No bus data from climate control module means the PCI data bus isn't seeing any info from the climate control panel. All the modules (computers) in the van communicate over two wires called the PCI multiplex data bus. It acts just like the data bus on your home computer. The module in the climate control panel isn't communicating. Could be as simple as a loose connection on the panel. A common problem is overheated and melted connectors on the panel. Might try removing it and checking the connector.
Your mileage is off because they just changed your BCM and neglected to reprogram the correct mileage figure into it. The BCM controls the mileage figure on your odometer.
Why was the BCM?PCM? replaced? Can you expand on "acting crazy". What model year?
Last edited by RIP; 11-13-2009 at 12:36 AM.
******** We took the time to answer your post. Please give us some time and post the fix. You'll help hundreds. ********
**** Follow all prescribed safety procedures before attempting any repairs. If in doubt, refer to a maintenance manual. ****
96 Gr Caravan LE 3.8, 214K miles
07 Fusion / 06 RAV 4 / 06 Accord