✨Advantage ：

· Higher Fuel Consumption

If the sensor isn’t working properly the ECU isn’t getting any feedback about the status of the exhaust gasses, so there’s no way for the computer to know or work out the necessary fuel mixture or air-to-fuel ratio. This forces the ECU to assume a worst-case scenario and run a rich fuel mixture to ensure maximum power in poor conditions.

· Unstable Idle

Again, since the ECU has no way of knowing what’s going on with the engine, it has to assume a worst-case scenario. Fuel injectors designed to maintain a constant flow of fuel to the engine will sporadically starve and surge, neither of which is good for your car in the long run.

· Engine Warning Lights

Perhaps the most obvious one yet, but definitely the one most people usually ignore. Although the sensor itself isn’t mounted inside the engine bay, any failure of the Nox sensor will trigger an engine warning light. It’s not a bulletproof method of finding Nox sensor faults and issues, but it does paint a much clearer picture of what your car’s experiencing. Scanning for error codes after a check engine light usually reveals whether you’re dealing with a broken Nox sensor right away.