Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2006 Ford Expedition RWDFACTORY OEM SERVICE PROCEDURE
Vehicle Dynamic Systems DTCS
ANTI-LOCK BRAKE SYSTEM (ABS) MODULE DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description | Source | Perform Test |
|---|---|---|---|
| B1342 | ECU is Faulted | ABS Module |
NOTE:
If other DTCs are present, REPAIR them before installing a new component. CLEAR the DTCs. RETRIEVE the DTCs. If DTC B1342 is retrieved, INSTALL a new module. REFER to ANTI-LOCK BRAKE SYSTEM (ABS) MODULE
. REPEAT the self-test. |
| B1483 | Brake Pedal Input Circuit Failure | ABS Module | GO to PINPOINT TEST B . |
| B1676 | Battery Pack Voltage Out of Range | ABS Module | GO to PINPOINT TEST C . |
| B2477 | Module Configuration Failure | ABS Module | CONFIGURE the ABS module. REFER to MODULE CONFIGURATION . CLEAR the DTCs. REPEAT the self-test. If DTC B2477 is retrieved again, INSTALL a new ABS module. REFER to ANTI-LOCK BRAKE SYSTEM (ABS) MODULE . REPEAT the self-test. |
| B2734 | Pedal Travel Sensor Supply Error | ABS Module | GO to PINPOINT TEST M . |
| B2736 | Pedal Travel Sensor Circuit Fault | ABS Module | GO to PINPOINT TEST M . |
| B2737 | Pedal Travel Sensor Jammed Error | ABS Module | GO to PINPOINT TEST M . |
| B2738 | Pedal Travel Sensor Velocity Error | ABS Module | GO to PINPOINT TEST M . |
| B2740 | Pedal Travel Sensor Spike Error | ABS Module | GO to PINPOINT TEST M . |
| B2741 | Sensor Cluster Defective | ABS Module | FOLLOW the diagnostic tool directions for the calibration procedure. |
| B2900 | VIN Mismatch | ABS Module | VERIFY that the module has the correct as-built data. CHECK for correct powertrain control module (PCM) and ABS module configurations using the diagnostic tool. RECONFIGURE the component as necessary. FOLLOW the diagnostic tool directions for the ABS module configuration or REFER to MODULE CONFIGURATION for the PCM. CLEAR the DTC. REPEAT the self-test. |
| C1095 | ABS Hydraulic Pump Motor Circuit Failure | ABS Module | GO to PINPOINT TEST D . |
| C1145 | Speed Wheel Sensor RF Input Circuit Failure | ABS Module | GO to PINPOINT TEST E . |
| C1155 | Speed Wheel Sensor LF Input Circuit Failure | ABS Module | GO to PINPOINT TEST E . |
| C1165 | Speed Wheel Sensor RR Input Circuit Failure | ABS Module | GO to PINPOINT TEST E . |
| C1175 | Speed Wheel Sensor LR Input Circuit Failure | ABS Module | GO to PINPOINT TEST E . |
| C1233 | Speed Wheel LF Input Signal Missing | ABS Module | GO to PINPOINT TEST F . |
| C1234 | Speed Wheel RF Input Signal Missing | ABS Module | GO to PINPOINT TEST F . |
| C1235 | Speed Wheel RR Input Signal Missing | ABS Module | GO to PINPOINT TEST F . |
| C1236 | Speed Wheel LR Input Signal Missing | ABS Module | GO to PINPOINT TEST F . |
| C1277 | Steering Wheel Angle 1 and 2 Circuit Failure | ABS Module | GO to PINPOINT TEST G . |
| C1278 | Steering Wheel Angle 1 and 2 Signal Faulted | ABS Module | GO to PINPOINT TEST G . |
| C1279 | Yaw Rate Sensor Circuit Failure (Sensor Cluster Fault) | ABS Module |
NOTE:
When correctly installed, the electrical connector will be on the LH side of the vehicle. VERIFY that the stability control sensor cluster (accelerometer) is correctly installed.If the sensor is not correctly installed, REINSTALL the sensor.If the sensor is correctly installed, GO to PINPOINT TEST H
. |
| C1280 | Yaw Rate Sensor Signal Fault (Sensor Cluster Fault) | ABS Module |
NOTE:
When correctly installed, the electrical connector will be on the LH side of the vehicle. VERIFY that the stability control sensor cluster (accelerometer) is correctly installed.If the sensor is not correctly installed, REINSTALL the sensor.If the sensor is correctly installed, GO to PINPOINT TEST H
. |
| C1281 | Lateral Accelerometer Circuit Failure (Sensor Cluster Fault) | ABS Module |
NOTE:
When correctly installed, the electrical connector will be on the LH side of the vehicle. VERIFY that the stability control sensor cluster (accelerometer) is correctly installed.If the sensor is not correctly installed, REINSTALL the sensor.If the sensor is correctly installed, GO to PINPOINT TEST H
. |
| C1282 | Lateral Accelerometer Signal Fault (Sensor Cluster Fault) | ABS Module |
NOTE:
When correctly installed, the electrical connector will be on the LH side of the vehicle. VERIFY that the stability control sensor cluster (accelerometer) is correctly installed.If the sensor is not correctly installed, REINSTALL the sensor.If the sensor is correctly installed, GO to PINPOINT TEST H
