Do it yourself
Frequently asked questions about cars and motorcycles
Car tutorial (Do it yourself) Motorcycle tutorial (Do it yourself) Frequently Asked Questions

Instructions for Replacing Lambda Sensor

Model: Fiat Punto MK 1, 176 - Years: 1993, 1994, 1995, 1996, 1997, 1998, 1999
Part: Oxygen sensor

See other generations:
Video tutorial

The lambda sensor, or oxygen sensor, detects the amount of oxygen present in the exhaust gases, and based on this parameter, the engine management unit adjusts the amount of fuel injected into the cylinders. An incorrect reading from the sensor will skew the operating parameters of the engine management unit, causing excessive fuel consumption.

Before the warning light comes on, this is indeed the first sign of a malfunctioning sensor. Since it is located just below the exhaust manifold, just behind the cooling fan, it is advisable to replace it when the engine is cold.

Unscrew the sensor, which appears as a large pin, then screw in the new one, ensuring the wiring passes through the appropriate housing before connecting the plugs and securing them in their respective locations.


Updated on 16 February 2026 by ScegliAuto


Related tutorials

How to Replace the Lambda Sensor on a Fiat Punto
How to Replace the Lambda Sensor on a Fiat Punto
Fiat Punto (1999-2011 / MK 2, 188) Is the Lambda sensor faulty? Let's see how to replace it on your Fiat Punto. Lift the front bonnet of your car and secure it. Remove the plastic engi…
How to Replace the Lambda Sensor of the Fiat Punto?
How to Replace the Lambda Sensor of the Fiat Punto?
Fiat Punto (1999-2011 / MK 2, 188) Replacing the lambda sensor in the Fiat Punto is straightforward; let's see how to proceed in this tutorial for the 1.2 petrol engine version. First,…
Removing the Exhaust Manifolds from the Fiat Punto
Removing the Exhaust Manifolds from the Fiat Punto
Fiat Punto (1999-2011 / MK 2, 188) In this guide, find the main instructions to remove and replace the exhaust manifolds on the Fiat Punto. First, open the bonnet of your car and begin…

How to Reset the Tyre Pressure Warning Light on a Kia Rio?

The tyre pressure warning light displayed on the instrument cluster of the Kia Rio can be reset by inflating the tyres until they reach the recommended pressure value: this value is indicated on the sticker affixed to the driver's door pillar. Once all tyres have been inflated to the recommended pressure, turn on the ignition to check that the light has disappeared: if it is still present, it may be necessary to drive for a few miles, allowing the sensors to work and thus turning off the light.

Watch the video!


by ScegliAuto

More videos