Code result
P0424
Heated Catalyst Temperature Below Threshold
Moderate severity
What it means
The heated catalyst on bank 1 does not reach its target temperature within the expected time. Common causes are a defective heater element, supply fault, or a damaged temperature sensor.
Is it safe to drive?
Use caution
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical.
Most likely causes
Heater element open or shorted
highOne of the most commonly reported causes for this code — check this first.
Catalyst temperature sensor failed
mediumA plausible cause — test and verify before replacing parts.
Related help
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