Tip: In the process of diagnosis, if the device shows “System is OK” or “No Trouble
Code”, it indicates that the ECU has not detected a fault in any of the circuits that it
monitors. If there is a fault which is not being recorded it may be that the fault is
with a part of the system not under the control of ECU, such as a mechanical system
fault. It is also possible that the signal of a system sensor may be incorrect but still
within the ECUs stored limits, this can be verified in Live Data.
4.5. Clear DTCs
4.5.1. Return to the previous step, select Clear Fault Codes to clear the current and
historical trouble codes memory in ECU. Performing this function will clear all the
current and historical trouble codes. Please ensure that the trouble codes have been
recorded before clearing, shown below:
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