U029E00

DTC (Code)
Codigo:
Bulletin:
U029E-00
RD18-002
Date Fecha: July 9, 2018
Description:
Lost Communication With NOx Sensor "B"
Application:
US13 – US20 Emissions
General Information
These repair instructions are intended to address the following fault(s):
DTC
U029E-00
Description
Possible Cause
Lost
Communication
With NOx Sensor
"B"
•
•
•
•
•
•
•
Blown fuse
Supply wire, 12V
Open circuit on ground wire
J1939 CAN2 datalink fault
Faulty or missing terminating resistor in the DPF
wiring harness
Faulty termination resistance in the ECM (EMS)
NOx sensor
Possible (Observable)
Symptoms
Possible engine de-rate
Required Parts
Part Number
Description
Quantity
N/A
N/A
N/A
Repair Instructions
1.
2.
3.
4.
5.
Visually check that wiring harness is not damaged
Check that the connectors are properly connected and locked into position
Disconnect and check the component connector
Inspect pins and terminals for oxidation or corrosion
Ensure that the pins and terminals are locked into the connectors and that they are not pushed back out of the
sockets
6. Check that the pins and terminal are not damaged (which can cause poor connection)
Additional Resources
These repairs are the most likely fix for the identified fault, if this does not fix the issue, Tech Tool will need to be used
for more detailed diagnostics. See Guided Diagnostics fault tracing for U029E-00. If filing a warranty claim, please
include the ASIST case number.
© 2016 Information is subject to change without notice.
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