Hello all. I just replaced the evap leak detection pump with a Bosch unit. I replaced due to the P1481 code I was getting. Now I'm getting a pending code of P0441. It appears its due to no flow or a blocked loop? Now sure if I was suppose to do something else during replacement. I simply removed the old one and replaced with new. I restarted the engine checked again, P1481 was gone. Restarted again it came back. I reset the codes and will let it go through the cycle.

No service engine soon light. I guess due to only one code.

I previously replaced all O2 sensors and MAF.

Any suggestions? Should I have taken additional steps?

THANKS Ed.

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