Code Definition

B1886 — Seatbelt Passenger Pretensioner Circuit Resistance Low on Squib

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

About B1886

B1886 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 B1886 is stored, the module has detected a signal or supply voltage lower than the expected operating range.

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.

B1886 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) continuously monitors the resistance of the passenger seatbelt pretensioner squib circuit during normal operation and at every key up self test. DTC B1886 is set when the RCM measures resistance on the passenger pretensioner squib loop that has fallen below the calibrated low resistance threshold, indicating a partial short within the pretensioner element, its harness, or the connector. The squib is a small pyrotechnic igniter inside the pretensioner that fires during a crash to pull the passenger seatbelt webbing tight against the occupant, and the loop res...

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