K03573329

Solution K03573329
Monday, November 4, 2019 8:34:41 PM CET
** SOLUTION **
Title
Diagnostic Trouble Codes ( DTC ) P2080, P2084, P242B Lighting The Malfunction
Indicator Lamp ( MIL ) - US14+OBD16, US17+OBD16, And US17+OBD18
Emissions, Model Years 2017 To 2019
Mack Models
LR , MRU - TerraPro , AN - Anthem , CHU - Pinnacle, Axle back , CXU - Pinnacle,
Mack Model
Axle front , GU - Granite
Volvo Models
VNL , VNM , VNR , VNX , VAH , VHD
Volvo Model
Emission Standard
Emission Standard
US14+OBD16 , US17+OBD16 , US17+OBD18
Engine family
Engine family
11L Engine , 13L Engine , MP7 , MP8
** SOLUTION **
Cause
Diagnostic Trouble Codes ( DTC ) P2080, P2084, and/or P242B may set after key off. It
has been found that this may be due to incorrect calculation of the "soak" time of
ambient temperature.
Vehicles may exhibit the MIL and one or any combination of the above fault codes
from the Engine Control Module (EMS), as well as one or more of the symptoms
below:
• No Diesel Exhaust Fluid ( DEF ) Dosing
- DEF will not be injected with these faults active.
• Unable To Complete A Parked Regeneration
- Aftertreatment Hydrocarbon Injector ( AHI ) injection will not take place with
these faults active.
• Parked Regeneration Runs Too Long, And Does Not Complete
Solution
No parts should be replaced for these fault codes
unless a definite sensor failure is found.
Fault Tracing Procedure:
1. Allow the vehicle to sit until the engine and exhaust have reached ambient (air) temperature.
2. Turn the ignition to ON, engine OFF.
2. Using Premium Tech Tool (PTT), run either of the operations below:
• 2545-08-03-02 Exhaust Aftertreatment Diagnostics, option A
- This will provide a numerical view of exhaust temperatures.
• 2589-08-03-02 Exhaust Aftertreatment System, Service Regeneration
- This will provide a graphical view of exhaust temperatures.
3. Ensure that the sensor readings are within 10 °C (18 °F) of one another before starting the engine.
4. Start the engine.
5. Monitor exhaust temperatures on PTT:
• The sensor temperatures should rise in the order of 1, 2, 3 as shown below after starting the engine.
6. Evaluate results:
• If the sensor readings are equal at ambient temperature and rise in the correct order when
the engine is running: No further fault tracing should be performed. Clear the DTCs and return the
vehicle to service.
• If one or more sensors are displaying a different reading from the others or are spiking
instead of smoothly increasing with the engine running: The sensor(s) should be suspected to be
faulty.
• If the temperature sensor values rise out of order: The sensors should be checked to ensure
they are installed in the correct positions.
An example of proper temperature sensor function can be found below:
This CBR will be updated when new information is available.
Solution visibility
Dealer distribution
Function(s)/component(s) affected
Function affected
1 1 0 EMS , DEF Dosing , DOC , DPF
Function Group
Function Group
254 catalytic converter; exhaust emission control equipment , 258 emissions aftertreatment
Customer effect
Main customer effect
regeneration , temperature , fault code/display
Fault Codes And Error Codes
OBDII Diagnostic Trouble
Codes (P, U, B Format)
P2080-64 , P2084-64 , P242B-64
Conditions
Vehicle operating mode
on start-up , when stationary
Administration
Author
UT0389H
Last modified by
RU4469V
Creation date
14-03-2017 20:03
Date of last update
04-10-2019 17:10
Review date
15-06-2017 00:06
Status
Published
Average score
4
Number of scores
4
NA_Reviewer
Jeremy Newton
NA_Author_Group
GTT
UNCONTROLLED COPY. Printed document is for temporary use only and should not be retained.