Question about BMW X3 Series

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Today on motorway my x3 2.0d 2005 has smog and drive just on three cilinders code p1278 any help or comon isue?

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  • 13 Answers

Has to do with air intake, turbo stuck or damage or the sensor that detects the amount of movement may be faulty, intake swirl flaps dont open or has broken and got in the engine. do a compression test first.

Posted on Jun 17, 2016

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Posted on Jan 02, 2017

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SOURCE: 1979 ford ranger, did not pass smog

Oxygeb sensor failure or EGR not working, bolcked passages.

Go to autozone and get failure codes for free if newer than 1996.

Posted on Jun 10, 2009

charleshucke
  • 1114 Answers

SOURCE: What causes the P1278 code

CODE P1278- HEATED OXYGEN SENSOR 1 SLOW RESPONSE.POSSIBLE CAUSE EXHAUST LEAK AT EXHAUST MANIFOLD OR PIPES.FAULTY PRESSURE REGULATOR LEAKING OR FUEL INJECTORS LEAKING.AND FAULTY TPS SENSOR

Posted on Jan 23, 2011

emissionwiz
  • 77499 Answers

SOURCE: 2005 nissan blowing blue smoke

You will need to rebuilt the engine on this problem or replace it with a factory rebuilt to fully cure the problem. Of course have this preliminary diagnosis confirmed by a trusted shop you use. Shop around for the best price but make sure the engine is a quality rebuilt

Posted on Sep 12, 2012

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that gas down then refill your tank and take your Smog Test. It will pass. What state are you in??
What are your smog test numbers??
MikNas in California

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