Some days ago on my Volvo 240 '93 lambda probe is always on.
Any ideas.

Andrea, Italy

Andrea1717 wrote:

What do you mean? Is the lambda warning light illuminated, or is the
output of the O2 sensor high and not oscillating?

James Sweet wrote:


Excuse me...I mean lambda warning light.

Thank

Andrea1717 wrote:

In my 240 the lambda light was on a timer that turned it on after a set
number of miles as a reminder to have the emissions system inspected.
Later US spec cars have onboard diagnostics that store fault codes, but
depending on where you are that might not be the case.