Coolrasch84

Check Engine light and error code P2177 in a Seat Exeo

Hello everyone, I own a 2011 Seat Exeo with a gasoline engine and 122,000 km on the odometer. For some time now, the check engine light has been on and I'm getting the error code P2177, which indicates a lean mixture on bank 1. At 114,500 km, the engine was overhauled and I replaced the mass air flow sensor, but I didn't find any vacuum leaks. When I clear the error, it reappears after about two weeks. However, I drive very little, only about 1200 km per year. Does anyone have an idea what could be causing this or what I should check next? Thank you very much in advance for your help!

(Translated from German)

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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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!

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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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