Frequently Asked Questions
What does ignition coil E refer to?
Coil E typically corresponds to cylinder 5 in the engine's firing order. The letter designation follows the cylinder sequence (A=1, B=2, C=3, D=4, E=5).
How often should ignition coils be replaced?
Ignition coils don't have a specific replacement interval but typically last 80,000-100,000 miles. Replace them when they fail or when spark plugs are changed as preventive maintenance.
Can a bad spark plug damage an ignition coil?
Yes, a worn spark plug with a wide gap forces the coil to produce higher voltage, which can overheat and eventually destroy the coil.
Community Fix Reports
Community reports are user-submitted and not verified by Auto AI Buddy. Results may vary.
Related Codes
Affiliate Disclosure: This page contains affiliate links. If you purchase products through these links, we may earn a small commission at no additional cost to you. This helps us maintain this free resource. We only recommend products we believe will help you diagnose and repair your vehicle. Prices shown are estimates and may vary.