What does code U051A mean?

Q: What does code U051A mean?

Invalid Data Received From Door Switch E. U051A is a communication fault where a control module receives invalid or missing data from the door switch labeled E, typically a passenger or rear door switch. The computer detects that the signal from that switch is outside expected parameters or absent when it should be present, so it flags the data as invalid.

DTC codes / U05xx · Network communication / U051A

U051AInvalid Data Received From Door Switch E

U051A is a communication fault where a control module receives invalid or missing data from the door switch labeled E, typically a passenger or rear door switch. The computer detects that the signal from that switch is outside expected parameters or absent when it should be present, so it flags the data as invalid.

SystemNetwork

Code typeGeneric (all makes)

SeverityLow

Fix difficultyIntermediate

AreaNetwork communication

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.