Allison WTEC II Fault Code: 64 PID: SPN: 12 FMI: Retarder modulation request sensor, failed low

Main code 64 indicates the ECU has detected a voltage signal from the retarder request modulation sensor (consisting of a module and a retarder control device) in either the high or low error zone. These codes can be caused by faulty wiring, faulty connections to the resistance module or retarder control device, a faulty resistance module, a faulty retarder control device, or a faulty ECU. Power wire 133 and ground wire 135 for the retarder modulation request sensor share a common power and ground with the TPS and OLS devices. A short-to-ground on the common power wire causes a ?sensor failed low? code for the other devices (Codes 21 12, and 14 12). An open or a short-to-ground on retarder modulation request sensor signal wire 164 results in a Code 64 12 only.

Categories Allison, DTC TRUCKS, WTEC II Tags 12, 64, Allison, Code, failed, Fault, FMI, II, Low, modulation, PID, request, Retarder, Sensor, SPN, WTEC

Detroit Diagnostic Link DDDL 8.17
Detroit $96.00
Rated 0 out of 5
ZF Testman Pro ESB 10.5 2022
Trucks software $200.00
Rated 0 out of 5
CAT ET 2021A (Caterpillar Electronic Technician) + Factory Password (1 PC )
CAT $65.00
Rated 0 out of 5
Wabco ToolBox plus 13.7 + ECAS CAN2 v3.00 Diagnostics Software
Trucks software $84.00
Rated 0 out of 5
Cat Factory Password Generator 1.0 2019 WINDOWS 10
CAT $55.00
Rated 0 out of 5

CAT ET 2022A Advanced diagnostic software for Caterpillar equipment
CAT $95.00
Rated 0 out of 5
Cat Factory Password Generator 1.0 2019 WINDOWS 10
CAT $55.00
Rated 0 out of 5
Isuzu G-IDSS Global 2024 Diagnostic Software
ISUZU $220.00
Rated 0 out of 5
DAF Davie Runtime v5.6.1 Davie XDc ll [02.2019] + Expire Fix 302.00 Unlock ( Windows 7 )
DAF $70.00
Rated 0 out of 5
Download Renault Trucks NG3 NG10 calculator v0.1
Renault $26.00
Rated 0 out of 5
JCB ServiceMaster 4 v21.4.2 [05.2021] Diagnostic Software
JCB $85.00
Rated 0 out of 5
Nexiq eTechnician 1.3.62 2020 etechnician software
NEXIQ $50.00
Rated 0 out of 5
JOHN DEERE SERVICE ADVISOR 5.3.225 DATABASE AG + CF ENGLISH 2023
John Deere $250.00
Rated 0 out of 5
Volvo Penta EPC 6 Offline VMware [12.2021] VMware
Trucks software $64.00
Rated 0 out of 5
Eaton Service Ranger 4 4.2 database 2017
Eaton $50.00
Rated 0 out of 5
ISUZU G-IDSS Domestic Japan 2024 Diagnostic Software
ISUZU $220.00
Rated 0 out of 5
DPF EGR SCR BAC ERG Delete & Flash CAAT Cummings Detroit Dodge Mack Volvo Collection of DELETE files
CAT $200.00
Rated 0 out of 5
VOLVO PTT TECH TOOL 2.8.220 2023 Last version 1pc
Trucks software $200.00
Rated 0 out of 5
Freightliner ServiceLink 4.9.6
Freightliner $30.00
Rated 0 out of 5
VOLVO PREMIUM TECH TOOL PTT 2.7.116 + APCI 2021 + devtool ( ONLINE )
Trucks software $80.00
Rated 0 out of 5

SERVICE MANUAL BOBCAT 2200 2300 sms
BOBCAT $54.00
Rated 0 out of 5
SERVICE MANUAL BOBCAT 440-443-443b sms
BOBCAT $45.00
Rated 0 out of 5
SERVICE MANUAL International Engines MaxxForce 5 (2007 & 2009)
INTERNATIONAL ENGINES $25.00
Rated 0 out of 5
SERVICE MANUAL BOBCAT 3400 sms
BOBCAT $40.00
Rated 0 out of 5
service manual TroubleshootingManual Allison TransmissionMD/HD/B -Series -TransmissionsWTEC II Controls
Allison $25.00
Rated 0 out of 5
MANUAL SERVICE DEUTZ AGROTRON 130-140-155-165 MK3
DEUTZ $37.00
Rated 0 out of 5
SERVICE MANUAL BOBCAT 863 sms
BOBCAT $62.00
Rated 0 out of 5
SERVICE MANUAL HINO FD.FE.FF.SG 2003
HINO $37.00
Rated 0 out of 5
SERVICE MANUAL DETROIT Earings – Technicians Guide
DETROIT $18.00
Rated 0 out of 5
SERVICE MANUAL VOLVO D16 (2009)
TRUCK MANUALS $30.00
Rated 0 out of 5