Code Definition

B1912 — Airbag Diagnostic Monitor Ground Circuit Short To Ground

System: Body  |  Type: Manufacturer-Specific  |  Make: Ford

About B1912

B1912 is a manufacturer-specific body diagnostic trouble code recorded for Ford vehicles. It belongs to the B-prefix family of codes, which covers body, interior, airbag, or comfort-electronics faults.

When B1912 is stored, the module has detected a short-circuit (voltage pulled to ground or to supply) in the monitored circuit.

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.

B1912 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 Restraints Control Module (RCM) monitors the airbag diagnostic monitor circuit by checking that voltage on the circuit stays within an expected range during system testing. DTC B1912 is set when the RCM detects that the diagnostic monitor ground circuit has shorted to chassis ground at an unintended location, creating a parallel or low resistance path that disturbs the module's ability to reference sensor returns correctly. A short to ground on this circuit typically indicates physical harness damage where the conductor's insulation has been compromised against vehicle metal, or contaminat...

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