Question about 2002 Ford Windstar

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I have 16 codes showing up for my 02 Windstar. Can you tell me what part I might actually have to change?

The codes are: C115 C1234 C1233 C1235 C1185 C1198 C1194 C1254 C1246 C1250 C1242 C1214 C1210 U1260 U1261 U1262 Thank you!

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May b engine computer to have that many codes or a grounding issue like a broken ground wire

Posted on Apr 27, 2015

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  • Ford Master
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A data stream run at private shops will pinpoint issue. It uses xpensive factory gear. But tech must hav xperienc in deducing readout. A cheap code scanner just gives a general direction

Posted on Apr 27, 2015

  • Arnie Burke
    Arnie Burke Apr 27, 2015

    A data stream run at private shops will pinpoint issue. It uses xpensive factory gear. But tech must hav xperienc in deducing readout. A cheap code scanner just gives a general direction

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1 Answer

Have a 01 bmw 325ci had code 0491 and 0492 secondary air insufficient i changed the check valve control switch vacum lines water pump 02 sensors up stream thermostat still get the codes can any one tell me...


Did you check the Vacuum lines to the Secondary air Valve Controls. They may be rotten. Can you do a Smoke test. Replace dry rotted lines with either 3/16 Fuel or Power Steering Hoses if you do not get ORM Vacuum lines/hoses. There are many Vedios on You Tube showing this specific problem solving on German cars. you can check out these,
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Code p0161 p0141 change the 02 sensor but still th light comes on.


Not likely both sensors fail same time look for a fuse or relay that has failed!

Reset codes and see if error returns if so and fuse is good check relay circuit.

Hope this helps?
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Apr 03, 2016 | 2003 Jeep Liberty

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Where is the secondary air injection system on my 02 ford windstar


Got me this one thats for sure as the fault code shows this and sometimes it seem to denote the recycle gas valve EGR and other times it seems to denote the idle valve solonoid thingy ?

Mar 09, 2013 | Cars & Trucks

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I have a 1998 ford windstar and i need upstream & downstream 02 sensor but i dont know if i need 1 or 2 upstream sensors.


assueming it has the v-6 in it look at the exhaust pipe comming off the side of the engine there will be two up stream 02 sensors which are heated and one downstream past catalitic conveter. If may have the second style with the Y cross over with 1 upstream before the cat and one after. The difference between the 0-2 sensors is the upstrean are heated so it goes into closed loop faster. I find that on most of these the up stream 02 sensor heaters have failed. You can go to a Autozone and they can pull the codes for you and tell you which side it is that needs to be replaced. However 02 sensors get old after time and they start shifting slowly, if it shifts slowly then it's called a lazy 02 sensor. And will send a code to the computer, if you get the trouble code of the 02 sensor heater is bad you will have to change it, I recommend Replacing both. The reason is if one is going bad the other will soon follow. You can buy a socket wrench For the 02 sensors for 12 dollars makes it real easy to replace the 02 sensors when they are COLD. Hope this helps and thanks for using fix-ya.

Sep 14, 2010 | 1998 Ford Windstar

1 Answer

2000 windstar service light on


Your van has four o2 sensor's, the code should tell you which one is bad for exsample code should be like,
o2 sensor bank 1 sensor 1 or 2
o2 sensor bank 2 sensor 1 or 2

Also make sure you don't have a vacum leak.

Jun 11, 2010 | 2000 Ford Windstar

1 Answer

I have a ford windstar 2001 lx there are four code's i need info


#1 is the egr position sensor #4 Is for single cylinder misfire so this could be the coil or a bad plug or wire ..but with fords should check for a vacume leak that can cause a misfire to .....#2#3 are 02 sensors before i would change them i would check the mass air flow sensor ..Hope this helps

Nov 10, 2009 | 2001 Ford Windstar

2 Answers

My 02 3.8 windstar starts chugging down at redlights. i have changed the idle air control, the plenum gasket, and the egr valve


Chugging down? Do you mean your engine is almost stalling? Sounds like your fuel filter is clogging up. Change it before your fuel pump dies. A Fuel Filter's like $10 - $15.

May 04, 2009 | 2000 Ford Windstar

1 Answer

Ford windstar OBD II code P1537/38, P0171 and P0420


It could all be related.P1537/38 are the intake manifold runner controls are stuck open.They are controlled by vacuum solenoids.The P0171 is bank one of the engine is running lean,usually caused by a vacuum leak, P0420 is catalytic converter efficiency code. The computer monitors the switch rate of the front 02 sensors and compares it to the switch rate of the rear 02 sensors to tell if catalytic converter is doing its job. Now if the front 02 is not switching properly then this will cause this test to fail and set this code.
Look on bottom section of the intake manifold at the back of engine(where tranny bolts up) you should see the vacuum motors there on the intake,these are the control motors for the intake manifold runners.Make sure the vacuum lines are hooked up and lines are not leaking. Also you will see a lever from it to intake make sure they move and are not binding.

Mar 11, 2009 | 1996 Ford Windstar

3 Answers

1995 Windstar OBD II showing codes PO340, PO171, and PO174.


Symptoms of a faulty Camshaft Position Sensor can include hard starting (or no starting), rough running/misfiring and/or loss of power.

Code 340 COULD be caused solely by a faulty Camshaft Position Sensor. However, this code refers to the entire circuit. So, replacing the sensor may not fix the issue. The problem could lie in any part of the circuit - the sensor itself, the wiring, or the PCM.

Codes 171 and 174 typically appear together. They are caused by the 02 sensors reading too much air (lean) in the exhaust. In most cases, simply cleaning the MAF sensor does the trick. I typically take it off and spray it with electronics or brake cleaner. Just make sure it dries before reinstalling. If this doesn't eliminate the codes, inspect all vacuum and PCV hoses, check for a dirty fuel filter and ensure the furl pressure is within limits.

For clarification, the first trip to the shop your car showed codes 402, 732, 733, 171 and 174. After changing the DPFE/EGR, did ALL those codes go away and now only codes 340, 171 and 174 exist? Or do you have the second set of codes in addition to the first codes?




Jan 15, 2009 | 2001 Ford Windstar

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