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Retrieving DTCS

Connect Tech 2 scan tool to DLC located under steering column. Access 4WAL brake DTCs. Repair DTCs in the order they appear. See 4WAL DIAGNOSTIC TROUBLE CODE (DTC)  table for diagnosis. Before diagnosing DTC(s), perform DIAGNOSTIC SYSTEM CHECK .

4WAL DIAGNOSTIC TROUBLE CODE (DTC)

DTC (1)Definition
C0221  Right Front Wheel Speed Sensor Circuit Open
C0222  Right Front Wheel Speed Sensor Signal Missing
C0223  Right Front Wheel Speed Sensor Signal Erratic
C0225  Left Front Wheel Speed Sensor Circuit Open
C0226  Left Front Wheel Speed Sensor Signal Missing
C0227  Left Front Wheel Speed Sensor Signal Erratic
C0229  Drop Out Of Front Wheel Speed Sensor Signals.
C0235  Rear Speed Sensor Signal Circuit Open Or Grounded (Gasoline)
C0235  Rear Speed Sensor Signal Circuit Open Or Grounded (Diesel)
C0236  Rear Speed Sensor Signal Missing (Gasoline)
C0236  Rear Speed Sensor Signal Missing (Diesel)
C0237  Rear Speed Sensor Signal Erratic (Gasoline)
C0237  Rear Speed Sensor Signal Erratic (Diesel)
C0238  Wheel Speed Signal Malfunction
C0241  Right Front Isolation Solenoid Circuit Open
C0242  Right Front Dump Solenoid Circuit Open
C0243  Right Front Isolation Solenoid Circuit Shorted
C0244  Right Front Dump Solenoid Circuit Shorted
C0245  Left Front Isolation Solenoid Circuit Open
C0246  Left Front Dump Solenoid Circuit Open
C0247  Left Front Isolation Solenoid Circuit Shorted
C0248  Left Front Dump Solenoid Circuit Shorted
C0251  Rear Isolation Solenoid Circuit Shorted
C0252  Rear Dump Solenoid Circuit Open
C0253  Rear Isolation Solenoid Circuit Shorted (Except "L" & "M" Series)
C0254  Rear Dump Solenoid Circuit Shorted
C0265  Pump Motor Relay Circuit Open
C0266  Pump Motor Relay Circuit Shorted
C0267  Pump Motor Circuit Open/Shorted (Except "L" & "M" Series)
C0267  Pump Motor Circuit Open/Shorted ("L" & "M" Series)
C0268  Pump Motor Circuit Locked/Shorted (Except "L" & "M" Series)
C0268  Pump Motor Circuit Locked/Shorted ("L" & "M" Series)
C0269  Excessive Dump/Isolation Time
C0271  EBCM Internal Fault
C0272  EBCM Internal Fault
C0273  EBCM Internal Fault
C0274  Excessive Dump/Isolation Time
C0281  Stoplight Switch Always Closed Or Shorted
C0286  ABS Indicator Light Circuit Shorted To Battery Voltage
C0288  Brake Warning Light Circuit Shorted To Battery Voltage
(1) Always perform DIAGNOSTIC SYSTEM CHECK before performing DTC tests.