Peugeot Repair Questions? Ask a Mechanic for Answers ASAP
an emissions warning usually means a problem with the oxygen sensor in the exhaust
to confirm this then by far the best route is to plug in a scan tool and pull off the fault code
as while the o2 sensor is very likely it could also be a problem with the DPF clogging up or a lack of Adblue fluid
so I don't want you to start replacing parts without a fault code to back it up
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