2008 Ford Expedition 4WDFACTORY OEM SERVICE PROCEDURE

Vehicle Dynamic Systems DTCS

ABS MODULE DIAGNOSTIC TROUBLE CODE (DTC) LIST

DTC Description Source Perform Test
B1483 Brake Pedal Input Circuit Failure ABS Module Go to Pinpoint Test A .
B1676 Battery Pack Voltage Out of Range ABS Module Go to Pinpoint Test B .
B2900 VIN Mismatch ABS Module Go to Pinpoint Test E .
C1095 ABS Hydraulic Pump Motor Circuit Failure ABS Module Go to Pinpoint Test C .
C1145 Wheel Speed Sensor RF Input Circuit Failure ABS Module Go to Pinpoint Test D .
C1155 Wheel Speed Sensor LF Input Circuit Failure ABS Module Go to Pinpoint Test D .
C1165 Wheel Speed Sensor RR Input Circuit Failure ABS Module Go to Pinpoint Test D .
C1175 Wheel Speed Sensor LR Input Circuit Failure ABS Module Go to Pinpoint Test D .
C1233 Wheel Speed LF Input Signal Missing ABS Module Go to Pinpoint Test K .
C1234 Wheel Speed RF Input Signal Missing ABS Module Go to Pinpoint Test K .
C1235 Wheel Speed RR Input Signal Missing ABS Module Go to Pinpoint Test K .
C1236 Wheel Speed LR Input Signal Missing ABS Module Go to Pinpoint Test K .
C1277 Steering Wheel Angle 1 and 2 Circuit Failure ABS Module Go to Pinpoint Test F .
C1278 Steering Wheel Angle 1 and 2 Signal Faulted ABS Module Go to Pinpoint Test F .
C1279 Yaw Rate Sensor Circuit Failure ABS Module Go to Pinpoint Test G .
C1280 Yaw Rate Sensor Signal Fault ABS Module Go to Pinpoint Test G .
C1281 Lateral Accelerometer Circuit Failure ABS Module Go to Pinpoint Test G .
C1282 Lateral Accelerometer Signal Fault ABS Module Go to Pinpoint Test G .
C1285 Booster Solenoid Circuit Failure ABS Module Go to Pinpoint Test H .
C1287 Booster Pedal Force Switch Circuit Failure ABS Module Go to Pinpoint Test I .
C1470 TCSa Function Disabled (brake fluid temperature is above a pre-set limit) ABS Module ALLOW the brake fluid time to cool. CLEAR the DTC. TEST DRIVE the vehicle and VERIFY ABS operation.
C1516 Roll Rate Sensor Signal Fault ABS Module Go to Pinpoint Test G .
C1517 Roll Rate Sensor Circuit Failure ABS Module Go to Pinpoint Test G .
C1963 Stability Assist Inhibit Warning ABS Module
NOTE: This DTC will not clear until the vehicle has been driven above 48 km/h (30 mph) with input from the steering wheel rotation sensor.
Go to Pinpoint Test F .
C1996 Active Yaw and/or Roll Control Disabled ABS Module Go to Pinpoint Test J .
C2769 - vehicles with Roll Stability Control (RSC®) Longitudinal Acceleration Sensor Electrical Failure (sensor cluster fault) ABS Module Go to Pinpoint Test G .
C2770 - vehicles with RSC® Longitudinal Acceleration Sensor Plausibility Failure (sensor cluster fault) ABS Module Go to Pinpoint Test G .
C2777 Sensor Cluster Bus Failure ABS Module Go to Pinpoint Test G .
C2778 Sensor Cluster Power Supply Failure ABS Module Go to Pinpoint Test G .
U1901 CAN Network #2 Communication Bus Fault ABS Module Go to Pinpoint Test G .
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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