P0424
Heated Catalyst Temperature Below Threshold Bank 1
Generic code
Auxiliary Emissions Control
Medium severity
Moderate repair
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What P0424 means
- The fault code P0424 indicates that the catalyst system efficiency for bank 1 is below the threshold level. This may result in increased emissions, decreased fuel efficiency, or other engine performance issues.
Possible symptoms
- Illuminated check engine light
Possible causes
- Failed catalytic converter
- Malfunctioning oxygen sensor
- Exhaust system leaks upstram of catalytic converter
- Faulty engine control module (ECM) or programming
- Fuel mixture issues
Related parts
- Catalytic Converter: A catalytic converter is a device that converts toxic gases and pollutants to less harmful pollutants. Problems lead to harmful emissions out of limit, rotten egg smell from exhaust & reduced speed
Possible solutions
- Repair/Replace the catalytic converter
- Replace any malfunctioning oxygen sensors
- Repair any exhaust system leaks upstream of the catalytic converter
- Check and reprogram the engine control module (ECM) as necessary
Free on OBD DashX
P0424 on OBD DashX
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