B1977

DTC B1977, sometimes indicated as B197700 is an OBD diagnostic trouble code indicating a manufacturer-specific fault with the vehicle body.

DTC Trouble Code Search

Bulletins

Bulletins are notices put out by manufacturers in conjunction with the NHTSA to notify the public of manufacturing issues or changes.

BC0776961015 - AIR BAGS
MERCURY: Air bag test results directs tech to B1977-4, which is incorrect. It should direct tech to B1937-4. *tt