Code result
P200E
Catalyst System Over Temperature
High severity
What it means
A temperature sensor in the exhaust catalyst on bank 1 reports a value above the safe operating limit. Sustained over-temperature can sinter the precious-metal washcoat and destroy conversion efficiency.
Is it safe to drive?
No — stop driving
This code can put the vehicle into limp or reduced-power mode. Avoid extended driving and have the vehicle diagnosed promptly.
Most likely causes
Persistent misfire dumps unburned fuel into the cat
highOne of the most commonly reported causes for this code — check this first.
Sustained rich mixture from leaking injector or fuel pressure regulator
mediumA plausible cause — test and verify before replacing parts.
Catalyst temperature sensor drifts high
lowLess common, but worth ruling out after the more likely causes.
Related help
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