P0171 2011 FORD FOCUS Code - System Too Lean Bank 1
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P0171 2011 FORD FOCUS code possible causes
- Intake air leaks
- Faulty front heated oxygen sensor
- Ignition misfiring
- Faulty fuel injectors
- Exhaust gas leaks
- Incorrect fuel pressure
- Lack of fuel
- Faulty Mass Air Flow (MAF) sensor
- Incorrect Positive Crankcase Ventilation (PCV) hose connection
How do I fix the P0171 2011 FORD FOCUS code?
Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.P0171 2011 FORD FOCUS code tech notes
If the P0171 is combined with the P0174 code, it's very likely that the problem is caused by an intake leak. If there are no intake leaks, the next step is to replace the air filter and clean the air flow meter. If the problem persists the front oxygen (O2) sensor may need to be replaced.Cost of diagnosing the P0171 2011 FORD FOCUS code
Labor: 1.0
The cost of diagnosing the P0171 2011 FORD FOCUS code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.When is the P0171 2011 FORD FOCUS code detected?
- Fuel injection system does not operate properly.- The amount of mixture ratio compensation is too small. (The mixture ratio is too lean.)
What are P0171 2011 FORD FOCUS code possible symptoms?
- Engine Light ON (or Service Engine Soon Warning Light)
- Excessive Fuel Consumption
P0171 2011 FORD FOCUS code description
The adaptive fuel strategy continuously monitors the fuel delivery hardware. The test fails when the adaptive fuel tables reach a rich calibrated limit.
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