Hope someone can help. So I keep getting a p0444 code, and after investigation with a scanner, I find that my short term fuel trim value on bank 1 is around +17% and Bank 2 is around 3%. I have noticed the error is apparent after filling up, as the values go back to normal a day after filling up. Now I have removed the hose work to check if the valve is producing vacuum, but nothing at all. I have checked for air leaks but all good. I have access to a multimeter, is there any voltage check I can do on the valve itself? Also any other ideas?
iffy100
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Notice the description says “circuit open”? This is a common fault code triggered by the DME when it sees the voltage drop across the evap purge valve being too high. It can be dirty/oxidized electrical contacts at the valve or DME, an aged valve that needs replacing, an aftermarket valve whose coil resistance is out of spec, etc.
For me, P0444 was fixed with replacing the purge valve. The code is pretty clear that the unit has failed
I used a Febi part and it's been fine so far
I used a Febi part and it's been fine so far
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