203 T870 Operation & Maintenance Manual
DIAGNOSTIC SERVICE CODES (CONT'D)
Service Codes List (Cont’d)
CODE DESCRIPTION CODE DESCRIPTION
U00436322 SCR post-treatment temperature fault U00503519 NOX post-treatment CAN communication fault
U00436325 SCR downstream temperature sensor tampering U00503619 NOX post-treatment CAN communication fault
U00436400 NOX pre-treatment fault U00503719 NOX post-treatment CAN communication fault
U00436401 NOX pre-treatment fault U00543510 Pressure stabilization fault
U00436416 SCR fault U00543512 General pressure check fault
U00436418 SCR fault U00543529 DEF pump motor fault
U00436420 SCR fault U00570622 Supply module heater fault
U00436421 SCR fault U00570623 Supply module heater fault
U00436422 SCR fault U00570624 Supply module heater fault
U00436423 SCR fault U00570626 Supply module heater temperature fault
U00436503 DEF temperature sensor open circuit U00570627 Supply module heater temperature fault
U00436504 DEF temperature sensor short to ground U00570703 Supply module heater short to battery
U00436511 DEF temperature sensor failure U00570704 Supply module heater short to ground
U00437423 DEF pump motor speed fault U00570705 Supply module heater open circuit
U00437424 DEF pump motor speed fault U00570712 Supply module heater overtemperature
U00437428 DEF pump motor speed fault U00570723 Supply module heater temperature duty high
U00437430 DEF pump motor speed fault U00570724 Supply module heater temperature duty low
U00437503 DEF pump motor short to battery U00570726 Supply module heater temperature fault
U00437504 DEF pump motor short to ground U00570727 Supply module heater temperature fault
U00437505 DEF pump motor open circuit U00571302 NOX sensor self diagnostics
U00437512 DEF pump motor overtemperature U00571307 NOX sensor self diagnostics
U00437523 DEF pump motor fault U00571319 NOX sensor self diagnostics
U00437524 DEF pump motor fault U00571402 NOX sensor self diagnostics
U00437603 DEF backflow pump short to battery U00571407 NOX sensor self diagnostics
U00437604 DEF backflow pump short to ground U00571419 NOX sensor self diagnostics
U00437605 DEF backflow pump open circuit U05990419 CAN communications fault
U00437612 DEF backflow pump overtemperature U06016019 CAN communications fault
U00476500 DOC pre-treatment temperature too high U06041619 CAN communications fault
U00476501 DOC pre-treatment temperature too low U06144419 CAN communications fault
U00476503
DOC pre-treatment temperature sensor out of
range high
U06145419 CAN communications fault
U00476504
DOC pre-treatment temperature sensor out of
range low
U06145519 CAN communications fault
U00502419 NOX pre-treatment CAN communication fault U06463919 Memory fault
U00502519 NOX pre-treatment CAN communication fault U06463931 Memory fault
U00502619 NOX pre-treatment CAN communication fault U06478219 CAN communications fault
U00502719 NOX pre-treatment CAN communication fault U06478319 CAN communications fault
U00502819 NOX pre-treatment CAN communication fault U06478419 CAN communications fault
U00502919 NOX pre-treatment CAN communication fault U06478519 CAN communications fault
U00503019 NOX pre-treatment CAN communication fault U06480019 CAN communications fault
U00503119 NOX post-treatment CAN communication fault U06481719 CAN communications fault
U00503219 NOX post-treatment CAN communication fault U06488919 CAN communications fault
U00503319 NOX post-treatment CAN communication fault U06491619 CAN communications fault
U00503419 NOX post-treatment CAN communication fault U06492319 CAN communications fault
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