I had 12 re-cals during a four hour drive from suburban Toronto to Detroit on 13 Jan 2012.

My ScanGauge logged a few new 'pending' codes as follows:

P0004; P00A9; P074C; U1A66; U1B52; U3900; C24B5 and B36B6.

Any ideas what some of these mean?

Thanks

Cheers

Mike