Solution K24483157
Tuesday, March 6, 2018 7:37:54 PM CET

Solution
Title (customer effect)

Diagnostic Trouble Codes ( DTC ) P208E And P103B Logging With Possible Derate (
SCR Inducement ) - OBD15, US14+OBD16 Emissions And Newer

Cause

P208E and or P103B may be generated due to the intermittent, temporary clogging of
the Diesel Exhaust Fluid (DEF) dosing valve, normally at startup.

Solution

- DO NOT RUN A SERVICE REGENERATION OR CRYSTAL SUBLIMATION
TO EXIT INDUCEMENT FOR THESE CODES.
- IF THE CHASSIS CAME IN WITH DERATE WARNINGS ACTIVE, Proceed to
section two Prior To Programming.

I. Software Levels
- Verify the chassis emissions level
- Details can be found in the Product Details box on the Product tab in PTT as seen
below:

- Check Engine Control Module (EMS) software levels:
• Updated software for OBD15 chassis will have a Main Software (MSW)
23167877 or newer
• Updated software for US14+OBD16 chassis will have a Main Software (MSW)
23169815 or newer
• Updated software for US17+OBD16 and newer chassis will have a Main Software
(MSW) 23242993 or newer
- For chassis that have older MSW part numbers than listed above:
• Reprogram the following modules in the order listed.
1. Engine Control Module ( EMS )
2. Aftertreatment Control Module ( ACM )

II. System Tests
Premium Tech Tool (PTT) Operation number 2589-08-03-05 Aftertreatment
selective catalytic reduction (SCR) system, found under Function Group 2 in the
Test tab should be utilized to diagnose the problem and exit inducement in the
order listed below:
1. Test A: System Pressure Build Up
- This test confirms that the DEF pump builds pressure as expected (this test can be
skipped if other tests will also be performed).
- IF PRESSURE IS NOT BUILT, DO NOT REPLACE DEF PUMP. Follow the
instructions below:
1. Start the truck and allow it to run for 10 minutes.
2. Shut off the truck.
3. Rerun the test.

2. Test B: Dosing Test
- A graduated cylinder or other appropriate container with measurement accurate within
2 milliliters (cubic centimeters) should be used to measure dosing test results.
1. Sub-Test 2, Small dosing test - 120 seconds at 25% dosing
2. Sub-Test 3, Large dosing test - 120 seconds at 100% dosing
3. Sub-Test 4, Dosing Test, Exit inducement mode - This will clear any inducement
(derate) condition caused by P208E or P103B.

3. Test C: Exit Inducement Mode
- Test B, sub-test 4 mentioned in the previous section runs the diagnostic monitor on the
dosing valve and verifies it is operating correctly. Test C will reset any inducement
(derate) timers present.
- This test should be run as the last step before releasing vehicle back to the customer so
that if the problem is not completely fixed, the driver will still have 4 hours to reach a
service location before the vehicle begins going into severe derate.

Internal comments (BO)

Do not recommend EECU /ACM replacements for this issue.
Recommend GD along with this CBR.
If the truck has been in multiple times for this issue, recommend thorough inspection for
any clog/electrical issues.
NOTE: OBD2015 (23167877 or newer) and OBD2016 (23169815 or newer) has new
EECU SW released which has significant improvements. GHG2017+ (23242993 or
newer) products has improvements.
NOTE: Once SW is at or newer than mentioned above, only P103B causes
derate. P208E only need to be diagnosed if fault is "CONFIRMED".
NOTE: US13 and US14 chassis will need to have complete diagnosis performed to find
the root cause.

Solution visibility

Dealer distribution

Function(s)/component(s) affected
Function affected

exhaust , SCR , CV electronic control unit , 1 1 0 EMS , 2 1 0 ACM , Diagnostic tool

Function Group
Function Group

254 catalytic converter; exhaust emission control equipment , 2584 Dosage Valve;
Injector

Customer effect
Main customer effect

regeneration , calibration/programming/pairing/missing operation , diagnostics
/methodology , efficiency/abnormal behavior , fault code/display

Fault code(s)
OBD 2013 Diagnostic
Trouble Codes
NA_MIDs

P103B , P208E
MID 128 EMS

Conditions
Vehicle operating mode
Frequency of occurrence of
problem

when driving , when stationary
always

Administration
Author

ut0031h

Last modified by

RU4469V

Creation date

15-12-2016 17:12

Date of last update

22-02-2018 17:02

Review date

30-04-2017 00:04

Status

Published

Average score

2

Number of scores

2

NA_Author_Group

GTT

NA_MACK_Vehicle_Range
NA_MACK_Vehicle_Ran
ge

Cabover , LR , LEU , MRU , Conventional

NA_VOLVO_Vehicle_Range
NA_VOLVO_Vehicle_Ra
nge

Conventional , VNX , VNL , VNM , VHD , VAH

Engine family
Engine family

Volvo , 11L Engine , 13L Engine , 16L Engine , Mack , MP7 , MP8 , MP10

Emission Standard
Emission Standard

US17 GHG , US16 , US15 , US13 OBD , US14 GHG