P0433
Heated Catalyst Efficiency Below Threshold Bank 2
Generic code
Auxiliary Emissions Control
Medium severity
Moderate repair
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What P0433 means
- The fault code P0433 is triggered when there is an issue with the heated catalyst system efficiency
Possible symptoms
- Check Engine Light (CEL) illuminated
- Decreased engine performance or power
- Poor fuel efficiency
- Strong smell of rotten eggs (sulfur) from the exhaust
Possible causes
- Faulty catalytic converter in bank 2
- Oxygen (O2) sensor malfunction in bank 2
- Exhaust leak or damaged exhaust system components in bank 2
- Engine misfire or running rich condition in bank 2
- Faulty engine control module (ECM)
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
- Inspect and replace the faulty catalytic converter in bank 2, if necessary
- Test and replace the malfunctioning oxygen (O2) sensor in bank 2, if necessary
- Inspect and repair any exhaust leaks or damaged exhaust system components in bank 2
- Address and fix any engine misfire or running rich condition in bank 2
- Test and replace the engine control module (ECM) if it is determined to be faulty
Free on OBD DashX
P0433 on OBD DashX
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