K72511005

Solution K72511005
Friday, July 6, 2018 3:09:35 PM CEST
Mack Models
Mack Model
LR , MRU , CHU , CXU , GU , TD
Engine family
Engine family
MP7 , MP8 , MP10
Emission Standard
Emission Standard
US16 , US15
** SOLUTION **
Title
Mack Chassis - Diagnostic Trouble Code ( DTC ) P0422 Lighting The Malfunction
Indicator Light ( MIL ) - US14+OBD15 And US14+OBD16 Emissions, Common Model
Years 2016 And 2017
Cause
US14+OBD15 and US14+OBD16 (Commonly Model Year 2016 and 2017) chassis may
log DTC P0422. It is possible that the code is generated due to a software issue, resulting
in diagnosis finding no fault.
Solution
Verify the chassis emissions level
• Details can be found in the Product Details box on the Product tab in PTT as seen below:
Review the Detailed Status Information for the relevant code on the DTC Readout.
Software improvements have been released for both emissions levels to address
this DTC. Field Service Bulletins with information and instructions have been
published for each emissions level. Both FSBs can be found under the Service tab
in Impact, Function Group 284. The articles can also be searched for by Title.
Refer to the chart below for the correct bulletin information:
Emissions Level
Field Service Bulletin
(Model Year)
US14+OBD15
FSB 284-064 Engine Control Module (ECM) and
(2016)
Aftertreatment Control Module (ACM), Reprogramming
US14+OBD16
FSB 284-065 Engine Control Module (ECM) and
(2017)
Aftertreatment Control Module (ACM), Reprogramming
If the Bulletin does not appear when searched with either VIN or Chassis
information entered, search by model:
1. Clear any chassis information from the Search box.
2. Select or enter the applicable model.
3. Make sure Title is selected in the Search By field. Enter the correct Bulletin title in the
text entry field.
4. Press the Search button. The operation will appear in the results window.
5. Select the correct vehicle configuration from the list that appears as shown below:
If software is current and the code is present, the code confirmed status should be
verified to be TRUE as shown above before continuing diagnosis.
- Codes and symptoms related to P0422 should be diagnosed prior to P0422.
NA_Sister solutions
K42708399
Campaign code
FSB284-064, FSB284-065
Solution visibility
Dealer distribution
Function(s)/component(s) affected
Function affected
exhaust , Diagnostic tool
Function Group
Function Group
254 catalytic converter; exhaust emission control equipment , 258 emissions aftertreatment , 284 control system, fuel supply
Customer effect
Main customer effect
regeneration , diagnostics/methodology , efficiency/abnormal behavior , fault code
/display
Fault code(s)
OBD 2013 Diagnostic
Trouble Codes
P0422
Conditions
Vehicle operating mode
when driving , when stationary
Frequency of occurrence of
always
problem
Administration
Author
RU4469V
Dealer ID
RU4469V
Last modified by
RU4469V
Creation date
18-04-2018 22:04
Date of last update
18-06-2018 21:06
Status
Published