What are the common diagnostic trouble codes (DTCs) related to airbags, and what do they mean?

Diagnostic Trouble Codes (DTCs) related to airbags are part of the vehicle's Supplemental Restraint System (SRS). While the specific codes can vary depending on the manufacturer and the vehicle model, there are some generic codes and issues that are relatively common across many vehicles.
 
Here's a list of some common DTCs related to airbags and their general meanings:
 
BXXXX Codes:
  • Airbag codes usually start with a "B," indicating it's a Body-related fault. The "B" is followed by four numbers.
B0001 – B00XX: Codes related to airbag deployment
  • B0001-B0002: Driver Frontal Stage 1 Deployment Control
  • B0003-B0005: Driver Frontal Stage 2 Deployment Control
  • B0010-B0013: Passenger Frontal Stage 1 Deployment Control
  • B0014-B0017: Passenger Frontal Stage 2 Deployment ControlThe numbers might vary, but the concept is the same: they relate to specific stages of airbag deployment and which airbag (driver or passenger) is involved.
B0018 – B002X: These codes often relate to issues with side airbags.

B0100 – B0104: Front impact sensor faults
  • These codes indicate problems with the sensors located at the front of the vehicle that detect frontal impacts.
B0111 – B0114: Side impact sensor faults
  • These codes indicate problems with the sensors located on the sides of the vehicle that detect lateral impacts.
B0125 – B0126: Seatbelt pretensioner faults
  • These codes relate to issues with the seatbelt systems, which can tighten the seatbelts during a crash.
B013E – B013F: Driver Seatbelt Buckle Switch
  • These codes indicate issues with the switch that detects if the driver's seatbelt is buckled.
B0140 – B0149: Various issues related to sensors or circuits for passenger airbags.

B0201-B02XX: These can indicate issues with the circuits or connectors leading to specific airbags or the ACM itself.

B1XXX:
  • These codes often indicate "circuit" issues, like "open circuit," "short to ground," or "short to battery." They pinpoint problems with the wiring or connections in the SRS system.
 
Remember, the exact meaning of a DTC can vary depending on the vehicle's manufacturer and model. While the above provides a general idea, always consult the specific vehicle's service manual or a reliable diagnostic database to get an accurate interpretation of a code.
If you have a specific code or set of codes in mind, or if you need details about a particular vehicle's DTCs, please provide that information, and I'd be happy to help further!