P2521
Air conditioning request A - circuit high
P2522
Air conditioning request B circuit
P251E
Power take off engine shutdown - circuit low
P251F
Power take off engine shutdown - circuit high
P2520
Air conditioning request A - circuit low
P251C
Power take off enable switch - Circuit high
P251D
Power take off engine shutdown - circuit open
P251A
Power take off enable switch - Open circuit
P251B
Power take off enable switch - Circuit low
P2517
Air conditioning refrigerant pressure sensor B - circuit low