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    Yellow warning light.

    Apologies it should have read p0301/ p0304 engine misfire detected.Coil packs replaced yellow light still showing and still reading P0171 System too Lean (Bank 1)" very frustrating..
  2. N

    Yellow warning light.

    Am currently driving E class 200 kompressor w211 but have experienced difficulty in last 3 weeks with the yellow warning light.Diagnostic read too problem with mix code p0171 therefore problem with oxygen lambda sensor which I replaced and also replaced air filter and 4 new spark plugs.Car was...
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