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High Lambda MOT Failure FZJ80

Highlander

New Member
Joined
Mar 17, 2021
Messages
34
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scotland
Failed MOT with high lambda on the emissions test. This means it's running lean. Common explanation of this is an exhaust leak, but I haven't detected one. It's only 10% over, so unlikely to be a duff lambda sensor.

Anyone had experience of this with an FZJ80?

Thanks in advance
 
was it hot of cold for the test? VOSA failed my GR for Lamda over as they tested a brand new car stone cold! sailed through when I drove it there for retest.
 
Just to update this, new Lambda fixed my lean running issue

Removed the old one with heat so as not to shear the studs. Cleaned up the threads with a die, fitted a new Denso unit. It's all good
 
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