2004 Verona error codes P0171 and P0174 twice - Suzuki Forums: Suzuki Forum Site
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Old 03-24-2014, 09:17 PM   #1 (permalink)
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Unhappy 2004 Verona error codes P0171 and P0174 twice

Howdy,
I have a 2004 Verona that throws P0171 and P0174 twice on the code reader.
This is weird.

I know this to be the System is too lean on both banks.
I have gone thru the tremendous pain of replacing the gaskets on the intake manifold. And replacing the spark plugs (and looking at the fuel injectors - which i thought were the spark plugs).

What could cause these codes to show up twice on the code reader?
P0171
P0174
P0171
P0174.

I am about to clean the Mass Intake sensor once i find it.

Any other ideas?
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Old 04-05-2014, 07:11 PM   #2 (permalink)
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I do believe that the culprit could be faulty O2 sensor(s). I think I have experienced that issue with other cars in the past.
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