Author Topic: Lambda emissions fail  (Read 97 times)

Hera

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Lambda emissions fail
« on: 20:26:35, 11/09/20 »
Rover 25  2001  32,000 miles : new spark plugs : idle lambda fails . The new-Merc-driving  legislators wont change the crazy levels : so how do I get it through the test ?  Engine cleaner : new oil / filter ? remove air -filter ?  >:( Is it an exhaust leak as many say  is the main prob ? 

Manx

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Re: Lambda emissions fail
« Reply #1 on: 10:14:10, 12/09/20 »
If the Lambda sensor tests o.k then catalytic converter failure is likely.
 Checking the error codes will give an indication. Beware of aftermarket or non-original type catalytic converters as they almost certainly will fail the emission test,