Code Definition

B1B70 — Local Interconnection Network (LIN) Bus Circuit 2

System: Body  |  Type: Manufacturer-Specific  |  Make: Land Rover

About B1B70

B1B70 is a manufacturer-specific body diagnostic trouble code recorded for Land Rover vehicles. It belongs to the B-prefix family of codes, which covers body, interior, airbag, or comfort-electronics faults.

When B1B70 is stored, the module has detected an electrical-circuit fault in the wiring, connector, or driver associated with the named component.

Scanning & clearing: Body (B) codes are often stored in the body control module, airbag module, or climate module. A basic OBD-II tool usually will not read body codes — an enhanced or OEM-level scan tool is typically required.

B1B70 is a manufacturer-specific code. The same code string on a different make may have a different meaning. Always confirm the code's definition against the vehicle's service information for the specific make and model under test.

Code Information

The Body Control Module (BCM) or Seat Control Module acts as the master on this Land Rover Local Interconnection Network (LIN) Bus Circuit 2 and exchanges data with one or more slave nodes connected to it, which depending on vehicle trim can include seat modules, mirror controllers, steering wheel switches, or other low data rate peripherals. The LIN line is a single wire bus that sits close to battery voltage when idle and is pulsed to ground by the transmitting node to encode each data frame, and the master module monitors the bus electrical level and the responses it receives from each addr...

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