Cheap Fiat 500e Lambda Sensor

No — the Fiat 500e is a fully battery-electric vehicle with no internal combustion engine, no exhaust system, and no catalytic converter, which means it never had a lambda sensor fitted at any point in its production. Lambda sensors exist to measure oxygen levels in exhaust gases and feed data back to a petrol or diesel engine management system, none of which are present on an electric drivetrain. If your vehicle is showing a sensor-related fault, you may be thinking of a different model — the conventional petrol Fiat 500 (non-e) does use lambda sensors and that may be what you need.

It's a common mix-up: the Fiat 500e shares its name and body styling with the petrol Fiat 500, but the two are completely different vehicles under the skin. If you have the electric 500e, there is no exhaust, no oxygen sensor, and no lambda sensor to replace. If your car is actually a petrol Fiat 500 (1.0, 1.2, or 1.4 engine variants), then a lambda sensor is the right part — search using your registration and engine code to make sure you get the correct upstream or downstream sensor for your specific engine and emissions spec.

If your 500e is returning a code that looks like a lambda or oxygen sensor fault, it is worth having the diagnostic read properly by an EV-specialist or Fiat dealer, as the code may be misleading or relate to a completely unrelated sensor on the high-voltage or thermal management system. The 500e has no exhaust oxygen sensors whatsoever, so a genuine lambda sensor code would point to a misread, a diagnostic tool error, or the possibility that the vehicle is not actually an electric 500e. A breaker cannot help you with a lambda sensor for this car, but an auto electrician familiar with EVs would be the right next step.

No — there is simply nowhere to fit it, as the 500e has no exhaust manifold, no catalytic converter, and no exhaust pipework of any kind. The petrol 500 and electric 500e share very little mechanically despite looking similar from the outside, and exhaust components from one will never transfer to the other. If you need a lambda sensor, the part you want is from a petrol Fiat 500, not the 500e, and you should confirm the engine code and year with the breaker to get the right one.