(Table 240, contd)
Service Error Identifiers
Description Troubleshooting
$1173
Diesel Particulate Filter Regeneration Rate Too
Low
The procedure is running in optimum condi-
tions for DPF soot regeneration with no issues
with Soot Sensor measurement. However, ob-
served soot load is not reducing. Contact the
Dealer Solutions Network (DSN) for further
advice.
$10CB
Engine Load Too High
Bring engine to idle and remove load. The cur-
rent operating load is too high to allow EGR
valve to close and EBPR to operate.
Restart the Aftertreatment Recovery
Procedure.
$116F
Engine Exhaust Gas Recirculation Valve Not
Responding to Command
Bring engine to idle and remove load. The cur-
rent operating load may be too high to allow
the EGR valve to close. Identify associated
EGR valve diagnostics. Run the “Air System
Motor Valves Verification Test” to check cor-
rect operation of the EGR valve.
$1168
Engine Exhaust Back Pressure Too High
The observed exhaust back pressure when
testing the EBPR is too high. Identify associ-
ated EBPR diagnostics. Run the “Air System
Motor Valves Verification Test” to check cor-
rect operation of the EBPR.
$1169
Engine Exhaust Back Pressure Too Low
The observed exhaust back pressure when
testing the EBPR is too low. Identify associ-
ated EBPR diagnostics. Check for exhaust
system leaks. Run the “Air System Motor
Valves Verification Test” to check correct oper-
ation of the EBPR.
$11C0
Aftertreatment Diesel Oxidation Catalyst Intake
Temperature Too Low
The DOC intake temperature is lower than re-
quired for the test. Identify causes of exces-
sive heat loss between the engine and the
aftertreatment.
$11C1
Aftertreatment Recovery Unsuccessful
The procedure has run in optimum engine
conditions but has been unable to recover the
Aftertreatment system. Contact the Dealer
Solutions Network (DSN) for further advice.
$11B9
Aftertreatment SCR Catalyst Intake Gas Tem-
perature Too Low
Although the procedure is generating the cor-
rect heat rise, some of this heat is being lost
before the exhaust gas reaches the SCR.
Check for evidence of exhaust leaks in the
CEM between the DOC and the SCR.
Aftertreatment Recovery Procedure (Engines without a DPF)
$0002
Active Diagnostic Present
Resolve any active diagnostic codes. Refer to
the appropriate troubleshooting procedure.
$0009
Service Test Aborted by ECM
Restart the Aftertreatment Recovery
Procedure.
$1010
Engine Stopped (No Engine RPM) Start the engine. Test will then progress.
$10FB
Engine RPM Too Low
Lower the engine speed to idle. Test will try to
take speed control to put engine in acceptable
speed range.
(continued)
496 UENR4469-36
Service
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