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Thread: P0172 System Too Rich (Bank 1)

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    P0172 System Too Rich (Bank 1)

    Car threw an CEL yesterday morning after driving to work. Torque reads it as P0172, but I can't find much information about what this might be in relation to an Abarth. There is no MAF, right? Engine is stock, nothing changed, no fiddling around in the engine bay any time recently. Anyone have some suggestion on where to look?

    Thanks!

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    Senior Member MarcusDubya77's Avatar
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    Possibly failing O2 sensor. That would be my first stop. Spark plugs, coils, or wires...Compression test? How many miles? I only know this because I am chasing down a similar issue with my S2000.
    2012 Grigio Abarth w/ Red Interior Madness ECM, Madness Go Pedal, TWM Short Shifter, Max Flow Intake, SILA Intercooler, SILA Turbo Blanket, Forge BOV, Forge Waste Gate Actuator, Madness Axle Back Exhaust, H& R Springs, Road Race "Big Red" Anti Sway Bar, Road Race Corsa Chassis Bracing, Stoptech Front and EBC rear Brake Rotors, 16mm Athena Spacers, Madness Mudflaps, "Mad Mouse" Euro Plate

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    Quote Originally Posted by MarcusDubya77 View Post
    Possibly failing O2 sensor. That would be my first stop. Spark plugs, coils, or wires...Compression test? How many miles? I only know this because I am chasing down a similar issue with my S2000.

    Sorry, should have provided that info up front:
    2015, 45k miles. Haven't done any compression testing, I'd hope that's not even on the list this early. O2 sensor sounds like the likely culprit. I cleared the errors and they haven't come back, but I expect it will, eventually.

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    Senior Member MarcusDubya77's Avatar
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    Usually, most cars take 3 warm cold/ warm cycles to have a CEL return. First time it recognizes the fault it puts it into a "pending" state. The second time it sees the fault it puts it into a "current" state. Then the magic happens!!!
    2012 Grigio Abarth w/ Red Interior Madness ECM, Madness Go Pedal, TWM Short Shifter, Max Flow Intake, SILA Intercooler, SILA Turbo Blanket, Forge BOV, Forge Waste Gate Actuator, Madness Axle Back Exhaust, H& R Springs, Road Race "Big Red" Anti Sway Bar, Road Race Corsa Chassis Bracing, Stoptech Front and EBC rear Brake Rotors, 16mm Athena Spacers, Madness Mudflaps, "Mad Mouse" Euro Plate

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