What does this code mean?
The wording below belongs to the named make and communication. Match the complete code, reporting module, model year and engine before applying it.
A code identifies a detected condition, not a part that must automatically be replaced.
Manufacturer wording
Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
B1877DRIVER PRETENSIONER CIRCUIT RESISTANCE HIGHManufacturer communications
3Original wording in English
FORD
Reported code forms B1877
SAFETY BELT PRETENSIONER DIAGNOSTIC TROUBLE CODES (DTC) B1877 AND/OR B1881. *TT
FORD
Reported code forms B1877
DIAGNOSTIC TROUBLE CODE B1877 AND/OR B1881 INDICATING A HIGH RESISTANCE IN THE SAFETY BELT PRETENSIONER CIRCUIT. *TT *JB
FORD
Reported code forms B1877
DIAGNOSTIC TROUBLE CODES (DTC) B1877 (DRIVER PRETENSIONER CIRCUIT RESISTANCE HIGH) AND/OR B1881 (PASSENGER PRETENSIONER CIRCUIT RESISTANCE HIGH), INDICATING A HIGH RESISTANCE IN THE SAFETY BELT PRETENSIONER CIRCUIT. *TT
Check vehicle applicability
3A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
Before replacing a part
Record codes and freeze-frame data. Check battery condition, related codes and visible wiring or hose damage. Follow the vehicle's diagnostic procedure and test results before replacing parts.
Can I keep driving?
A code alone cannot establish whether driving is safe. A flashing malfunction light, severe shaking, overheating, oil-pressure warning or loss of braking or steering needs prompt attention. Stop in a safe place and seek assistance when control or engine safety is affected. Follow the vehicle handbook.