OBD-II Generic Error Code P0358: How to Fix It
Medium 30-60 minutes Medium Severity
Verified June 2026
- Error Code
- P0358
- Brand
- OBD-II Generic
- Product Type
- automotive
- Severity
- Medium
- DIY Difficulty
- Medium
- Estimated Fix Time
- 30-60 minutes
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Tools You'll Need
- Digital multimeter
- OBD2 scanner
- Socket set or wrenches (for coil bolt)
- Oscilloscope (optional)
- Safety gloves and glasses
How to Fix Error Code P0358
-
Safety First: Disconnect Battery
WARNING: Always disconnect the battery before working on ignition system components. -
Locate Ignition Coil H
-
Visually Inspect Coil and Wiring
-
Test Coil Primary Resistance
-
Test Power and Ground at Connector
-
Check PCM Control Signal
-
Replace Faulty Ignition Coil
-
Clear Codes and Test Drive
Parts You May Need
Ignition coil (coil H/8)
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Ignition coil (coil H/8)
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Ignition coil (coil H/8)
Check Price on Amazon
Ignition coil (coil H/8)
Check Price on Amazon
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When to Call a Professional
If you have tested the coil, wiring, and power/ground but the code persists, the issue may be a faulty PCM (engine computer). A professional mechanic can diagnose and reprogram or replace the PCM.Frequently Asked Questions
What does error code P0358 mean?
P0358 indicates a problem in the primary circuit of ignition coil H (coil 8). This can cause misfires and should be fixed promptly.
Can I drive with a P0358 code?
It is not recommended. Driving with a misfire can damage the catalytic converter and cause poor performance.
Is P0358 the same as a bad ignition coil?
Often yes, but it can also be caused by wiring issues, a bad PCM, or a blown fuse. Diagnosis is required.
How much does it cost to fix P0358?
DIY cost: $30-$80 for a new ignition coil. Professional repair: $100-$250 including labor.
Do I need to replace all coils at once?
No, but if one coil failed, others may be old. Consider replacing the faulty one and inspecting the rest.