What are the common causes of P0362?

An open in the coil L primary control wire. A failed ignition coil L. A corroded or loose coil L connector pin. A bad coil L driver in the ECM. Low supply voltage at coil L.

Swap coil L with a known good coil and recheck the code. Inspect the coil L connector and primary wire for damage. Test the coil L primary control circuit for an open or short. Check coil L supply voltage and ground under load. Replace ignition coil L if the circuit and voltage test good. Clear the code and retest.

P0362

Ignition Coil L Primary Control Circuit/Open

System: Ignition and misfire (P code)
Lamp: Check Engine Light
Category: Powertrain - Ignition

What it means

P0362 means Ignition Coil L Primary Control Circuit/Open.

Check these first

An open in the coil L primary control wire
A failed ignition coil L
A corroded or loose coil L connector pin
A bad coil L driver in the ECM
Low supply voltage at coil L

What to do next

Swap coil L with a known good coil and recheck the code
Inspect the coil L connector and primary wire for damage
Test the coil L primary control circuit for an open or short
Check coil L supply voltage and ground under load
Replace ignition coil L if the circuit and voltage test good
Clear the code and retest

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Updated

Generic SAE J2012 definition. Last updated 2026-10-10.