P1364 – Ignition Coil Circuit (Toyota)

Description

The ECM detected a malfunction in the ignition coil circuit affecting spark generation and engine performance.

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Symptoms

Engine misfire
Rough idle
Poor acceleration
Hard starting
Check engine light

Causes

Faulty ignition coil
Open or shorted wiring
Connector corrosion
ECM ignition driver fault

Diagnosis

Test ignition coil
Inspect wiring
Check connectors
Measure resistance
Scan for related codes

Repair

Replace ignition coil
Repair wiring
Clean connectors
Replace ECM if required