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P0403

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P0403 OBD-II Trouble Code: Exhaust Gas Recirculation Circuit Malfunction
P0403 code definition Exhaust Gas Recirculation Circuit Malfunction What the P0403 code means P0403 is an OBD-II generic code that indicates that the engine control module (ECM) has detected the engine...

Related questions

Question
Does not go into gear. 2002 Dodge Stratus
Hello. Code P0403 is the trouble code for an issue with the vehicle's EGR circuit. The EGR, short for exhaust gas re circulation, circuit is an emissions system that is responsible for recirculating exhaust gases in order to reduce N0x...
Question
I have an intermittent misfire - 2002 Pontiac Grand Prix
Hi and thanks for contacting YourMechanic. The EGR can cause a misfire if it is stuck open when the engine is cold or running at a lower speed. The EGR replaces some of the air with burnt fuel to help...
Question
Getting a P0430 code on my Buick Century 3100.
Hi there. The code p0403 is for the EGR circuit that shows it has malfunctioned. The code p0430 is for the catalytic converter showing that its below threshold. Check the harness to the EGR and make sure that all of...

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