PUMP GP-UNIT INJECTOR HYD 2954777 - Caterpillar

Table 1
J1939 Code and Description CDL Code and Description Comments
3361–5
Aftertreatment #1 DEF Pump #1 : Current Below Normal 3102–5
Aftertreatment #1 DEF Pump #1 : Current Below Normal This code indicates that there is a problem with the DEF injector and/or the electrical circuit for the DEF injector.
3361–6
Aftertreatment #1 DEF Pump #1 : Current Above Normal 3102–6
Aftertreatment #1 DEF Pump #1 : Current Above Normal This code indicates that there is a problem with the DEF injector and/or the electrical circuit for the DEF injector.
4376-5
Aftertreatment #1 DEF Return Valve : Current Below Normal 3862-5
Aftertreatment #1 Diesel Exhaust Fluid Return Valve Solenoid : Current Below Normal This code indicates that there is a problem with the Diesel Exhaust Fluid (DEF) Return Valve and/or the electrical circuit for the DEF Return Valve.
4376-6
Aftertreatment #1 DEF Return Valve : Current Above Normal 3862-6
Aftertreatment #1 Diesel Exhaust Fluid Return Valve Solenoid : Current Above Normal This code indicates that there is a problem with the DEF Return Valve and/or the electrical circuit for the DEF Return Valve.
5394–5
Aftertreatment DEF Dosing Valve : Current Below Normal 3821–5
Aftertreatment #1 Diesel Exhaust Fluid Dosing Valve Actuator : Current Below Normal This code indicates that there is a problem with the Aftertreatment #1 Diesel Exhaust Fluid (DEF) injector #1 and/or the electrical circuit for the DEF injector.
5394–6
Aftertreatment DEF Dosing Valve : Current Above Normal 3821–6
Aftertreatment #1 Diesel Exhaust Fluid Dosing Valve Actuator : Current Above Normal This code indicates that there is a problem with the Aftertreatment #1 DEF injector# 1 and/or the electrical circuit for the DEF injector.
5434-5
Aftertreatment #1 SCR Catalyst Reagent Tank Fill Valve Command : Current Below Normal 3605-5
Aftertreatment #1 DEF Tank Refill Solenoid : Current Below Normal This code indicates that there is a problem with the DEF Tank Fill Valve and/or the electrical circuit for the DEF Tank Fill Valve.
5434-6
Aftertreatment #1 SCR Catalyst Reagent Tank Fill Valve Command : Current Above Normal 3605-6
Aftertreatment #1 DEF Tank Refill Solenoid : Current Above Normal This code indicates that there is a problem with the DEF Tank Fill Valve and/or the electrical circuit for the DEF Tank Fill Valve.
5965–5
Aftertreatment #1 DEF Control Module Relay Control : Current Below Normal 3838–5
Aftertreatment #1 Diesel Exhaust Fluid Dosing Control Module Relay : Current Below Normal This code indicates that there is a problem with the Pump Electronic Tank Unit (PETU) main power relay circuit or the PETU main power relay.
5965–6
Aftertreatment #1 DEF Control Module Relay Control : Current Above Normal 3838–6
Aftertreatment #1 Diesel Exhaust Fluid Dosing Control Module Relay : Current Above Normal This code indicates that there is a problem with the PETU main power relay circuit or the PETU main power relay.
Table 2
Component Controller Electrical Checkout
DEF Injector Diesel Exhaust Fluid Controller (DCU) DEF Dosing System Verification Test: Initiate the "DEF Dosing System Verification Test" through Cat ET to activate the injector circuit.
PETU Main Power Relay A5:E2 Aftertreatment ECM Turn the keyswitch to the OFF position for 2 minutes. The keyswitch must be off for 2 minutes to allow