CAN Link ECM/ABS Circuit Fault
2000-2003 Ford Excursion 7.3L V8 Power Stroke Diesel
Description
The Controller Area Network (CAN) communication link between the Engine Control Module and the ABS module has a fault. The modules cannot exchange data properly.
Symptoms
- Check Engine Light
- ABS warning light
- Traction control disabled
- Possible limp mode
Common Causes
- Damaged CAN bus wiring
- Faulty ABS module
- Faulty PCM
- Corroded CAN connector
- CAN bus termination issue
Diagnostic Steps
- Check for ABS DTCs as well
- Inspect CAN bus wiring for damage
- Test CAN bus resistance (should be ~60 ohms between CAN-H and CAN-L)
- Check connectors at PCM and ABS module
Repair Notes
Repair CAN bus wiring. Replace faulty module if communication is lost.
Related Codes
Other Powertrain Codes
- P0001Fuel Volume Regulator Control Circuit/Open
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0003Fuel Volume Regulator Control Circuit Low
- P0004Fuel Volume Regulator Control Circuit High
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
- P0011Intake Camshaft Position Timing Over-Advanced Bank 1
- P0012Intake Camshaft Position Timing Over-Retarded Bank 1
- P0013Exhaust Camshaft Position Actuator Circuit/Open Bank 1
- P0014Exhaust Camshaft Position Timing Over-Advanced Bank 1
- P0015Exhaust Camshaft Position Timing Over-Retarded Bank 1
P1637 on Other Vehicles
Common Questions
What does code P1637 mean on a 2000-2003 Ford Excursion?
P1637 stands for "CAN Link ECM/ABS Circuit Fault". The Controller Area Network (CAN) communication link between the Engine Control Module and the ABS module has a fault. The modules cannot exchange data properly.
What are the symptoms of P1637 on a Ford Excursion?
Common symptoms of P1637 include: Check Engine Light, ABS warning light, Traction control disabled, Possible limp mode.
What causes P1637 on a 2000-2003 Ford Excursion?
Common causes of P1637 include: Damaged CAN bus wiring, Faulty ABS module, Faulty PCM, Corroded CAN connector, CAN bus termination issue.