B1881 on Mazda

Passenger seat belt pretensioner circuit open or high resistance (Ford and Mazda)

Severity: Inspect soon

A pretensioner circuit fault can leave the seat belt pretensioner and the airbag system unable to work, and the airbag lamp is on.

Safety-critical system: explanation only, no DIY steps. Source: how we rate severity

This page covers only what differs on Mazda. For what B1881 means, the ranked causes and the test order, see the B1881 guide.

2001–2004 · B-Series Truck
Supported by vehicle data
Mazda lists B1877 and B1881 together as pretensioner codes. Only the summary was read; whether it is still current is not verified.
2001–2004 · Tribute
Supported by vehicle data
Mazda lists B1877 and B1881 together as pretensioner codes. Only the summary was read; whether it is still current is not verified.
2002 · Tribute
Supported by vehicle data
An owner complaint quotes an estimate for B1881 and updated soldered connectors.

0800203Status unverified
Mazda B-Series safety belt pretensioner codes B1877 and B1881
2001–2004b-series-truck · NHTSA 10002351
2001-2004 B-Series truck (Ford Ranger twin). Summary names the pretensioner codes only.
We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.
0800104Status unverified
Mazda Tribute pretensioner codes B1877 or B1881
2001–2004tribute · NHTSA 10006263
2001-2004 Tribute. Summary names the pretensioner codes only.
We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.

Mazda 0800203: Mazda B-Series safety belt pretensioner codes B1877 and B1881 — NHTSA (manufacturer communication)
Mazda 0800104: Mazda Tribute pretensioner codes B1877 or B1881 — NHTSA (manufacturer communication)
NHTSA complaint ODI 10592987: Mazda Tribute 2002 — NHTSA (owner complaint)
Ford 03-20-11 / 0327: Ford Ranger pretensioner circuit resistance high with B1877 or B1881 — NHTSA (manufacturer communication)
NHTSA complaint ODI 10134416: Ford Escape 2001 — NHTSA (owner complaint)
NHTSA complaint ODI 10149163: Ford Escape 2004 — NHTSA (owner complaint)

This page explains what a code usually means; it is not a substitute for a professional inspection. How we source and review · Report an error