At the end of the procedure, the ignition key should be turned off. Another option is to select “erase all faults” and then follow the onscreen instructions. The displayed codes can generally be clicked on one by one. Using a code reader tool, connect to the ECM and find the “fault codes” tab. Software and a diagnostic tool are generally needed for this. Once any necessary engine repairs have been made, the next thing to know is how to clear fault codes. The newer the engine, the more detailed the fault codes in most cases. There are many new ones that don’t exist for the previous engine as well. The ISX fault codes for the 2007 – 2010 engine are more detailed than the earlier engine. For the latter, 111 has a more specific error: ECM Critical Internal Failure. For the former, the 111 fault code stands for Electronic Control Module. There are dozens if not hundreds of fault codes and they are different with each engine, so it’s important to search for information about specific engines when looking for fault codes.įor example, the list of ISX fault codes without EGR prior to 2002 is a different list from the 2007 2010 ISX fault codes with DPF. Sometimes several drive cycles are necessary to clear the code out of active status. For example, a code can be active after the problem has been repaired. Pending codes can also be intermittent faults or faults that need to be “seen” in at least two warm-up cycles to set them to active.
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