CEL P0171 - System Too Lean (Bank 1)
Posted 15 May 2012 - 07:00 AM
A single CEL code: P0171
Car still runs fine & has lots of power.
So here is my plan of action:
- change the air filter (way overdue)
- clean the MAF (using non-chlorinated electronics cleaner)
- likely be no change – so next replace the leaking exhaust donut.
- if still no change - replace the O2 sensor?
- any other ideas?
I’m taking the car to the west coast again in a month or two & I want to be sure I makes it back. lol
Posted 15 May 2012 - 01:40 PM
Posted 16 May 2012 - 10:32 AM
when was the last time you changed your air filter
I changed it yesterday, but yah it had been nearly 90, 000KM. lol
I have put about 140KM on it since reset & the CEL has not returned.
it could be an exhaust leak..... with that many miles chances are it's time to change the o2 sensor.
I replaced the exhaust donut on borth of the 1ZZ's I owned previously. Hard shifts, clutch drops & engine braking causes the engine to move quite a bit; this flattens out the donut between the exhaust manifold and the exhaust pipe. Then they leak. After I clean the MAF, it will be the next thing I do.
Posted 18 May 2012 - 12:57 AM
X2 This! Don't waste money or time on the MAF or O2.
Manifold gasket. Or vaccum lines could be dissconnected or punctured..
"If you want Government to solve your problems, then you are the problem!" BMSR
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Posted 18 May 2012 - 01:18 AM
Posted 30 May 2012 - 06:35 AM
Posted 14 June 2012 - 03:00 PM
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