Diesel Exhaust Fluid Quality Sensors May Have Fault Codes on Certain Tier 4 Final Engines {108H, 108K, 1439} Caterpillar

Articulated Truck

725C (S/N: TFB837-UP)

725C2 (S/N: 2T3270-UP)

730C (S/N: TFF1414-UP)

730C EJECTOR (S/N: TFH161-UP)

730C2 (S/N: 2T4498-UP)

730C2 EJ (S/N: 2T5141-UP)

735C (S/N: TFJ264-UP)

740C EJECTOR (S/N: TFN190-UP)

745 (S/N: 3T6156-UP)

745C (S/N: TFK1601-UP)

Cold Planer

PM620 (S/N: JB9142-UP)

PM622 (S/N: JFC135-UP)

Engine

C13 (S/N: N3F2234-UP)

C15 (S/N: N5F1010-UP)

C18 (S/N: N8F759-UP)

Excavator

336F (S/N: B3990202-UP; TZA10015-UP; RKB10063-UP; RBC10002-UP; YFD10013-UP; TJE10001-UP; DKF10002-UP; YBH10010-UP; ZBJ10002-UP; LCL10004-UP; NBL10005-UP; PFL10006-UP; SSN10045-UP; LTP10020-UP; KCS10038-UP; NBS10005-UP; KFT309-UP; DSW10005-UP; MTW179-UP; DFY10009-UP; LJY10008-UP; WTZ251-UP)

340F (S/N: RBD10010-UP; XBD146-UP; YBF10006-UP; EAR10004-UP; WBX132-UP)

349F (S/N: BZ210027-UP; KEA10010-UP; HLB10005-UP; HPD10036-UP; SFG116-UP; TEW10001-UP; RAX10004-UP)

352F (S/N: SD210006-UP; WNA10003-UP; YEG10003-UP; A9J10001-UP; XAL10002-UP; KBP10007-UP; MDR10003-UP)

374F (S/N: AT2161-UP; DNM10011-UP)

390F (S/N: MGF10007-UP)

Industrial Engine

C13 IND (S/N: JR9312-UP)

C9.3 (S/N: CS91499-UP)

Landfill Compactor

826K (S/N: 2326268-UP)

836K (S/N: T6X1-UP; L6Z1-UP; TWZ604-UP)

Material Handler

MH3295 (S/N: PA9304-UP)

Mobile Hydraulic Power Unit

336FMHPU (S/N: B3410002-UP; B3510003-UP)

374F MHPU (S/N: DP410003-UP)

390F MHPU (S/N: B3710002-UP)

Motor Grader

12M Series 3 (S/N: N9B430-UP; N9F683-UP; N9P222-UP; N9R278-UP)

140M Series 3 (S/N: N9D768-UP; N9G228-UP; N9J525-UP; N9M477-UP)

14M Series 3 (S/N: N9S236-UP)

160M Series 3 (S/N: N9E111-UP; N9K128-UP; N9L152-UP; N9T213-UP)

16M Series 3 (S/N: N9Y231-UP)

18M Series 3 (S/N: N9A228-UP)

OEM Excavator Based Specialty Solution

390F OEM (S/N: PT7103-UP)

Off-Highway Truck/Tractor

770G (S/N: RMA102-UP; KDH368-UP)

772G (S/N: RME100-UP; KEX267-UP)

Pipelayer

PL83 (S/N: CB2176-UP)

PL87 (S/N: TEC171-UP)

Reclaimer Mixer

RM500B (S/N: MB9152-UP)

Soil Compactor

825K (S/N: 2335022-UP)

Track-Type Loader

973 (S/N: MKL304-UP)

Track-Type Tractor

D6T (S/N: CR3128-UP; 2B3101-UP; MB5225-UP; MH7329-UP; CG8110-UP; 7C9100-UP; SGA106-UP; RAD1036-UP; STE128-UP; JML252-UP; MEL235-UP; JNM300-UP; WRN583-UP; K1R101-UP; KMR635-UP; WES417-UP; HYT275-UP; SGT533-UP; TMY386-UP; HTZ706-UP; SGZ100-UP)

D7E (S/N: HKA489-UP; SSH391-UP)

D8T (S/N: FMC777-UP)

D9T (S/N: REX482-UP)

Wheel Dozer

824K (S/N: 2344010-UP)

834K (S/N: TW41-UP; L4Y1-UP; TWY708-UP)

Wheel Loader

966M (S/N: EJA1487-UP; DYC1344-UP; KJP2469-UP)

966M Series XE (S/N: B8P321-UP)

972M (S/N: LSJ1550-UP; A8P1540-UP; JPR938-UP)

972M Series XE (S/N: M5S222-UP; EDW888-UP)

980M (S/N: KRS2511-UP; N8T896-UP)

982M (S/N: F9A411-UP; K1Y1541-UP)

986K (S/N: MH8173-UP)

988K (S/N: T8E1-UP; L8X1-UP; TWX1163-UP)

Wheel Tractor-Scraper

621K (S/N: WTA119-UP; WTE123-UP)

623K (S/N: WTB221-UP)

627K (S/N: WTC257-UP)

631K (S/N: WTR103-UP)

637K (S/N: WTS113-UP; WTT102-UP)

Introduction

The problem that is identified below does not have a known permanent solution. Until a permanent solution is known, use the solution that is identified below.

Problem

The diesel exhaust fluid (DEF) quality sensors are susceptible to seeing the following fault codes.

Solution

The latest software available in SIS has improvements in it related to the DEF quality sensor and these fault codes.

• Ensure that the latest engine and aftertreatment software is installed prior to any hardware replacements.

• Ensure that the latest DCU software is installed ( 539-3577 Engine Software (24V DCU) or 539-3576 Engine Software (12V DCU)).

• In addition to the troubleshooting for these fault codes in SIS web, ensure that DEF quality is checked with both a refractometer and the 466-8796 Test Strips as outlined in Diesel Exhaust Fluid Quality - Test procedure in SIS.

• Keep the DEF tank full when machine/engine will not be operated for an extended period of time to help reduce manifold exposure to ammonia gases in the DEF tank.

Have seen cases of contamination where the test strips will not detect it if contamination is not hydrocarbon-based. In these instances, the DEF will appear to be cloudy when doing a visual comparison to a good, clean DEF sample.

While working through issues related to these particular fault codes, email Blunier_Derek_W@cat.com to provide troubleshooting information and documentation as to what was found.

Information to Provide

• PSRPT with histograms

• Application History File

• All troubleshooting results

If the DEF manifold does get replaced, provide the following:

• Dealer code

• Workorder number

• Serial number

• Hours at repair

• DEF sample collected from top level of tank to be returned along with the DEF manifold

A Send It Back (SIB) will be created to get the DEF manifold returned.

Downloading an Application History File

Illustration 1	g06233931

1. Click the appropriate ECM.

2. Click "Information".

3. Click "Warranty Report".
   Show/hide table

   Illustration 2	g06233935

4. Click "ECM Information".

5. Click the "Yes" button.
   Show/hide table

   Illustration 3	g06233938

6. Click "Additional Service".

7. Click the "Save" button.