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05-14-2009, 11:06 AM | #1 |
Drives: Corsa 1.2 8v Join Date: Jan 2009
Location: Leicester
Posts: 5
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Help - OBDII error code "system running lean"
Hi,
my girlfriend's had a 99 Yaris for a few years now. The engine light's been on for a while, and it's been a pain picking up off idle, worse when cold. It runs fine, other than this flat spot very low in the rev range. And returns good mpg. Anyway, I bought an OBDII error reader which read code p0171 which is "system running lean". So I'm guessing it's a sensor, but I don't know where. I replaced the spark plugs recently which didn't help. A clogged air filter would make it run rich. So I'm thinking dirty injectors? Dodgy fuel management? Lambda sensor? Anyone got any input? Ga |
05-14-2009, 11:09 AM | #2 | |
Start another Oil Thread!
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could be a bad oxygen sensor
could be clogged injectors. i'd start with the o2 sensor first.
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05-14-2009, 11:10 AM | #3 |
Drives: Corsa 1.2 8v Join Date: Jan 2009
Location: Leicester
Posts: 5
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Just checked eBay WOW they're expensive! Might try a breakers.
Gaz |
05-14-2009, 11:30 AM | #4 | ||
Start another Oil Thread!
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Quote:
http://www.google.co.uk/products?q=o...sor+1999+yaris
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05-14-2009, 11:34 AM | #5 |
Learn to Relax
Drives: 2007, Meteorite, LB Join Date: Dec 2008
Location: Anaheim, CA
Posts: 2,070
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Try using a good fuel injector cleaner in your gas. If it shows improvement, run it again.
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Tags |
lean, odbii, yaris |
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