Siemens LMV5 Series Technical Instructions

Error
Code
Diag.
Code
Device Display Meaning for the LMV5x System Corrective Action
23
Unplaus Value
Ri 02 Measuring
Cell
Measured internal resistance of the QGO measuring cell
is smaller than 5 Ohm or greater than 150 Ohm
1) Check the wiring between the O2 Module and the O2
sensor.
2) O2 Sensor may have reached the end of its service
life (check resistance through AZL - QGO Resistance
).
If greater than 140 - 150 ohms, replace sensor.
24
Response Time
O2
Measuring Cell
too long
Measured response time of the QGO measuring cell
exceeds 5 seconds
(completely electronic)
1) Check mounting position / orientation of O2 sensor.
2) Check to see if O2 sensor is dirty. Do not blow out
with compresed air when hot! Cool, then blow out with
low pressure compressed air (less than 10 psi)
3) O2 Sensor may have reached the end of its service
life (check resistance through AZL - QGO Resistance
).
If greater than 140 -150 ohms, replace sensor.
25
O2 Sensor Test
aborted by O2
Module
Fault occurred during O2 sensor test
Check (through the AZL - Normal Operation ) to see if
the measured O2 value is fluctuating.
30 CAN fault
1) If fault occurs sporadically, reduce electrical noise.
2) If fault occurs constantly, replace PLL5..
31 CRC fault of a parameter page
32 Page too long open
33 Page disrupted
34 Invalid access to parameters
38 Fault during copying of a parameter page
3E
External plausibility fault. This type of fault covers possible
faults occurring due to invalid presettings in the drive
commands. In response, the presettings will be ignored.
3F
Internal plausibility fault. This type of fault covers possible
errors that cannot practically occur.
1) If fault occurs sporadically, reduce electrical noise.
2) If fault occurs constantly, replace PLL5..
Any # Fault during test of port outputs
01 Fault when resetting the set outputs
02 Fault during ZR test
B1 01 Fault during short-circuit test between inputs and outputs
Fault with 02 Module (PLL5..) or Oxygen Sensor (QGO2..)
Fault with Base Unit (LMV5)
B0
1) Reset the LMV5
2) If fault occurred after changing a parameter, check
the parameters that were last changed.
3) If fault cannot be rectified by the reset: Restore
parameters from the AZL to the LMV5
4) Replace the LMV5
PLL5..
1) If fault occurs sporadically, reduce electrical noise.
2) If fault occurs continuously, replace LMV5.
AB
Internal Fault O2
Module
LMV5..
Internal Fault
Basic Unit
Section 7 Page 54 SCC Inc.
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Siemens LMV5 Series Specifications

General

Brand	Siemens
Model	LMV5 Series
Category	Control Systems
Language	English