P0350

Q: What does OBD2 code P0350 mean?

P0350 means: Ignition Coil Primary/Secondary Circuit Malfunction. A general ignition coil circuit fault has been detected, not isolated to a specific cylinder.

Ignition Coil Primary/Secondary Circuit Malfunction

A general ignition coil circuit fault has been detected, not isolated to a specific cylinder.

SeverityCritical

CategoryIgnition

Est. Repair Cost$100-$300

Code TypePowertrain

DIY RepairYes

⚡ Common Causes

›Faulty ignition coil
›Damaged coil wiring
›Corroded connector
›Failed ignition control module

⚠️ Symptoms

›Check engine light
›Misfire
›Rough idle
›Poor acceleration

✅ How to Fix — Step by Step

Step 1:Inspect coil wiring and connectors
Step 2:Test coil primary/secondary resistance
Step 3:Replace faulty coil

🔧 Diagnostic Tools Required

✔OBD-II Diagnostic Scanner
✔Digital Multimeter
✔Basic Hand Tools
✔Flashlight
✔Vehicle Service Manual

Using the correct diagnostic tools helps identify the root cause of P0350 before replacing parts unnecessarily. Always confirm the fault using live data and manufacturer-recommended diagnostic procedures.

💡 Pro Tip: This general code often appears alongside a cylinder-specific misfire code - check for a paired code to pinpoint which coil is at fault.

Repair Cost Estimate

Full Repair Estimate

$100-$300

DIY Possible?

YES

Severity

Critical

Frequently Asked Questions

What does OBD2 code P0350 mean?+

P0350 stands for Ignition Coil Primary/Secondary Circuit Malfunction. A general ignition coil circuit fault has been detected, not isolated to a specific cylinder.

What causes code P0350?+

Faulty ignition coil; Damaged coil wiring; Corroded connector; Failed ignition control module

How do I fix code P0350?+

Inspect coil wiring and connectors; Test coil primary/secondary resistance; Replace faulty coil

How much does it cost to fix P0350?+

Estimated repair cost for P0350 is $100-$300.

Is P0350 DIY-friendly?+

Yes — P0350 is generally DIY-friendly with basic tools.