- Engine:
- 3516C (S/N: SKC1-UP; SCJ1-UP; SCK1-UP; SFK1-UP)
- C175-16 (S/N: WYC1-UP)
Introduction
The problem that is identified below does not have a known permanent solution. Until a permanent solution is known, use the solution that is identified below.
Problem
Extended periods of the generator set running at high idle/no load can lead to the aftertreatment ECM logging a 3516-17 Catalyst Reagent Concentration : Low - least severe (1) code.
If the generator set is run at high idle/no load where the Clean Emission Module (CEM) does not reach the 200° C (392° F), the 3516-17 can log after 30 minutes of running. This code is a software issue.
Solution
- Verify that all probable causes have been checked and are within acceptable range. Refer to Troubleshooting, KENR6887 for more information.
- If extended periods of run time at high idle/no load operation are anticipated, power cycling of battery power will prevent the 3516-17 code from logging.
- If the 3516-17 code is active, 30 minutes of running the generator set under load is required.
The generator set load should be enough where the CEM inlet temperature is at least 250° C (482° F) for 30 minutes.
Once this threshold is reached, the 3516-17 code will become inactive.
Reference the Operation and Maintenance Manual for partial load operation.