Coolrasch84
Check Engine light and error code P2177 in a Seat Exeo
(Translated from German)
Summary of the thread
A 2011 Seat Exeo owner is experiencing a persistent check engine light with error code P2177, indicating a lean mixture on bank 1. Despite a recent engine overhaul and mass air flow sensor replacement, the issue persists. A suggested solution is to inspect the fuel system, particularly the fuel filter and fuel pressure, as a clogged filter or incorrect pressure could cause a lean condition.
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3 comment(s)
Aurel
Hello, I own a 2010 Audi S3 with 130,000 km. The idle is unstable, it accelerates on its own and then drops back down. It has a fault code P0171. Fuel filter replaced Spark plugs and relay replaced Mass air flow sensor replaced PCV valve replaced Thank you for your help
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CarlyMechanic
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Hello, I own a 2010 Audi S3 with 130,000 km. The idle is unstable, it accelerates on its own and then drops back down. It has a fault code P0171. Fuel filter replaced Spark plugs and relay replaced Mass air flow sensor replaced PCV valve replaced Thank you for your help
Inspect the intake manifold and throttle body for any carbon buildup or blockages that might affect airflow. Cleaning these components can sometimes resolve idle issues. After cleaning, see if the idle stabilizes. Let me know if this helps or if you have any further questions!
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SEAT
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EXEO
CarlyMechanic
Check the fuel system for any issues, starting with the fuel filter. A clogged fuel filter can restrict fuel flow, leading to a lean condition. If the filter hasn't been replaced recently, consider doing so. Also, inspect the fuel pressure to ensure it's within the manufacturer's specifications. Let me know how it goes or if you have any further questions!