1230 code(s) in this category. Page 4 of 52. Select one to see the detailed diagnosis.
Red (U)
A control module has detected that the communication bus is non-functional and has shut its bus interface off.…
A control module has shut its bus B interface off because the bus is non-functional. Bus B is typically a seco…
Bus B is operational but performance is degraded — error frames or out-of-spec timing. Modules on this bus may…
A control module has shut its bus C interface off because the bus is non-functional. Bus C is typically a tert…
A controller on bus B has reached its transmit error limit and shut its transceiver off. All traffic on this s…
The plus wire of bus B is open. Modules on this segment lose communication. A communication loss with this mod…
The plus line of bus B is shorted to ground. The differential signal collapses and bus traffic stops.…
The control module communication bus H is off — the gateway has shut down or isolated this bus, often due to r…
The control module communication bus I is off — the gateway has shut down or isolated this bus, often due to r…
The control module communication bus J is off — the gateway has shut down or isolated this bus, often due to r…
The control module communication bus K is off — the gateway has shut down or isolated this bus, often due to r…
The control module communication bus L is off — the gateway has shut down or isolated this bus, often due to r…
The control module communication bus M is off — the gateway has shut down or isolated this bus, often due to r…
The plus line of bus B is shorted to battery voltage. The bus stops carrying valid frames. A communication los…
Bus F error counters or message rate out of spec. A communication loss with this module breaks any function re…
Bus F high-side line open. A communication loss with this module breaks any function relying on its data — dia…
Bus F high-side line voltage below expected range. A communication loss with this module breaks any function r…
Bus F high-side line voltage above expected range. A communication loss with this module breaks any function r…
Bus F low-side line open. A communication loss with this module breaks any function relying on its data — diag…
Bus F low-side line voltage below expected range. A communication loss with this module breaks any function re…
Bus F low-side line voltage above expected range. A communication loss with this module breaks any function re…
Bus F lines shorted together. A communication loss with this module breaks any function relying on its data — …
Generic fault on bus G. A communication loss with this module breaks any function relying on its data — diagno…
Bus G error counters or message rate out of spec. A communication loss with this module breaks any function re…