ABS - Four Wheel Antilock Brakes (4WAL)
Code Description21 Right Front Wheel Speed Sensor or Circuit Open
22 Right Front Wheel Speed Signal
23 Erratic Right Front Speed Signal
25 Left Front Wheel Speed Sensor or Circuit Open
26 Missing Left Front Speed signal
27 Erratic Left Front Wheel Speed Sensor
29 Simultaneous Drop-Out of Front Wheel Speed Sensors
35 Open or Grounded Rear Speed Signal Circuit
36 Missing Rear Speed signal
37 Erratic Rear Speed Signal
38 Wheel Speed Error
41 - 45 Control Valves
65 - 66 Open or Shorted Pump Motor Relay
67 Open Motor Circuit or Shorted BPMV Output
68 Locked Motor or Shorted Motor Circuit
71 - 74 Memory Errors
81 Brake Switch Circuit Shorted or Open
86 Shorted Antilock Indicator Lamp
88 Shorted Brake Warning Lamp