Can a faulty ignition coil trigger a Check Engine Light CEL in a Prius?

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Can a faulty ignition coil trigger a Check Engine Light CEL in a Prius?

Yes, a bad ignition coil can trigger CEL codes such as:

P0300 – Random/Multiple Cylinder Misfire
P0301–P0304 – Misfires in specific cylinders
P0351–P0354 – Ignition coil circuit issues
Discussing how to use an OBD-II scanner to read these codes can assist with diagnostics.

Zarnish asked on 13 Feb 2025 16:07:53 pm

1 Answer

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Car Mechanic Expert - on 13 Feb 2025 16:26:57 pm

Yes, a bad ignition coil can trigger several OBD-II codes related to misfires:

P0300 – Random/Multiple Cylinder Misfire
P0301–P0304 – Misfires in specific cylinders 1–4
P0351–P0354 – Ignition Coil Circuit Issues

Using an OBD-II scanner can help diagnose the exact problem by reading the codes, allowing Prius owners to address the issue before it escalates.