PSB E222: MY2017 and MY2018 Chassis, PACCAR MX-11/MX-13 with DTC P3912, ...

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Technical Information Bulletin
E222

Section
Inlet/Exhaust/Aftertreatment

Subject
MY2017 and MY2018 Chassis with PACCAR MX-11/MX-13 engines with DTC P3912, P3857, and/or P3926

Release Date
8/14/2018

Condition
DTC P3912, P3857, and/or P3926 may be caused by a plugged DEF dosing valve inlet screen. DEF dosing valve inlet screen
may be plugged with debris when corrosion on the DEF dosing unit heating element flakes off.

Chassis Affected
All MY2017 and MY2018 chassis with PACCAR MX-11/MX-13 engines and DEF pump module part number 2115624PE and
Doser part number 2115633PE.

Action
Fix-As-Fail

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If a customer comes into your shop and demonstrates the condition above, then verify the symptoms and/or listed Fault Codes
are present. Use the procedure below to make appropriate repairs.
For Cummins powered chassis, refer to Cummins TSB180047.

Warranty
Through Standard Warranty (includes Extended Warranty) Kenworth will pay for parts at dealer net plus applicable mark-up
and labor:
1.0 hour labor if the inlet screen is plugged and the corrosion on the heater is flaking off to remove the DEF
Pump, flush the lines, and replace the filters. Use Quick Claim code E222.
If the inlet screen is not plugged and corrosion on the heater is not flaking off, continue with your diagnosis and file a
standard claim.
File an additional claim for extraordinary circumstances. A quick claim for standard labor must be filed first.
Kenworth dealers may perform E222 repairs on Peterbilt chassis, but Quick Claims do not apply. For Peterbilt chassis repairs,
use the long claim input form in DWWC selecting "Draft/Offline Claims", the "General" tab, and in the "Type of Claim" drop
down box, select "PACCAR Engine Claim", then manually enter claim codes (Campaign #, Failure type, and SRT).
CLAIM CODING
Failure Location:

043-007-016

Work Accomplished:

35

Failure Type:

145

Responsibility Code:

05

SRT Code:

043-081
Claim Type:
DEF doser
module filter R&R
0.3 hrs. (Does not
include fairing or
step R&R for
access)
100-521
DEF Pump
Module Prime
Test 0.3 hrs.
100-524
Airless DEF flush
- MX engine 0.3
hrs.
043-825
SCR doser
Injector - R&R
0.10 hrs. (does
not include fairing
removal)

Vendor Code

86837

F

Parts
Parts are available from PACCAR Parts.
Quantity

Part Number

Description

1

2115624PE

UL2 pump/EAS pump module

1

2115633PE

UL2 doser/DEF dosing valve

1

2122909PE

FILTER KIT-DEF PUMP, EPA17

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PSB E222: MY2017 and MY2018 Chassis, PACCAR MX-11/MX-13 with DTC P3912, ...

1

2028048PE

GASKET, DEF DOSER

1

2127614PE

DPF Pump inlet screen/AdBlue pre-filter -AFTERTREATMENT INJECTOR KIT

1 gal

Distilled water

Source Locally

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Procedure
Make sure the heating element is free of DEF crystals. Remove DEF crystals by
washing with distilled water.
If DEF dosing valve inlet screen is plugged with debris, and corrosion on DEF Pump
Module heating element is flaking off.
DEF Pump Module and DEF dosing valve inlet screen must be replaced. DEF pressure line, between DEF dosing unit
and DEF dosing valve must be flushed with distilled water to remove any residual debris.
See Figure 1 for DEF Pump Module heating element location.
See Figure 2 for an example of a plugged DEF dosing valve inlet screen.
See Figure 3 for an example of a DEF dosing unit heating element with corrosion that is flaking off.

If DEF dosing valve inlet screen is not plugged with debris, and corrosion on DEF
Pump Module unit heating element is not flaking off.
Do not replace DEF dosing unit for this condition. All DEF Pump Modules will have some level of
discoloration/corrosion internally.
See Figure 4 for an example of a clean DEF dosing valve inlet screen.
See Figures 5, 6, and 7 for examples of DEF dosing units with acceptable levels of discoloration/corrosion.
Continue with troubleshooting to find the root cause of the issue. File a long form claim.
Figure 1 DEF Pump Module Heating Element Location

Figure 2 Plugged DEF Dosing Valve Inlet Screen Examples

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PSB E222: MY2017 and MY2018 Chassis, PACCAR MX-11/MX-13 with DTC P3912, ...

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Figure 3 Corroded DEF Pump Module Heating Element

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Figure 4 Normal DEF Dosing Valve Inlet Screen

Figure 5 Normal DEF Pump Module Heating Element Discoloration

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PSB E222: MY2017 and MY2018 Chassis, PACCAR MX-11/MX-13 with DTC P3912, ...

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Figure 6 Normal DEF Pump Module Heating Element Discoloration

Figure 7 Normal DEF Pump Module Heating Element Discoloration

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PSB E222: MY2017 and MY2018 Chassis, PACCAR MX-11/MX-13 with DTC P3912, ...

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Authored by: OF

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