U0422: Invalid data received from the body control module
Another module is receiving impossible or inconsistent data from the body control module. Often a switch or sensor it reads, low voltage or software.
| Code | U0422 |
|---|---|
| System | Communication network |
| Group | U04xx, Invalid data between control units |
| Type | Generic: it means the same on every make |
| Can you keep driving? | With care |
What U0422 means
The body control module (BCM) shares a lot of data over the network: door status, lights, key, brake pedal or outside temperature, depending on the car. This code is stored by another module when those messages arrive out of range or with errors. The body module itself usually has codes saying which data is wrong.
Most common causes
- A faulty switch or sensor wired to the module (door, brake, lights, outside temperature)
- Low or unstable battery voltage
- Loose, corroded or damp body control module connector
- Damaged network wiring or interference
- Body module with the wrong software or configuration, for example after replacement
- Faulty body control module
Symptoms
- Dashboard warnings for no clear reason, such as door open
- Lights, locks or wipers behaving oddly
- Keyless start or stop-start not working
- Other control units disabling functions
Can you drive with U0422?
With care You can drive with care if lights, indicators and wipers work properly. Have it checked soon, as it can affect starting or safety.
Open the bonnetthe in-depth explanation
How to check it
Also read the body module’s codes and note what behaves oddly. With the reader you can watch live data such as the brake pedal switch or door switches: the one that does not change when operated is the suspect.
How to read and clear U0422 with Final OBD
Plug an OBD2 scanner in under the steering wheel, switch the ignition on and open Final OBD. Under Faults you’ll see U0422 with its description and whether it’s confirmed, pending or permanent.
If the engine stores it over standard OBD, with FREE you read this code with its explanation for nothing and clear it. With PRO you also read the faults of every control unit and clear them in all of them.
Clearing the code only turns the light off: if the cause is still there, it comes back. Clear it once it’s fixed, and not right before an inspection. It’s all in how to read and clear fault codes and in inspections and OBD.
Similar codes
- U041E The all wheel drive control unit is sending data that cannot be used
- U041F The throttle actuator B control unit is sending data that cannot be used
- U0420 The power steering is sending invalid data
- U0421 Invalid data arrives from the suspension ride height control unit
- U0423 The instrument cluster is sending invalid data
- U0424 The climate control control unit is sending data that cannot be used
- U0425 The auxiliary heater control unit is sending data that cannot be used
- U0426 The immobiliser is sending invalid data
- U0401 Invalid data received from the engine control module (ECM/PCM)
- U0402 Invalid data received from the transmission control module
- U0415 Invalid data received from the ABS control module
- U0416 Invalid data received from the vehicle dynamics control module
What does code U0422 mean?
The body control module (BCM) shares a lot of data over the network: door status, lights, key, brake pedal or outside temperature, depending on the car. This code is stored by another module when those messages arrive out of range or with errors. The body module itself usually has codes saying which data is wrong.
Can you drive with U0422?
You can drive with care if lights, indicators and wipers work properly. Have it checked soon, as it can affect starting or safety.
How do you clear U0422?
With an OBD2 scanner and an app like Final OBD, which clears it for free if it’s stored by the engine control unit. But clearing it only turns the light off: if the cause isn’t fixed, U0422 comes back.
Read it on your car
Final OBD reads and clears engine faults through standard OBD for free, each one explained in plain English. With PRO it also reads the faults of every control unit, each make’s own codes included, and clears them in all of them.
