How does the fault code work on a Cummins Engine?
The Electronic Control Module (ECM) in the engine monitors all the readings constantly as the engine runs. If the values go over or drop under what is expected, then the ECM will log a fault code. There are three fault code statuses: Inactive: If it happens at a time outside of diagnostics, then it’s inactive.
What does a fault code on a diesel mean?
Fault codes indicate that the engine is experiencing a problem. Every circuit and sensor in a modern diesel engine gives off a certain reading and specific voltage signal. The Electronic Control Module (ECM) in the engine monitors all the readings constantly as the engine runs.
When does an ECM log a fault code?
If the values go over or drop under what is expected, then the ECM will log a fault code. There are three fault code statuses: Inactive: If it happens at a time outside of diagnostics, then it’s inactive. Active: If the error happens during diagnosis, then it’s an active fault. Pending: A pending code is one that hasn’t been cleared.
How do you clear a Cummins diagnostic network code?
Matthew based on my experience after running the scr test the codes should go from active to inactive after an extended idle for a minute or two once it goes inactive then you can clear the codes. The scr test has to pass of course. I did the test and it passed, no luck on this truck.
What happens when a fault code is not cleared?
Refer to the appropriate fault code troubleshooting tree. The ECM will turn off the red STOP ENGINE lamp immediately after the diagnostic runs and passes. 3714 – Engine Protection Torque Derate- Condition Exists Conditions for Clearing the Fault Code This fault code will go inactive once all other active fault codes have been addressed.
Is there an OTR reset tool for Cummins?
Other Heavy Duty Models that use Cummins engines. NOTE: Does not work on Light-Duty Dodge trucks. What comes with the tool? NOTE: OTR Diagnostics will not work with the OTR Reset Tool. In less than 1 minute, handle DTC issues including… Reset Active Fault Codes. Fault codes that determine that there is an existing issue.