Philip Dunmore
Hi Glynn. Post cat sensor is reading lean, pre cat is cycling correctly. Just noticed there is a flexible ball joint in pipe between cat and secondary sensor. Has evidence of a small leak. genuine seal on order.
Watch this space...
Phil
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Citroen C1 998cc 2014 - Code P0137 O2 sensor voltage low - Fixed # - Phil Dunmore December 24, 2018, 12:35 pm
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on December 27, 2018, 9:26 am, in reply to "