Join Date: Jan 2007
Location: Southern Ca
Car: 00 OB 07 OBXT
Feedback Score: 0 reviews
well first off let me say i understand the frustration troubleshooting evap codes, i'm doing it on my truck right now and these types of codes are without a doubt the most annoying thing i've dealt with on a car and i've dealt with a lot.
second i would say, don't blame the car. it's just doing what it's supposed to, telling you there is a problem. if you want to blame someone, blame the engineers who decided to have the vehicle throw specific codes even though the parts the codes reference have nothing to do with the problem.
here's an example;
my codes p0102 maf low voltage - did all the required tests for the wiring and pcm all check out- solution- replace maf ........ replaced maf - same code
p0443 purge solenoid low voltage did tests- replaced solenoid- same code
p0449 vent valve- low voltage - this is getting ridiculous ......... but wait..... my relocation bracket for my egr valve that's hidden under the blower is loose .... waiting on gaskets to see if that's my issue ................
basically to troubleshoot these issues you have to have complete understanding of how the parts all interact and the effect one can have on another. i know a few dealer mechanics and they actually do a lot of times just throw parts at these things because many times it's easier to just eliminate them as a problem, they also have access to these parts and don't have to pay if it doesn't work.
i'll let you know if the gaskets cure my problem, if so that may give you an idea of what to look for beyond the evap system.
sorry about the book, fortunately i can do my own testing and repairs so i save a few bucks, many can't and it's frustrating. you rely on a shop to not screw you and then ......... you get screwed. try to find a stand up shop that will guarantee their work, if you come back with the same code two days later they should admit they didn't fix the issue and credit you the cost toward the actual solution.