Quote: I think those sensors would trip a an obdII code.
Did you scan it? Remember, it's very possible for OBDII to see an issue and not turn on the light. Some circuits/sensors need 2 consecutive trips with a fault to flag the light....however a code can still be in the PCM,it's called a pending code. Have it scanned for ALL codes and look closely at data. Any competent service center should be able to help you out.
P.S. Make sure they check for relevant TSB's while they have it.
