Peugeot 308 508 1.6 BlueHDi DV6 EGR Valve Stuck
The EGR valve on 308/508 1.6 BlueHDi can stick permanently open or closed causing rough running. Stuck open: rough idle; stuck closed: increased emissions and boost issues. Cleaning resolves most cases. Cost: £150-250.
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No commonly reported misdiagnoses for this fault yet. If you have replaced a part that did not fix this Peugeot 308 2014 problem, submit a wrong diagnosis report — it helps other drivers avoid the same costly mistake.
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