P0485
Cooling fan power/ground circuit malfunction
P0484
Fan current
P0483
Fan performance
P0482
Fan 3 control circuit
P0481
Fan 2 control circuit
P0480
Fan 1 control circuit
P047F
Exhaust pressure control valve - Stuck open
P047E
Exhaust pressure sensor B - circuit intermittent/erratic
P047D
Exhaust pressure sensor B - circuit high
P047B
Exhaust pressure sensor B - circuit range/performance