Has anyone encountered this one. My 98 S70 runs just fine. It has an IPD upgrade ECU which was installed a bit more than 3 years ago. Just last week the car failed DMV inspection because, when the inspector plugged in the OBD II reader, he could not get any readout. The ECU apparently signaled that it was not "ready" to provide a readout. The car previously passed inspection with this ECU. A trip to the Volvo dealer (and a few $)confirmed this fault. So now, what to do? All suggestions cheerfully accepted.
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