Change the lambda probe on Opel Corsa D

Written By: dimitri.molusson (and one other contributor)

Difficulty

Easy

Steps

Time Required

00:05:00 - 00:10:00

Introduction

This tutorial will show you the steps to replace the lambda sensor on Opel Corsa D petrol, the one located before the catalyst.

This does not take much time. A special tool will be required (lambda sensor socket).

It is advisable to apply penetrating oil the days before changing the probe to make it easier to unscrew.

Locate the lambda probe (circled in red) and its connector (circled in blue)
Disconnect the connector
Using a flat-head screwdriver, push the plastic clip to the right as far as it will go.
Shift the connector to the right, then separate the two parts.
Dislodge the probe wire by lifting the metal tab (orange arrow)

With a 22 mm lambda probe wrench, or here a lambda probe socket (circled in yellow) and a ratchet, unscrew the probe. This can be very hard to unscrew (use penetrating oil several days before if necessary)
Clean the area around the probe to accommodate the new probe.
If possible, clean the threads in the catalytic converter with a tap (circled in red) of the correct size.

Compare the new and old probe, the thread and connector should be the same. The probe wire should have sufficient length.
If possible, and if the new probe does not have one, add a dab of copper grease (at the end of the yellow arrow) to the thread
Screw the new probe with the lambda probe key or the socket + ratchet (22mm). If possible tighten to a torque of 47nm