P1803

P1803

General Bus Fault.
Fault symptoms

CHECK GEARBOX warning lamp is on.

Conditions
Ignition ON

Fault criteria
TCM detects that there is no communication on the bus.

Diagnostic help
Note that if this diagnostic trouble code can be read, the fault is not permanent but has on a previous occasion occurred intermittently. See fault diagnosis under Bus and diagnostic communication.

Fault diagnosis procedure is not available