Reflashing ECU and OBD2 readiness
May 11, 2010, 03:03 PM
#6
(benderrodriguez: he's referring to the use of spark plug anti-foulers to dilute the exhaust gas enough that your rear O2 doesn't throw a code.)Reflashing the ECU on an IX may wipe the OBD-II readiness code (fuel trims get wiped on a reflash on IX ECUs; I have no idea if anything else is reset as well, ie. if it's a full memory wipe, or just a few regions). On an VIII, however, I don't recall readiness states ever being reset with reflashes.
That all being said: if you're in a position to reflash the ECU, why not simply take control of the readiness codes and set them to whatever you want?
(This doesn't help you with the visual inspection, unfortunately. Have you considered having an exhaust shop weld the outer shielding of a cat onto a test pipe for you, as a permanent solution?)
May 12, 2010, 04:54 AM
#7
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Why use hardware to solve a software issue? (benderrodriguez: he's referring to the use of spark plug anti-foulers to dilute the exhaust gas enough that your rear O2 doesn't throw a code.)
Reflashing the ECU on an IX may wipe the OBD-II readiness code (fuel trims get wiped on a reflash on IX ECUs; I have no idea if anything else is reset as well, ie. if it's a full memory wipe, or just a few regions). On an VIII, however, I don't recall readiness states ever being reset with reflashes.
That all being said: if you're in a position to reflash the ECU, why not simply take control of the readiness codes and set them to whatever you want?
(This doesn't help you with the visual inspection, unfortunately. Have you considered having an exhaust shop weld the outer shielding of a cat onto a test pipe for you, as a permanent solution?)
(benderrodriguez: he's referring to the use of spark plug anti-foulers to dilute the exhaust gas enough that your rear O2 doesn't throw a code.)Reflashing the ECU on an IX may wipe the OBD-II readiness code (fuel trims get wiped on a reflash on IX ECUs; I have no idea if anything else is reset as well, ie. if it's a full memory wipe, or just a few regions). On an VIII, however, I don't recall readiness states ever being reset with reflashes.
That all being said: if you're in a position to reflash the ECU, why not simply take control of the readiness codes and set them to whatever you want?
(This doesn't help you with the visual inspection, unfortunately. Have you considered having an exhaust shop weld the outer shielding of a cat onto a test pipe for you, as a permanent solution?)
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