(Table 196, contd)
Troubleshooting Test Steps
Values Results
F. For the NRS valve, use a multimeter to check the resistance
between P2:3 and all other terminals on the P2 connector.
G. Reconnect the connectors.
i08481007
NOx Sensor - Test
The ECM is monitoring the NOx level being reported
by the sensor. If the NOx value is not steady when
the engine speed/fueling is steady, the codes listed
below will log. If the NOx value is steady when the
engine speed/load is changing, the codes listed
below will log.
Table 197 lists the diagnostic codes for the NOx
sensors.
Table 197
Diagnostic Trouble Codes for the NOx Sensors
J1939
Code
CDL
Code
Code Description
(code descriptions may
vary)
Comments
3216-7
E1431 (2)
Aftertreatment #1 Intake NOx :
Not Responding Properly
The engine out NOx level is not responding as expected.
The code is logged.
3226-7
E1432 (2)
Aftertreatment #1 Outlet NOx :
Not Responding Properly
The tailpipe out NOx level is not responding as expected.
The code is logged.
4364-2
E1410 (2)
Aftertreatment #1 SCR Catalyst
Conversion Efficiency : Erratic,
Intermittent, or Incorrect
The Engine Out and Tailpipe Out NOx Sensors are installed in the incorrect
locations
Follow the troubleshooting procedure to identify the root cause of the problem.
Table 198
Required Tools
Tool Part Number
Part Description Qty
A T401199 Kit - Test 1
B T402192
Adapter
1
C N/A
Wired Borescope/5.5 mm HD
Camera
1
Table 199
Associated Diagnostic Trouble Codes
J1939 Code CDL Code
412-15
E1092 (1)
412-16
E1092 (2)
4364-2
E1410 (2)
4360-16
E946 (2)
4360-17
E947 (1)
4360-18
E947 (2)
4765-17
E2165 (1)
5298-17 2180-1
Complete the procedure in the order in which the
steps are listed.
UENR4469-36 361
Circuit Tests
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