mercredi 16 juillet 2014

Getting rid of this super-annoying reoccuring P0444 (freeze frame data)

Cliff notes:

-2002 325i with 83,xxx miles

-I have a recurring P0444 trouble code, no other codes

-Get it about once a month for 2 days, then drive the rest of the month with no codes

-Scares the hell out of me because I recently eliminated some more troublesome codes with repairs (vacuum leak, cylinder misfires)

-Never want to see the SES light of doom ever again

-Doesn't affect performance or anything, does not stall like many others with P0444

-I also need to be able to pass emissions in the state of WA



Data from OBDII is P0444 - Evaporative Emission Purge Control Valve Circuit Open and the freeze frame data is:



Fuel system status: Open-loop due to insufficient engine temperature

Calculated load value: 10.59%

Engine coolant temp: 185 F

Short term fuel % trim - bank 1: 0%

Long term fuel % trim - bank 1: 0%

Short term fuel % trim - bank 2: 0%

Long term fuel % trim - bank 2: 0%

Engine RPM: 1054

Vehicle speed: 0 mph



I know the gas cap often fixes this one, but for me that's not usually the case. Sometimes I'll just start the engine and get this code. How can I get rid of this crap? Most people in the forum have 2-3 other codes along with this one, not solely P0444. What could cause just this one? Hopefully the freeze frame data is helpful in some way, I have an ELM OBDII and the OBD Fusion iPhone app which is amazing.



I have also seen this http://ift.tt/W9DcQG and this:



[youtube]1YjonHGuIa4[/youtube]




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