Hybspec

P0301T

Wysoki

Cylinder 1 misfire (Toyota VVT-i)

OBD-II (EN): Cylinder 1 Misfire Detected

Code P0301T — Cylinder 1 misfire (Toyota VVT-i). Symptoms: jerking. Possible cause: worn spark plugs (iridium — every 100k km). Professional diagnosis recommended.

Symptoms

Jerking, flashing check engine light, rough running

Possible causes

Worn spark plugs (iridium — every 100k km), faulty coil, intake manifold gasket leak (plastic — 1ZZ/2ZZ)

Affected systems

Silnik spalinowyUkład zapłonowy

Related codes

Universal version

This code has a universal OBD-II form:

P0301Wypadanie zapłonów — cylinder 1

Does code P0301T require professional diagnostics?

The code alone is not enough. To find the cause, you need to read live data, check freeze frame conditions, and compare with vehicle behavior. Book a diagnostic session.