Mick Gormley
As Gwyn has said check the secondary air pump as the lambda wont switch if its open circuit.
Cheers Mick
Message Thread 
Ford Galaxy 2.3 1998 - Code P0170 (system weak) # - Paul Howd May 18, 2011, 2:27 pm
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on May 19, 2011, 8:50 am, in reply to "