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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Need help



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      05-09-2013, 04:28 PM   #1
chris98m3
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Need help

What is p0420 n p0430
Car is hesitating
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      05-09-2013, 04:34 PM   #2
Mikey335
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Did you just change to catless downpipes?


p0420/430 are o2 sensor
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      05-09-2013, 04:38 PM   #3
chris98m3
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Yea I got Catless dp
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      05-09-2013, 04:39 PM   #4
marv85
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you probably switched the sensors
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      05-09-2013, 04:42 PM   #5
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Yeah either you put sensor in wrong pipe, or you broke them when installing pipes.
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      05-09-2013, 04:44 PM   #6
chris98m3
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My shop put the dp in. How can I find out if there in the wrong place?
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      05-09-2013, 05:49 PM   #7
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Do you have a tune? Those are codes related to emissions. Search for the codes here. Lots of threads about them...
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      05-09-2013, 08:51 PM   #8
chris98m3
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Quote:
Originally Posted by enrita
Do you have a tune? Those are codes related to emissions. Search for the codes here. Lots of threads about them...
Yea I have a jb4. Iam about to buy the front oxygen sensors. But I hope it helps.
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