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anyone know this code?

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Old 02-17-2005, 02:28 PM
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Default anyone know this code?

my ses light poped today, after checking it with my predator it says P0171 Fuel Trim Bank1, System too lean. Anyone know what might cause this?
Old 02-17-2005, 02:33 PM
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Exhaust leak near collector or at heads, clogged injector, lazy O2 sensor

Did this just start or have you done any mods lately?

Bank 1 is Driver side, so it's gotta be something that the two sides don't have in common

I would check for an exhaust leak, you can swap O2 sensors to see if the problem follows the sensor... if it stays on that side then either extra unmetered air is only entering that side or an injector isn't providing enough fuel
Old 02-17-2005, 02:43 PM
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Originally Posted by horist
Exhaust leak near collector or at heads, clogged injector, lazy O2 sensor

Did this just start or have you done any mods lately?

Bank 1 is Driver side, so it's gotta be something that the two sides don't have in common

I would check for an exhaust leak, you can swap O2 sensors to see if the problem follows the sensor... if it stays on that side then either extra unmetered air is only entering that side or an injector isn't providing enough fuel
this just happened today. might be a leak, just did my exhaust couple days ago, and i can hear that i have leak somewhere. Thx for the info.




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