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SPA  / U2140 00

Read the instructions below then start the fault diagnostic procedure.

Symptom: Message appears in display.

  U2140 00


UEC Missing on Bus

Fault symptom

Message appears in display.

On-board diagnosis

Type of diagnosis:

Continuous

Enable criteria:

•Ignition ON.
•Battery voltage greater than 9 V.

Fault criteria:


No signal from UEC.
UEC control module not on the bus.

System reaction to a fault:

•Parking assistance is switched off.
•No bus communication.

Diagnostic help

Diagnosis regards:


Electrical fault on bus leads or in the component.

Functions in the diagnostic tool related to the fault:

Test value:
Bus Off Counter, I-Bus
(See also description of readings/activations in diagnostic tool)