2002 Chevy Tahoe diagnostic code p01701

2002 CHEVROLET TAHOE
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TIFFANY RUSSO
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  • 1 POST
Engine Performance problem
2002 Chevy Tahoe V8 Two Wheel Drive Automatic
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my check engine light is on and the diagnostic reader says running lean bank one what is the problem ?
Apr 18, 2008 at 11:52 AM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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RASMATAZ
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You probably meant P0171 see below

A lean fuel condition can be caused by:

* Low fuel pressure due to a weak pump or leaky fuel pressure regulator. (use a fuel pressure gauge to check fuel pressure at idle)

* Dirty fuel injectors. (try cleaning the injectors)

* Vacuum leaks at the intake manifold, vacuum hose connections or throttle body. (Use a vacuum gauge to check for low intake vacuum)

* Leaky EGR valve. (Check operation of EGR valve)

* Leaky PCV Valve or hose. (Check valve and hose connections)

* Dirty or defective Mass Airflow Sensor (MAF). (Try cleaning the MAF sensor wires or filament with aerosol electronics cleaner. Do NOT use anything else to clean the sensor, and do not touch the sensor wires)
Apr 18, 2008 at 12:07 PM
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