2019 Lexus RX 350 been chasing and Evap leak for a while, small and large leak codes are popping up. I have been clearing codes after trying fixes and before going on trips. The low engine power light has come on twice but only while the large and small evaporator leak codes are present on the ecu. Not sure if the Evap leak has anything to do with the low engine power light coming on.

 

What fixes have you tried? Did you try replacing the gas cap? I would go with an OEM cap if you do.

 

I have replaced fuel cap along with mechanic replacing my replacement. Had a spot where a rodent chewed on a vent line by the fuel tank had the mechanic repair and still getting the Evap codes. I am not too concerned with the Evap issues as I am with the low engine power light coming on.

 

Anything throwing EVAP codes with actual drivability issues, I would lean towards a purge valve issue.

 

has you mechanic done a smoke test?

 

yes two different mechanics replaced the purge valve so it’s been replaced twice

 

I was told by my latest mechanic he has done smoke tests. First one has cap and second re repaired the vent line rodent repair

 

Again at this point, I don’t really care about the evap leak, but I am concerned with getting the check engine light with the low engine power light.I’m wanting to know if by having the evap leak tripped on the ECU is it more likely to come up with a check engine low engine power light?