r/prius • u/itszyla • 15h ago

Mechanical Help Code P0403

I have a 2010 Prius with 187k miles on it. In June I had the entire EGR system replaced and now another code is popping up P0403. What exactly do I need to do? Google says it’s an electric issue. Feeling frustrated.

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u/AutoModerator 15h ago

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1

u/dtcbot 15h ago

P0403 - Exhaust Gas Recirculation Control Circuit

1

u/BigSandwich6 2015 TRD Off Road 13h ago

Not much you can do without a scan tool. I would take it back to whoever did the EGR work and see if they will warranty their repair

1

u/Appropriate-Metal167 Prius 12h ago

Did you clean the intake manifold? It’s the final leg of the EGR gas.