1230 code(s) in this category. Page 1 of 52. Select one to see the detailed diagnosis.
Red (U)
Serious problem in the vehicle high-speed CAN communication network.…
The high-speed CAN bus is functional but performance is degraded — frame errors, bit errors or excessive bus l…
The CAN-High line of the high-speed bus is open. Without the differential pair, the controller cannot decode a…
The CAN-High signal stays below its valid voltage window. Common cause is a short to ground on the CAN-H wire …
The CAN-High line is held above its valid voltage range, usually because of a short to battery voltage. Bus co…
The CAN-Low wire of the high-speed bus is open. The differential signal can no longer be evaluated correctly, …
The CAN-Low line is shorted to ground or held below its valid recessive level. The differential pair cannot tr…
The CAN-Low signal is held above its valid range, typically because of a short to battery voltage on the CAN-L…
CAN-High and CAN-Low are shorted together. The differential signal collapses to zero and the bus controller ca…
The display module does not respond to commands.…
The door control module does not communicate.…
The CAN-Low wire on the medium-speed comfort/body bus is open. Body modules such as door modules, climate cont…
The CAN-Low signal of the medium-speed bus is shorted to ground. Comfort and body modules can no longer exchan…
CAN-Low on the medium-speed bus is shorted to battery voltage. The differential bus cannot work, body and comf…
CAN-High and CAN-Low on the medium-speed bus are shorted together. The differential signal collapses; body and…
A controller on the medium-speed comfort bus has shut its transceiver off after too many consecutive transmit …
The CAN-High wire of the medium-speed bus is open. Body and comfort modules drop offline; the cluster typicall…
CAN-High on the medium-speed bus is shorted to ground. The differential pair cannot work, all body and comfort…
CAN-High on the medium-speed bus is shorted to battery voltage. The bus is non-functional and all comfort modu…
Low voltage on the CAN bus.…
High voltage on the CAN bus.…
CAN-High on the low-speed bus is shorted to battery. Single-wire fallback is also disturbed; comfort modules r…
CAN-High and CAN-Low on the low-speed comfort bus are shorted together. Both differential and single-wire mode…
The low-speed CAN controller has gone bus-off after repeated error frames. The fault-tolerant single-wire fall…