Boost leak related to O2 sensor issue?

Basedtiger · 06-05-2018, 08:18 PM

Hello I'm getting P2195, P2414 and P0171 codes which are related to a O2 sensor, in this case its running lean. Bank 1 sensor 1 seems to be the problem. I have a small boost leak where the outlet connects to the intercooler. The O-ring is bad and connection becomes loose. Could it be running lean due to the boost leak? The O-ring is on the way. The reason I'm asking is because I got the check engine light due to these codes after the boost leak. Thanks.

Emilime75 · 06-05-2018, 10:26 PM

Not likely, since intake air and MAP are measured after the leak. Fix the boost leak, since that's a known, no reason not to. Then see if O2 sensor and codes come up. Not good to run lean, one of the biggest engine killers.

06-05-2018, 08:18 PM	#1
Basedtiger Private First Class 41 Rep 117 Posts Drives: BMW 335i Join Date: Dec 2017 Location: Modesto, CA iTrader: (0)	Boost leak related to O2 sensor issue? Hello I'm getting P2195, P2414 and P0171 codes which are related to a O2 sensor, in this case its running lean. Bank 1 sensor 1 seems to be the problem. I have a small boost leak where the outlet connects to the intercooler. The O-ring is bad and connection becomes loose. Could it be running lean due to the boost leak? The O-ring is on the way. The reason I'm asking is because I got the check engine light due to these codes after the boost leak. Thanks.
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06-05-2018, 10:26 PM	#2
Emilime75 Colonel 1209 Rep 2,476 Posts Drives: 2010 335i E92 LeMans Blue Join Date: Dec 2017 Location: Merica! iTrader: (1)	Not likely, since intake air and MAP are measured after the leak. Fix the boost leak, since that's a known, no reason not to. Then see if O2 sensor and codes come up. Not good to run lean, one of the biggest engine killers.
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