Full System Code Reader?
I have a couple of code readers but they only seem to access engine functions. Is there a source to read all codes? I.e. air bag faults. Any companies that let you use theirs or will check for all cod...
Forum Discussion
donn0128 wrote:
That is because your plugging into the ODB port which is only reading the ECM (engine control module). To read other codes you need to read the BCM.
It depends on the vehicle, and I suspect the code reader as to which codes you can read through the OBDII port. On at least one of my vehicles, I can read many non ECM codes through the OBDII port. Scanguage is one such device that in addition to giving mileage etc. readouts will also alert you to many pending codes as well as any "thrown" codes. Scanguage will also let you clear many codes as well.
However, resetting (clearing) the codes is also not always possible through the OBDport. On one of my vehicles, the airbag is one such code that can't be reset through the OBDII port, but needs another device or SW to reset.
However, go to your local auto store, often they can at least read out the code for you.
