Fault Code 4281

Fault Code 4281

Brake Fluid Level
Status of the brake fluid level switch is evaluated and displays an implausible value

Diagnostic conditions
- Ignition on
- Waiting time approx. 30 s

Possible cause of fault
- Brake fluid level too low
- Short circuit to B+/ground or open circuit
- PSM control unit faulty

Affected pins
Pin 36

Diagnosis/troubleshooting

Brake fluid level switch plug

Work Instruction 1 - 8:

NOTE: If brake fluid reservoir level is too low, check if the 'Brake fluid level' warning light is lit and remove the cause for the low level.