DEF Control Module Temperature Is High
Use this procedure if one of the following event codes are active. Refer to Troubleshooting, "Event Codes" for information about event codes. For information on the engine monitoring system, refer to Troubleshooting, "Engine Monitoring System".
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| Diagnostic Trouble Codes for DEF Control Module Temperature Is High | |||
|---|---|---|---|
| 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 Dosing Control Unit (DCU) has exceeded the trip point of |
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| |
| Illustration 1 | g03760956 |
| (1) Dosing Control Unit (DCU) | |
Complete the procedure in the order in which the steps are listed.
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| 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. If the fault is still present, contact the Dealer Solutions Network (DSN). |
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