P1891
Transfer case contact plate ground return - open circuit
P1890
Four-wheel drive mode select return input circuit failure
P188F
Transfer case contact plate ground return - short circuit to…
P188A
Differential oil temperature is too high/too low
P1889
Oil pressure pump performance
P1888
Differential oil temperature sensor circuit failure
P1887
Four-wheel drive control solenoid circuit failure
P1886
Four-wheel drive initialization failure
P1885
Transfer case disengaged solenoid - short circuit to ground
P1882
Engine coolant level switch - circuit short to ground