(Table 240, contd)
Service Error Identifiers
Description Troubleshooting
$1170
Engine Exhaust Back Pressure Regulator Not
Responding to Command
Engine EGR valve is not responding to a
command
The test has verified that the valve is electri-
cally OK, but the actuator is not responding to
the desired test profile. Contact the Dealer
Solutions Network (DSN) before proceeding
Aftertreatment System Functional Test
$0002
Active Diagnostic Present
Resolve any active diagnostic codes. Refer to
the appropriate troubleshooting procedure.
$105F Service Test Timed Out
Not all conditions were met for the test to com-
plete. Restart the Aftertreatment System
Functional Test.
$10CB
Engine Load Too High
Bring engine to idle and remove load. Current
operating load is too high to allow the EGR
valve to close and the EBPR to be used. Re-
start the Aftertreatment System Functional
Test.
$10D0
Engine Has Not Been Running Long Enough
Allow engine to Idle for 2 minutes and restart
the Aftertreatment System Functional test.
$10FB
Engine RPM Too Low
Lower the engine speed to idle. The test will
attempt to take speed control to put engine in
acceptable speed range. Restart the After-
treatment System Functional Test.
$10FC
Engine RPM Too High
Lower the engine speed to idle. The test will
attempt to take speed control to put engine in
acceptable speed range. Restart the After-
treatment System Functional Test.
$1121
Another Engine Speed Request Active
Service test request to take speed control was
denied by the application.
$112C
Particulate Filter Intake Temperature Too Low
The SCR system cannot dose due to the DPF
inlet temperature not being high enough to al-
low DEF dosing to initiate. Check for exhaust
leaks and restart the Aftertreatment System
Functional Test.
$115C
Regeneration is Active
HC dosing is currently active. Allow desulfa-
tion to complete and then restart the After-
treatment System Functional Test.
$116F
Engine Exhaust Gas Recirculation Valve Not
Responding to Command
Bring the engine to idle and remove load. The
current operating load is too high to allow the
EGR valve to close.
$11A8
Aftertreatment SCR Catalyst Conversion Effi-
ciency Too Low
The SCR system NOx conversion is too low to
perform the test. Refer to Troubleshooting,
“NOx Conversion is Low”.
$11A9
Aftertreatment Outlet NH3 Too High
There is too much NH3 in the exhaust. Per-
form the “Manual HC Dosing Capability Test”
to raise the exhaust temperature and reduce
the NH3 storage.
$11AA
Aftertreatment Diesel Exhaust Fluid Tempera-
ture Too Low
The temperature of the DEF is too low. Oper-
ate the engine to raise the DEF Temperature.
(continued)
UENR4469-36 491
Service
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