EngineCheck and VauxCheck ELM327 USB Package

Will it reset the ECU and Check Engine light?

These interfaces will allow you to erase the fault codes from the ECU memory, and switch off the 'Check Engine' light (or Malfunction Indicator Light (MIL)).

In erasing the codes, they reset the ECU, which also erases any 'learned' settings, e.g. fuel trim adjustments. These will be re-learned automatically by the car during subsequent drive cycles.

Resetting the ECU is not harmful to the car.

Will it reset Airbag, ABS or Service lights?

No, the tools will not reset these lights, or read codes from these systems.

These packages communicate with the EOBD/OBDII systems in the car, which are primarily the engine/emissions diagnostic systems. These are linked to the 'Check Engine' or 'Malfunction Indicator Light' (MIL).

The packages will reset the 'Check Engine' light, and will clear any associated fault codes.