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My car is an escort 2002 my engine light is on i scan the car i get code PO171

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Code for lean fuel mix- try injector cleaner and a new fuel filter

Posted on May 28, 2011

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2002 bmw check engine light on, diagnostic trouble codes p0174 and p0171.


Google the Codes
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They are Oxygen Sensors-lean on both banks
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Need to reset check engine lite on 2002 ford escort zx2


have you scanned for codes?

Have you repaired whatever caused the light to come on?

If you have not than clearing the codes to turn the light of will only result in the light coming back on as soon as the fault is detected by the computer.

Feb 14, 2012 | Ford Escort Cars & Trucks

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Car is running fine. But, service engine soon light on. Car is a 2002 zx2 Ford


Need scanned the PCM to know wht FAULT CODE is stored there. With this code number we could den additional details.

Keep in touch.

Sep 14, 2010 | 2001 Ford Escort ZX2

1 Answer

PO171 code- 02 Escort zx2. What should i try first?


Try changing your PCV valve first then go to your Idle air control and air filter

Apr 26, 2009 | 2001 Ford Escort ZX2

1 Answer

SERVICE ENGINE SOON LIGHT ON


you need to change the oxygen sensor. it will soon cause you problems. after you need to take it in to  erase the code.

Apr 20, 2009 | 1997 Chrysler Town & Country

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Service engine light is on


this sort of thing could be caused by a multitude of problems and without car in front of me i can only suggest taking car to dealers.sorry but if you changed everything it could be its cheaper to stick car in dealers

Nov 01, 2008 | 2000 Ford Escort

2 Answers

What does engine fault code po171 system too lean bank 1 mean thanks


i think its the oxygen sensor (pre cat) in exhaust

Sep 23, 2008 | 2002 Nissan Altima

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