Siemens LMV5 Quick Start Manual page 171

Error Diag.
Device Display
code code
O2 Value in
B5 07 Operation too
LMV5.. O2 Sensor Test
BA 01
aborted
O2 Control and
BF Any #
Limiter automatic
deactivated
Any # #
01..2F #
C5 Version Conflict
01
LMV5..
02
04 AZL
08 Actuator
10 LMV5..
20 PLL5..
Any #
Fault Feedback
01
D1 LMV5..
VSD Module
02
03
Any #
01 Fault Feedback
D3 PLL5..
O2 Module
02
03
LMV5 QSG Rev 4
Meaning for the LMV5x system
Fault with Base Unit (LMV5) or Oxygen Sensor (QGO2..)
O2 value of 15 % in operation was exceeded
high
O2 sensor test was not successful. E.g. reset of O2 module
during probe test
Fault occurred in connection with O2 trim control or with the O2
monitor. It led to automatic deactivation of O2 trim control or the
O2 monitor
Fault with Base Unit (LMV5) or Connected Components
When comparing the versions of the individual units,
the AZL5... has detected old versions
The diagnostic value is made up of the following faults or their
combinations (the individual diagnostic codes are added up in
hexadecimal format)
Software of the basic unit too old
Software of the load controller too old
Software of the AZL5... too old
Software of 1 or several actuators too old
Software of VSD module too old
Software of O2 module too old
Basic unit has detected a wrong state of the VSD module.
Corresponds to the "8x"-faults with the other CAN users
CRC error
Key error main loop counter
No feedback for max. number
Basic unit has detected a wrong stage of the O2 module
CRC error
Key error main loop counter
No feedback for max. number
Sec 5 Pg 45
Corrective action
1) Check mounting of O2 sensor. Ensure no air in
entering the stack upstream of the sensor.
2) Verivy that the O2 level in the stack is not 15% during
operation.
If fault occurs constantly: Replace PLL5..
See B5 Error codes. The will detail the reason for the
automatic deactivation.
Before replacing any units, start the system and wait
about 1 minute (until, after entering the parameter level,
the display "Parameters will be updated" disappears).
Then, reset. Replace the unit only if the fault message
does not disappear. Replace the relevant units by new
versions
Replace the unit(s) called out in the diagnostic code. Be
sure that the new unit has up to date software.
1) If fault occurs sporadically: Improve EMC.
2) If fault occurs constantly: Replace LMV5
3)Check CANBus cabling. Ensure that all cable shields
(screens) which are located in the cable sheath are
terminated correctly at each actuator, O2 module, and at
the LMV5x...
4) Check each CANBus Connector to ensure proper
termination (no conductors exposed on the back of the
plug)
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