Hi all,
Can someone help me out with some codes: ABS 311,312,313,314,322,323 and 324.
The ABS light does go off and on at times, but I was wondering if some of the codes are related to the wheel sensors. Thanks.

97 850

Thanks guys! I certainly know more about this now then I did earlier. I guess the logical thing would be to check out the wheel sensors and connections first and see what's going on there. After that, I guess it's up to Vitor!

usually wheel sensors errors come from the control module itself...I would be willing to bet that getting Victor to rebuild it will make the other codes go away too.
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1998 S70 T5 Emarald Green Metallic (125K), 2004 V70 2.5T Ruby Red (45K), Previous Owner of Black '94 850 Turbo Wagon (Sold at 140K and miss her). My cars have been running so well lately they've got me worried.

All the ABS control units (Installed on 96 and newer 850, 70 series and S80 models) will eventually fail after they reach 65,000 miles or 5 years. The average is 85,000 miles and/or 6 years for failures.
The erratic ABS light and/or no trouble codes is an indication of a defective ABS unit.
A dealer will charge from $60.0 to $120.00 to diagnose the problem and about 95% of the cases the mechanic will recommend to replace the ABS control unit.

Here's more information on this issue and a replacement alternative.
Vitor's Volvo ABS website

311-314 are the wheel sensors-- open circuit or short circuit.
322-324 are also the sensors, except above 25mph.

Klaus
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(V♂LV♂s 1995 854T, 1998 V70R)