Fault
code
DIN brief description Cause Consequences Remedy
Integrated pressure controller of the 1Z1 air dryer with
integrated pressure controller incorrectly configured or faulty;
- 2V1 overflow valve for isolation of tire pressure from control
pressure faulty
12.1.55
A087 tire pressure monitoring system
(TPMS)
Supply pressure of TPMS block not in valid range
2V2 pressure reducing valve, control pressure incorrectly
configured or faulty
The axle that has
detected the fault is
blocked.
12.1.B0
A087 tire pressure monitoring system
(TPMS)
Invalid parameters in EEPROM
EOL programming faulty
EOL
programming
12.1.F0
A087 tire pressure monitoring system
(TPMS)
Incorrect check sum for the first 128 bytes in the EEPROM
EOL programming faulty
EOL
programming
12.1.F1
A087 tire pressure monitoring system
(TPMS)
Invalid GD routing table
EOL programming faulty
EOL
programming
12.1.FE
A087 tire pressure monitoring system
(TPMS)
Faulty hardware
(e.g. RAM or Flash)
3. Faults and remedy
Maintenance 211
530.020.020.011 Rev.A