u001e refers to a communication issue within the vehicles network specifically indicating a problem with the high speed can communication bus

OBD2 Code: U001E

Description: High Speed CAN Communication Bus (-) Open

Definition: This code indicates that there is an open circuit condition on the negative side of the high-speed Controller Area Network (CAN) communication bus, which may result in disrupted or lost communication between various control modules in the vehicle.

– Severity: Medium

Common Causes

Common causes:
– Faulty wiring or connections in the CAN bus system
– Defective CAN bus module
– Issues with other modules connected to the CAN bus
– Electrical interference affecting the CAN bus signals

 

Common Misdiagnosis

– High Speed CAN Communication Bus

Common Misdiagnosis: Replacing control modules or sensors without verifying the integrity of the communication bus wiring and connections.

 

Common Diagnostic Steps

OBD2 Code: U001E – High Speed CAN Communication Bus

Description: A communication issue within the vehicle’s network, specifically indicating a problem with the high-speed CAN communication bus.

1. Check for any other stored codes that may indicate where the fault is occurring.
2. Inspect all related wiring and connectors for signs of damage, corrosion, or disconnection.
3. Test the voltage and ground connections at the CAN bus module to ensure they are within specifications.
4. Use an oscilloscope to check for proper signal waveforms on the high-speed CAN lines.
5. Verify that there are no aftermarket devices interfering with the CAN bus communication.
6. If equipped, use a scan tool to perform a network test to identify which module is not communicating properly.
7. Consult the vehicle’s service manual for specific diagnostic procedures related to this code and follow them accordingly.

Note: Always refer to manufacturer-specific repair information and guidelines when diagnosing and repairing OBD2 codes.