B1861 on Lexus
Driver side knee airbag circuit open (Lexus)
Severity: Inspect soon
An open knee airbag circuit turns the SRS light on, and a technician must confirm the circuit before any part is replaced. Honda's and Toyota's owner's manuals say a lit airbag light needs prompt attention because the airbags or belt tensioners may not work as designed.
This page covers only what differs on Lexus. For what B1861 means, the ranked causes and the test order, see the B1861 guide.
What's different on Lexus
LexusYour car
2006–2008 · IS
Supported by vehicle dataLexus bulletins LSB-0167-08 and L-SB-0007-19 cover B1861 on the IS 250 and IS 350, and an owner reports the harness replacement under warranty. Whether they are still current is not verified.
LSB-0167-08Status unverified
SRS light on with DTC B1861
2006–2008is-250, is-350 · issued · NHTSA 10029031
Lexus bulletin for an SRS light with B1861; superseded later by L-SB-0007-19.
We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.
L-SB-0007-19Status unverified
Supersession notice for LSB-0167-08
2006–2008is-250, is-350, is-f · issued · NHTSA 10155240
Replaces LSB-0167-08 and adds the 2008 IS F; the summary does not give the repair.
We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.
LSB-0003-10Status unverified
SRS light on with B1861 and/or B1866
2007–2009ls-460, ls600h · issued · NHTSA 10033557
Replace the instrument panel wire harness after confirming the condition matches.
We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.
Sources and review
- Lexus LSB-0167-08: vehicles may exhibit an SRS light on condition with DTC B1861
- Lexus L-SB-0007-19: supersedes LSB-0167-08, applicability now includes 2008 IS F
- NHTSA complaint ODI 991144 (2006 Lexus IS 250)
- 2023 Accord Owner's Manual: Airbag System Indicators
- Camry Owner's Manual (OM06291U)
- Last reviewed
- Written by
- Saurabh K.
- Editorial review
- Pending
- Technician review
- Technician review pending
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