Results for “B121”
Fault codes 112
Results match keywords in the stored descriptions. Codes you typed are shown first.
| Code | Description | Brands | System |
|---|---|---|---|
| B121900 | ECU Locked Due To Rollover Crash | 1 | Body |
| B121987 | The electrical fine particle filter has a malfunction. The message is missing. | 1 | Body |
| B121A00 | ECU Locked Due To Pretensioner Deployment | 1 | Body |
| B121A07 | Electrical expansion valve 'Heat exchanger for cooling the high-voltage battery' has a malfunction. There is a mechanical fault. | 1 | Body |
| B121A49 | Electrical expansion valve 'Heat exchanger for cooling the high-voltage battery' has a malfunction. There is an internal electrical fault. | 1 | Body |
| B121A87 | Electrical expansion valve 'Heat exchanger for cooling the high-voltage battery' has a malfunction. The message is missing. | 1 | Body |
| B121A98 | Electrical expansion valve 'Heat exchanger for cooling the high-voltage battery' has a malfunction. The component or the system has overtemperature. | 1 | Body |
| B121B11 | C-Pillar Left SRSU Short To Ground | 1 | Body |
| B121B12 | C-Pillar Left SRSU Short To Battery | 1 | Body |
| B121B13 | C-Pillar Left SRSU Open Circuit | 1 | Body |
Show 15 more matches on this page
| Code | Description | Brands | System |
|---|---|---|---|
| B121B49 | Electrical expansion valve 'Exterior heat exchanger' has a malfunction. There is an internal electrical fault. | 1 | Body |
| B121B64 | C-Pillar Left SRSU Configuration Error | 1 | Body |
| B121B81 | C-Pillar Left SRSU Communication Error | 1 | Body |
| B121B87 | Electrical expansion valve 'Exterior heat exchanger' has a malfunction. The message is missing. | 1 | Body |
| B121B96 | C-Pillar Left SRSU Internal Error | 1 | Body |
| B121B98 | Electrical expansion valve 'Exterior heat exchanger' has a malfunction. The component or the system has overtemperature. | 1 | Body |
| B121C11 | C-Pillar Right SRSU Short To Ground | 1 | Body |
| B121C12 | C-Pillar Right SRSU Short To Battery | 1 | Body |
| B121C13 | C-Pillar Right SRSU Open Circuit | 1 | Body |
| B121C49 | The actuator motor for air flap 'Central air vent' has a malfunction. There is an internal electrical fault. | 2 | Body |
| B121C51 | The actuator motor for air flap 'Central air vent' has a malfunction. The component is not programmed. | 1 | Body |
| B121C64 | C-Pillar Right SRSU Configuration Error | 1 | Body |
| B121C79 | The actuator motor for air flap 'Central air vent' has a malfunction. The mechanical connection has failed. | 1 | Body |
| B121C81 | C-Pillar Right SRSU Communication Error | 1 | Body |
| B121C96 | C-Pillar Right SRSU Internal Error | 1 | Body |
| Code | Description | Brands | System |
|---|---|---|---|
| B121B49 | Electrical expansion valve 'Exterior heat exchanger' has a malfunction. There is an internal electrical fault. | 1 | Body |
| B121B64 | C-Pillar Left SRSU Configuration Error | 1 | Body |
| B121B81 | C-Pillar Left SRSU Communication Error | 1 | Body |
| B121B87 | Electrical expansion valve 'Exterior heat exchanger' has a malfunction. The message is missing. | 1 | Body |
| B121B96 | C-Pillar Left SRSU Internal Error | 1 | Body |
| B121B98 | Electrical expansion valve 'Exterior heat exchanger' has a malfunction. The component or the system has overtemperature. | 1 | Body |
| B121C11 | C-Pillar Right SRSU Short To Ground | 1 | Body |
| B121C12 | C-Pillar Right SRSU Short To Battery | 1 | Body |
| B121C13 | C-Pillar Right SRSU Open Circuit | 1 | Body |
| B121C49 | The actuator motor for air flap 'Central air vent' has a malfunction. There is an internal electrical fault. | 2 | Body |
| B121C51 | The actuator motor for air flap 'Central air vent' has a malfunction. The component is not programmed. | 1 | Body |
| B121C64 | C-Pillar Right SRSU Configuration Error | 1 | Body |
| B121C79 | The actuator motor for air flap 'Central air vent' has a malfunction. The mechanical connection has failed. | 1 | Body |
| B121C81 | C-Pillar Right SRSU Communication Error | 1 | Body |
| B121C96 | C-Pillar Right SRSU Internal Error | 1 | Body |
Advanced: scanner vehicle and live-data matches
Vehicles 2
Vehicle data covers only some brands. These matches come from scanner data, not from a full vehicle index, so treat them as approximate.
| Brand | Model / variant | Details |
|---|---|---|
| Smart | After rectifying a Hall sensor fault (B1200 to , B1210) no normalizing was performed | code B1204 |
| Sprinter | After rectifying a Hall sensor fault (B1200 to , B1210) no normalizing was performed | code B1204 |
Live data 0
No matching live-data parameters.
These tables come from diagnostic data. They are useful for advanced users and can be ignored for a normal code lookup.