What does this code mean?
The wording below belongs to the named make and communication. Match the complete code, reporting module, model year and engine before applying it.
A code identifies a detected condition, not a part that must automatically be replaced.
Manufacturer wording
Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
U1A4B-49Control Module Processor B - Internal FailureU1A4B:97RADAR SENSOR SENSITIVITY TEMPORARILY DECREASES DEPENDING ON VARIOUS EXTERNAL AND ENVIRONMENTAL FACTORS (BLIND SPOT MONITORING (BSM) CONTROL MODULE (RH)) - DTCU1A4B:97Radar sensor sensitivity temporarily decreases depending on various external and environmental factors (blind spot monitoring (BSM) control module (RH)), DTCManufacturer communications
12Original wording in English
MAZDA
Reported code forms U1A4B:54
If the right-side Blind Spot Monitoring (BSM) control module is replaced for any reason, it is also necessary to replace the left-side BSM control module in order to complete the radar aiming procedure. If the…
MAZDA
Reported code forms U1A4B:54
If the right-side Blind Spot Monitoring (BSM) control module is replaced for any reason, it is also necessary to replace the left-side BSM control module in order to complete the radar aiming procedure. If the…
MAZDA
Reported code forms U1A4B:54
If the right-side Blind Spot Monitoring (BSM) control module is replaced for any reason, it is also necessary to replace the left-side BSM control module in order to complete the radar aiming procedure. If the…
MAZDA
Reported code forms U1A4B:97
Some vehicles with Blind Spot Monitoring (BSM) may experience the following conditions (similar to when the BSM control modules detect dirt on the rear bumper surface): DTC U1A4B:97 - Radar sensor sensitivity…
LAND ROVER
Reported code forms U1A4B-49
Issue: Land Rover has received reports where during diagnosis of the surround camera system the Diagnostic Trouble Code (DTC) B12BD-31 "Rear Camera - No Signal" and or U1A4B-49 "Control Module Processor B - Internal…
LAND ROVER
Reported code forms U1A4B-49
Issue: Land Rover has received reports where during diagnosis of the surround camera system the Diagnostic Trouble Code (DTC) B12BD-31 ?Rear Camera - No Signal? and or U1A4B-49 ?Control Module Processor B ? Internal…
Check vehicle applicability
37A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Jaguar | XK | 2014 |
| Jaguar | XK | 2013 |
| Jaguar | XK | 2012 |
| Jaguar | XK | 2011 |
| Jaguar | XK | 2010 |
| Land Rover | DISCOVERY | 2018 |
| Land Rover | DISCOVERY | 2017 |
| Land Rover | RANGE ROVER | 2017 |
| Land Rover | RANGE ROVER | 2016 |
| Land Rover | RANGE ROVER | 2015 |
| Land Rover | RANGE ROVER | 2014 |
| Land Rover | RANGE ROVER | 2013 |
Before replacing a part
Record codes and freeze-frame data. Check battery condition, related codes and visible wiring or hose damage. Follow the vehicle's diagnostic procedure and test results before replacing parts.
Can I keep driving?
A code alone cannot establish whether driving is safe. A flashing malfunction light, severe shaking, overheating, oil-pressure warning or loss of braking or steering needs prompt attention. Stop in a safe place and seek assistance when control or engine safety is affected. Follow the vehicle handbook.