A fault code doesn’t yet mean the unit or sensor itself is faulty: often it’s the plug and connector leading to it.
Possible causes
- The SRS unit was replaced or a used one from another car was fitted
- The unit was not coded to the car’s equipment, or was coded incorrectly
What you can do yourself
- You can drive, but don’t put off the repair: the airbags may not deploy in a crash.
- Don’t test squibs or airbags with a multimeter and don’t take them apart: the airbag can deploy and injure you. Touch the connectors only with the battery terminal disconnected and after waiting several minutes. Don’t fit airbag “emulators”: there will be no protection in a crash.
- After 255 coding attempts the SRS unit can no longer be coded — it is replaced.
- After the repair the code won’t go away by itself: it is cleared with a scan tool.
This is the Hyundai and Kia meaning. On other makes this number means something else: if your car isn’t a Hyundai or Kia, change the make at the top.
Source: Kia DTC charts: Forte TD, Sedona VQ, Optima JF (NHTSA EA19-001, static.nhtsa.gov)
The explanation comes from the error code reference in the AvtoElektrik PRO app.