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2010 chevy equniox engine code p0171 - Equinox Chevrolet Cars & Trucks

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Posted on Jan 02, 2017

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SOURCE: 99 CHEVY trouble shoot code P0171

LEAN TROUBLE CODES (P0171 or P0174) A code P0171 or P0174 indicate the engine is running lean. This means there is too much air and/or not enough fuel. You can confirm the engine is running lean by looking at Short Term Fuel Trim (STFT) and Long Term Fuel Trim (LTFT). Normally, STFT and LTFT should be plus or minus 8 from zero. If STFT and/or LTFT are more than about +10 or higher, it indicates the engine is running LEAN. Negative numbers (-10 or more) indicates the engine is running RICH. 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)

______________________________-- Causes A code P0171 may mean that one or more of the following has happened:

  • The MAF (Mass Air Flow) Sensor is dirty or faulty. Note: The use of "oiled" air filters may cause the MAF to become dirty if the filter is over-oiled. There is also an issue with some vehicles where the MAF sensors leak the silicone potting material used to protect the circuitry.
  • There could be a vacuum leak downstream of the MAF sensor.
Possible Solutions Possible solutions include:
  • In the vast majority of cases, simply cleaning the MAF sensor does the trick. Consult your service manual for it's location if you need help. I find it's best to take it off and spray it with electronics cleaner or brake cleaner. Make sure you are careful not to damage the MAF sensor, and make sure it's dry before reinstalling
  • Inspect all vacuum and PCV hoses, replace if necessary
  • Check for a dirty fuel filter and proper fuel pressure

Posted on Jan 02, 2010

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2010 Citroen C3 1.6 VTI codes P11AA,P2134,P0171,P1336,P1338,P0313,P1337,P13340,p1339 What can the causes be. Thanks


P11AA: ??

P2134: Throttle/Pedal Position Sensor/Switch 'F' Circuit Intermittent
http://www.autocodes.com/p2134.html

P0171: System Too Lean Bank 1 http://www.autocodes.com/p0171.html

P1336: Intake Valve Timing Control Solenoid Valve Circuit Bank 2
http://www.autocodes.com/p1136.html

P1338: Camshaft Position Sensor Bank 1 Open Circuit Or Short To Positive
http://www.autocodes.com/p1338.html

P0313: Misfire Detected With Low Fuel http://www.autocodes.com/p0313.html

P1337: Crankshaft Position Sensor 2 No Signal
http://www.autocodes.com/p1337.html

P1339: Crankshaft Position/Engine Speed Sensor Cross Connected
http://www.autocodes.com/p1339.html

Nov 17, 2016 | 2010 Citroen C3 1.6

1 Answer

Im getting P0171 code- lean .


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Jan 27, 2016 | Cars & Trucks

2 Answers

Diagnostic codes p0171


P C M detects an excessively lean condition. (just a suggestion, Have MASS AIR FLOW SENSOR CHECKED AND CLEANED. This may solve the problem. Good luck.

Nov 13, 2013 | 2010 Chevrolet Aveo

1 Answer

2009 Chevy aveo code P0171


code po171 in chevrolate aveo 2010

Dec 12, 2012 | 2009 Chevrolet Aveo

1 Answer

2010 gmc 2500 hd, trouble code, P036 P0171 P219A What are these codes


the p036 i believe you forgot a zero but that would be a misfire in cylinder 6 2nd from the back on the passenger side.p0171 is system is too lean on passenger side p219a fuel trim balance bank one which is passenger side . Take it to gm hopefully it is still under warranty

Mar 26, 2012 | 2010 GMC Sierra 2500HD

1 Answer

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?

Jan 08, 2012 | Chevrolet Cars & Trucks

1 Answer

Have trouble code po171 on my 2000 chevy venture, looking for possible solutions


gtford64,

P0171 indicates the computer has detected a "lean engine condition". Sorry to say you couldn't have gotten a worse code. By that I mean there are sooo many things that can cause a P0171
However I'll just run down a few of the more common causes:

1 - Look for any obvious vacuum leaks around the engine area. Vacuum leaks will definetley
cause a lean condition which will trigger a check engine light and code P0171
Especially check around the PCV system and where the EGR valve mounts to the intake.


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2 - Check your oxygen sensor wiring to make sure it is not chaffed and shorted. This will force a
lean condition and set P0171. O2 sensors are located on your exhaust system pipes and
manifold.

pawdaddy_30.jpg

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3 - A constant or intermittent engine miss will trigger this code. Check for fouled or shorted
spark plugs or weak spark plug wires.

4 - Low fuel pressure will also trigger P0171. Check your fuel pressure if thats possibe. If it's low,
check to make sure your fuel filter is not restricted. Otherwise, you may have a weak fuel
pump!


pawdaddy_32.jpg
Try these tips first.If not successful, we'll take it 1 step further. Good luck!


.

Oct 05, 2011 | 2000 Chevrolet Venture

2 Answers

Have code P0001, P0171, & P0300. Need to know


P0300 Random/Multiple Cylinder Misfire Detected
P0171 System too Lean (Bank 1) - Read Our Article On Oxygen Sensor Codes For Help With This Generic Check Engine Light Code
i could only find the 2 codes for you
try here
www.engine-light-help.com
what kind of shape are your plug wires in ?

Jan 14, 2010 | 2005 Chevrolet Suburban

2 Answers

98 chevy s-10 codes p0131, p0171, and p1133


Your O2 sensor is starting to go bad .recomend replacement before it gets worse

Sep 24, 2009 | 2004 Chevrolet Silverado 1500 Crew Cab

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