The Lemon IndexB1801 is a manufacturer-specific code, so its exact meaning depends on the make.
Depends on what it means on your make. Get it read before a long drive.
Have a shop read it with the maker's own scan tool first.
Owners named B1801 in 22 complaints to the U.S. government, most often on the Toyota RAV4.
Models that report it most
Complaints that name B1801, by model. Raw counts, not a failure rate: popular models get more complaints. Tap a model for its years, mileage and what owners say fixed it.
B1801 by model: B1801 Toyota RAV4 (10)
Years owners report it on most: 2007 Toyota RAV4 · 2005 Toyota Tacoma · 2008 Toyota RAV4
The details
What B1801 means
B1801 is a manufacturer-specific code: each carmaker decides what it means, so the same code can point to different problems on different brands. We haven't verified its meaning yet. A dealer or a scanner with the maker's software can tell you exactly what it means on your car.
Owners who reported it drive: Toyota (22).
Model years that report B1801 most
2007 Toyota RAV4 (8), 2005 Toyota Tacoma (3), 2008 Toyota RAV4 (2).
Counts: NHTSA owner complaints whose text names B1801. A complaint is an owner's report, not a diagnosis. Meanings: the standard SAE J2012 definitions in our own words; manufacturer codes only where verified for that make. General information, not repair advice for your car.