MSS60 Error: 27E4, P1209

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Contents

27E4 - P1209

Information saved in DME
Fault code 27E4 - P1209
Fault text Vacuum sensor, brake booster, plausibility
Fault description Brake Booster Pump Shutoff Valve Plausibility
Condition for fault identification Test condition: Constant violations of activation threshold or vacuum gradient is too low during activation
Terminal condition: TERM87
Voltage condition: none
Condition for fault memory entry 5000 ms
Action in service 1. Check ELUP fuse,
2. Check wires,
3. Replace ELUP
Fault effect and breakdown warning CC message
Engine speed limited
Reduced power
MIL after engine runs 2x
Driver information Warning light: MIL, EML, CC message, backup program
Service instruction None