B1884 - FAULT CODE - OBD2

POST UPDATED IN January, 2023

B1884 Code failures by brands

B1884 FORD, LINCOLN, MAZDA, MERCURY: PAD WARNING LAMP CIRCUIT FAILURE

Description of DTC code B1884

When the ignition switch is in the ON position, the RCM (Restraints Control Module) initiates the Passenger Airbag Deactivation (PAD) Indicator test period. The RCM briefly activates the PAD indicator to verify that the occupants function correctly on the PAD indicator.

The DTC B1884 OBD2 is set on Ford, Lincoln, Mazda, and Mercury vehicles when the RCM detects an open or shorted circuit to ground in the PAD indicator circuit.

Symptoms of fault code B1884

Causes of OBD2 B1884

Reasons to set the B1884 OBDII diagnostic code:

  • Passenger AirBag Deactivation warning lamp wires may be damaged.
  • Electrical connections of the Passenger Air Bag Deactivation warning light circuit may be in poor condition, which causes the failure.
  • The PAD warning lamp may be faulty.
  • The Constraint Control Module may be damaged.

Possible solutions of the DTC code B1884

To troubleshoot OBD2 fault code B1884, try this:

  • Consult the TSB (Technical Service Bulletins).
  • Check the Passenger AirBag Deactivation warning lamp circuit wires and verify that they are not defective due to burns or corrosion. If one of these situations is discovered, make repairs as required.
  • Make electrical tests on the PAD warning lamp circuit and check that it is not open or shorted, paying close attention to the condition of the connections. If no damage to the connections is detected, check the condition of the PAD warning lamp. Fix if necessary.

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