SOURCE: 98 chevy s-10 codes p0131, p0171, and p1133
http://www.obd-codes.com/
go there look up the codes there all there
SOURCE: 2003 Tahoe Running rough, Idle irratic, Ck engine
Yes, replace the MAF, then check if the lean condition goes away. It should.
MAF's are sensitive to cleaning. Sometimes it works, other times it doesn't.
SOURCE: codes P0171, P0174, P0440
This is usually an oxygen sensor, replace the O2 sensor located above the catalytic converter before replacing the evaporator purge canister.
SOURCE: 08 chevy trailblazer
P0171 is a lean bank one code. It is usually always a vacuum leak and is usually not an O2 sensor or a MAF sensor. The first step shoul have been to check for vacuum leaks.
What engine do you have?
I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa
P0171....System too Lean (Bank 1)
P0116....Engine Coolant Temperature Circuit Range/Performance Problem
right it means you have a faulty O2 sensor and i would imagine the one after the cat ,and the engine is running cold so its either a problem with no thermostat fitted or outside ambient temperature too cold and you will need to put a piece of cardboard in front of radiator to stop the air flow and the wind chill factor
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