Software Update for Diesel Exhaust Fluid (DEF) Quality Sensor on Certain C4.4 Machine Engines {108K, 1920} Caterpillar

Asphalt Compactor

CB64B (S/N: C561-309)

Asphalt Paver

AP555F (S/N: AP51-182)

AP655F (S/N: MH61-262)

Backhoe Loader

420F2 ST (S/N: HWC1-2214)

428F2 (S/N: HWN1-670)

430F2 IT (S/N: HWG1-234,236-463)

Compact Wheel Loader

910M (S/N: H221-244)

918M (S/N: H261-342)

Excavator

313F (S/N: NLG1-10063)

316F (S/N: YDL1-1,134-363,10001-10146)

320 (S/N: KTN1-105)

320F (S/N: YBM1-1,159-416,10001-10258)

325F (S/N: XAA1-181,183-474,10001-10248,10250-10257,10259-10260,10262-10262; YCA1-384,10001-10256)

Pneumatic Compactor

CW34 (S/N: AL31-227)

Telehandler

TL1055D (S/N: ML51-764,767-947)

Track-Type Tractor

D3K2 (S/N: KF21-1,113-114,150-263,2110-2280; KL21-123,175-206,208-477,2120-2369,2470-2739; JPJ1-208,2170-2179,2190-2208)

D4K2 (S/N: KM21-1,150-160,163-169,171-355,2130-2367; KR21-1,142-142,175-346,2140-2265,2267-2415)

D5K2 (S/N: KW21-151,154-155,200-672,2150-2241,2243-2701; KY21-162,164-164,225-933,2160-3047,3049-3103,3105-3132; RRE1-266,2180-2180,2182-2218)

D6K2 (S/N: DFR1-437; JTR1-1,200-698)

Vibratory Soil Compactor

CP54B (S/N: P541-173)

CP56B (S/N: 4851-110; P561-352)

CP68B (S/N: P681-102)

CP74B (S/N: 4911-1; P741-103)

CS56B (S/N: 4841-164; S561-489)

CS64B (S/N: CW61-108; 4861-161)

CS66B (S/N: S661-129; 4871-272)

CS68B (S/N: CS81-105; 4881-126)

CS74B (S/N: 4901-130; CS41-113)

CS76B (S/N: 4921-132)

CS78B (S/N: 4931-133; S781-108)

Wheeled Excavator

M314F (S/N: FB41-397; F4A1-663)

M316F (S/N: FB61-281; F6N1-303)

M317F (S/N: F6P1-330)

The Diesel Exhaust Fluid (DEF) quality sensor is not enabled on certain C4.4 engines that were built before 2017.

New engine software can allow the DEF quality sensor to be enabled. The DEF quality sensor provides greater accuracy of DEF concentration.

Caterpillar recommends that the engine software is updated to the latest version. The latest version of the engine software will allow the DEF quality sensor to be enabled.

Follow step 1 to step 7 to install the engine software and enable the DEF quality sensor.

Note: Factory passwords are required to complete the procedure. Refer to Troubleshooting, ECM Software - Install for more information.

1. Install the latest version of the engine software. Refer to Troubleshooting, ECM Software - Install for the correct procedure.

2. In the electronic service tool, go to the "Service" menu and select "Configuration".
   Show/hide table

   Illustration 1	g06218622
   Typical example

3. Open "Aftertreatment Configuration". Double-click "Aftertreatment #1 DEF Quality Sensor Installation Status" (1).
   Show/hide table

   Illustration 2	g06218586
   Typical example

4. Select the "OK" option when the dialog box appears. Refer to illustration 2.
   Show/hide table

   Illustration 3	g06218594
   Typical example

5. Change "New Value" to "Installed". Refer to illustration 3.
   Show/hide table

   Illustration 4	g06218597
   Typical example

6. Select the "Yes" option when the dialog box appears. Refer to illustration 4.

7. Enter the correct factory passwords.

   The DEF quality sensor is now installed.