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G35 Coupe V35 2003 - 07
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Need help. Diagnostic code P0175 and P0172?

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Old 08-01-2016, 10:41 AM
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Need help. Diagnostic code P0175 and P0172?

My G recently through codes
P0175 fuel system too rich (cylinder bank 2)
P0172 fuel injection system too rich

Would anyone know why these codes are happening or where exactly the problem is?
MAF, Cats, fuel injectors, O2 sensors, spark plugs ???
Old 08-02-2016, 04:49 AM
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Hmmmmm

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Old 08-02-2016, 02:18 PM
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That shows both banks, so I'd start with the basics and look for things that affect the engine as a whole.

Air restrictions
Spark plugs
MAF sensor
Fuel pressure

I highly doubt it's the CATS or both A/F sensors at once.
Old 08-03-2016, 04:06 PM
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Quote:
Originally Posted by coffeysm View Post
That shows both banks, so I'd start with the basics and look for things that affect the engine as a whole.

Air restrictions
Spark plugs
MAF sensor
Fuel pressure

I highly doubt it's the CATS or both A/F sensors at once.
Alright thanks.

Do you know how to test fuel pressure

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