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Quick question about Emissions Code P0171

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Old 02-17-2012, 04:27 PM
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Exclamation Quick question about Emissions Code P0171

I have a 1998 Jeep Cherokee! It reads a code P0171 which it means its running lean? Any ideas what it could be? O2 sensor? or MAF sensor? PLEASE help! Thanks
Old 02-17-2012, 04:51 PM
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Is it a 4 or 6 cyl?
Old 02-17-2012, 04:57 PM
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You do not have a MAF sensor. I would check your pre-cat oxygen sensor.
Old 02-17-2012, 05:10 PM
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its a inline six! i actually just found the CTS sensor was broke and im still gonna replace the O2 sensor
Old 03-03-2012, 09:46 AM
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Crack exhaust header was actually the problem! Thanks tho
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