. |
| C1285 | Booster Solenoid Circuit Failure | ABS Module | GO to PINPOINT TEST I . |
| C1287 | Booster Pedal Force Switch Circuit Failure | ABS Module | GO to PINPOINT TEST J . |
| C1288 | Pressure Sensor Main/Primary Input Circuit Failure | ABS Module | GO to PINPOINT TEST K . |
| C1440 (with stability assist) | Pressure Sensor Main/Primary Signal Faulted | ABS Module | GO to PINPOINT TEST K . |
| C1516 | Roll Rate Sensor Signal Fault (Sensor Cluster Fault) | ABS Module |
NOTE:
When correctly installed, the electrical connector will be on the LH side of the vehicle. VERIFY that the stability control sensor cluster (accelerometer) is correctly installed.If the sensor is not correctly installed, REINSTALL the sensor.If the sensor is correctly installed, GO to PINPOINT TEST H
. |
| C1517 | Roll Rate Sensor Circuit Failure (Sensor Cluster Fault) | ABS Module |
NOTE:
When correctly installed, the electrical connector will be on the LH side of the vehicle. VERIFY that the stability control sensor cluster (accelerometer) is correctly installed.If the sensor is not correctly installed, REINSTALL the sensor.If the sensor is correctly installed, GO to PINPOINT TEST L
. |
| C1730 | Reference Voltage Out of Range (+5V) | ABS Module | GO to PINPOINT TEST L . |
| C1805 | Mismatched PCM and/or ABS-TC Module | ABS Module | CHECK for correct PCM and ABS module configuration using the diagnostic tool. RECONFIGURE the component as necessary. FOLLOW the diagnostic tool directions for the ABS module configuration or REFER to ENGINE for the PCM. CLEAR the DTC. REPEAT the self-test. |
| C1963 | Stability Assist Inhibit Warning | ABS Module | REPAIR all other DTCs before repairing DTC C1963. INSPECT the steering wheel rotation sensor for damage and correct installation. REINSTALL or INSTALL new as necessary. If the sensor is OK, Go to PINPOINT TEST G . If the sensor tests OK, INSPECT the sensor cluster for damage and correct installation. REINSTALL or INSTALL new as necessary. If the sensor cluster is OK, GO to PINPOINT TEST H . |
| C1991 | Module Calibration Failure | ABS Module | Follow the diagnostic tool directions for the calibration procedure. |
| C1996 | Active Yaw and/or Roll Control Disabled | ABS Module | This DTC can be set if the ABS module system is activated for 15 seconds of continuous operation. CHECK for any major chassis modifications, gross suspension misalignment or other items that can alter the vehicle tracking dynamics. CLEAR the DTC. REPEAT the self-test. |
| C1998 | Module Calibration Not Complete | ABS Module | GO to PINPOINT TEST O . |
| C2769 (ABS only) | Longitudinal Acceleration Sensor Electrical Failure | ABS Module | INSTALL a new ABS module. REFER to ANTI-LOCK BRAKE SYSTEM (ABS) MODULE . CLEAR the DTCs. REPEAT the self-test. |
| C2769 (ABS with stability assist) | Longitudinal Acceleration Sensor Electrical Failure (Sensor Cluster Fault) | ABS Module |
NOTE:
When correctly installed, the electrical connector will be on the LH side of the vehicle. VERIFY that the stability control sensor cluster (accelerometer) is correctly installed.If the sensor is not correctly installed, REINSTALL the sensor.If the sensor is correctly installed, GO to PINPOINT TEST H
. |
| C2770 (ABS only) | Longitudinal Acceleration Sensor Plausibility Failure | ABS Module | INSTALL a new ABS module. REFER to ANTI-LOCK BRAKE SYSTEM (ABS) MODULE . CLEAR the DTCs. REPEAT the self-test. |
| C2770 (ABS with stability assist) | Longitudinal Acceleration Sensor Plausibility Failure (Sensor Cluster Fault) | ABS Module |
NOTE:
When correctly installed, the electrical connector will be on the LH side of the vehicle. VERIFY that the stability control sensor cluster (accelerometer) is correctly installed.If the sensor is not correctly installed, REINSTALL the sensor.If the sensor is correctly installed, GO to PINPOINT TEST H
. |
| C2777 | Sensor Cluster Bus Failure (Sensor Cluster Fault) | ABS Module | GO to PINPOINT TEST H . |
| C2778 | Sensor Cluster Power Supply Failure (Sensor Cluster Fault) | ABS Module | GO to PINPOINT TEST H . |
| U1900 | CAN Communication Bus Fault-Receive Error | Network Fault | REFER to MODULE COMMUNICATIONS NETWORK . |
| U1901 | CAN Network #2 Communication Bus Fault-Receive Error | Network Fault | GO to PINPOINT TEST H . |
| U2023 | Fault Received from External Node | Instrument Cluster | REFER to MODULE COMMUNICATIONS NETWORK . |
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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