WASHER 4907407 - Caterpillar

Table 1
Diagnostic Trouble Codes    
J1939 Code    CDL Code    Code Description
(code descriptions may vary)    Comments    
5480-16     E1430 (2)     Aftertreatment 1 Diesel Exhaust Fluid Controller Temperature : High - moderate severity (2)     The temperature of the Diesel Exhaust Fluid Control Unit (DCU) has exceeded the trip point of 116° C (240° F).    
Illustration 1 g02931976
Complete the procedure in the order in which the steps are listed.
Table 2
Troubleshooting Test Steps    Values    Results    
1. Determine the Source of the High Temperature
A. Evaluate the installation location of the DCU.
B. Check for heat sources close to the DCU.
   
Heat Source
   
Result: The DCU is located close to a heat source.
Repair: Eliminate the heat source by installing a heat shield or moving the component creating the heat.
Proceed to Test Step 2.
   
2. Replace the DCU
A. Replace the DCU.
    DCU    
Result: The DCU was replaced.
Verify that the problem is resolved.