B2139: Data Mismatch (receive data does not match what was expected)
LowBodyBody Electronics
What does B2139 mean?
B2139 is a diagnostic trouble code indicating "Data Mismatch (receive data does not match what was expected)". This code relates to your vehicle's body electronics and should be diagnosed to determine the root cause. The severity level helps indicate how urgently this should be addressed.
Common causes
- Faulty body electronics component
- Wiring or connector issue in the related circuit
- Failed sensor providing incorrect readings
- Software/calibration issue requiring ECU update
- Related component causing secondary fault
What should you do?
This is a minor or informational code. Monitor for any changes in vehicle behaviour and address it during your next scheduled service visit.
Get a diagnosis for YOUR car
Code B2139 can mean different things depending on your vehicle. TorqueBot gives you a diagnosis specific to your make, model, and year.