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#4663520 - 02/12/18 06:29 AM Not Reporting Engine Codes
borgward Offline


Registered: 09/13/10
Posts: 128
Loc: Central Texas
2013 Fiesta SE 1.6

OBD AutoDoctor 3.4.8 software

OBDLink LX Bluetooth OBD II scan tool

Is the Fiesta supposed to report Diagnostic Engine Codes?

Soon as I started the engine this evening, the wrench light came on and the
screen displayed Engine Malfunction Service Soon. Indeed there was a
throttle malfunction. No response to throttle position in it's midrange.

I ran OBD Auto Doctor software, clicked on Trouble Codes but got message "Confirmed Diagnostic Trouble
Codes -none

I drove the car for 30 minutes and saved the Data Log which I sent to OBD AutoDoctor. I got the following response by email:

"Thanks for the log. According to the log, it's very clear that your
car doesn't report any Diagnostic Trouble Codes. Unfortunately I don't
know the reason for not reporting."

The throttle problem would either be the position sensor in the throttle body, or the throttle pedal assembly, or possibly a bad connection between the two. Should OBD II report throttle pedal problems, or only throttle body problems?

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#4663529 - 02/12/18 06:47 AM Re: Not Reporting Engine Codes [Re: borgward]
Trav Offline


Registered: 11/20/06
Posts: 18885
Loc: MA, Mittelfranken.de
Tool is probably not compatible with whatever protocol this car is using.
Does the Bluetooth adapter have a list of protocols? I am looking for this Fiesta protocol.

Edit: http://www.obdlink.com/lxbt/


Edited by Trav (02/12/18 06:51 AM)
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#4663533 - 02/12/18 07:01 AM Re: Not Reporting Engine Codes [Re: borgward]
Trav Offline


Registered: 11/20/06
Posts: 18885
Loc: MA, Mittelfranken.de
This is interesting but I have no idea if it is applicable to yours. If your car was built in Brazil there may be an issue with the tool. They list the 2013 Fiesta as being built in São Bernardo do Campo, Brazil (Ford Brazil) (2013–present)

http://www.obdlink.com/obdlink-vehicle-compatibility/
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#4663560 - 02/12/18 07:29 AM Re: Not Reporting Engine Codes [Re: Trav]
borgward Offline


Registered: 09/13/10
Posts: 128
Loc: Central Texas
https://www.amazon.com/ScanTool-427201-O...#productDetails

"Works on all 1996+ cars and light trucks sold in the USA (except hybrid or electric vehicles)"

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#4663594 - 02/12/18 08:14 AM Re: Not Reporting Engine Codes [Re: borgward]
tomcat27 Offline


Registered: 06/25/09
Posts: 3564
Loc: Chicago, IL
Originally Posted By: borgward
https://www.amazon.com/ScanTool-427201-O...#productDetails

"Works on all 1996+ cars and light trucks sold in the USA (except hybrid or electric vehicles)"


clearly not. for your immediate problem, most chain auto stores will read your codes for free; then you can work towards getting your scan tool to function properly with your car.
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#4663604 - 02/12/18 08:28 AM Re: Not Reporting Engine Codes [Re: tomcat27]
borgward Offline


Registered: 09/13/10
Posts: 128
Loc: Central Texas
I have had those places scan for that problem, but they could never get a read on it. They have been able to read other codes, just not throttle position codes. Thats why I bought my own device. I am thinking that there is code for the throttle position sensor, but not for the throttle pedal assy and/or connections between the two.

I am thinking maybe a wiring harness connector problem. Like maybe a loose fit inside the connector. This issue usually happens when there is an abrupt change in weather. A lot of times I can turn the engine off and then on. The wrench icon disappears, there is no longer malfunction notice in the display and the symptom does not occur. If the Wrench icon and the notice still display after I restart, I can do the proceedure to turn them off and again the symptom goes away.

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#4663913 - 02/12/18 01:05 PM Re: Not Reporting Engine Codes [Re: borgward]
14Accent Offline


Registered: 08/03/17
Posts: 391
Loc: MN
The wrench light codes won't be picked up by a lot of cheap and aftermarket scanners. It's going to need a full featured scanner.

Most likely a failed throttle motor.
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#4663948 - 02/12/18 01:46 PM Re: Not Reporting Engine Codes [Re: borgward]
borgward Offline


Registered: 09/13/10
Posts: 128
Loc: Central Texas
Whats cheap? I bought ScanTool 427201 OBDLink LX Bluetooth: Professional OBD-II Scan Tool for Android & Windows from Amazon. $62.99. It's not one of the $10 or $12 ones. Any suggestions. The usual culprit is the throttle position sensor in the throttle body. Usually it is a matter of moisture getting in and corroding the contacts.The Fiesta is the only ford that the sensor is not replaceable. You have to buy a new throttle body for $600.

The funny thing is that I can turn the ignition off and then restart and the wrench icon, "Engine Malfunction Service Now" message, and the symptom all disappear. That's like if you had a fever, took you temperature, removed the thermometer and all of a sudden you have no fever.

I have read that there are Ford proprietary codes. What are proprietary codes? are they the OBDII engine malfunction codes? What do you need to read them?

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#4663961 - 02/12/18 02:02 PM Re: Not Reporting Engine Codes [Re: borgward]
ford46guy Offline


Registered: 06/01/13
Posts: 525
Loc: Albany, NY
Try forscan software.

http://forscan.org/download.html

Runs on your laptop. There is phone version too for a few bucks.
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#4664022 - 02/12/18 03:13 PM Re: Not Reporting Engine Codes [Re: borgward]
bdcardinal Offline


Registered: 06/03/05
Posts: 10992
Loc: Santa Barbara, CA
Originally Posted By: borgward
Whats cheap? I bought ScanTool 427201 OBDLink LX Bluetooth: Professional OBD-II Scan Tool for Android & Windows from Amazon. $62.99. It's not one of the $10 or $12 ones. Any suggestions. The usual culprit is the throttle position sensor in the throttle body. Usually it is a matter of moisture getting in and corroding the contacts.The Fiesta is the only ford that the sensor is not replaceable. You have to buy a new throttle body for $600.

The funny thing is that I can turn the ignition off and then restart and the wrench icon, "Engine Malfunction Service Now" message, and the symptom all disappear. That's like if you had a fever, took you temperature, removed the thermometer and all of a sudden you have no fever.

I have read that there are Ford proprietary codes. What are proprietary codes? are they the OBDII engine malfunction codes? What do you need to read them?


That would be a cheap scanner even at $62.99.

The throttle body should be a lot cheaper since almost all new Fords do not have replaceable sensors, plus there is an extended warranty on a lot of models.
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#4664031 - 02/12/18 03:23 PM Re: Not Reporting Engine Codes [Re: bdcardinal]
borgward Offline


Registered: 09/13/10
Posts: 128
Loc: Central Texas
Extended warranty would have cost me $3900 over the time elapsed from the time the factory warranty expired. That's at $100 a month. I think it was a lot more per month last time I checked. Also I would have to have considered all that the fine print would not pay for. Would the extended warranty pay for the part so I can DIY?

I agree the throttle body should be cheaper, but the price is about $600. Please let me know if there is anywhere I can get a new one for hundreds of $ less. I have not found any anywhere.

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#4664039 - 02/12/18 03:29 PM Re: Not Reporting Engine Codes [Re: borgward]
bdcardinal Offline


Registered: 06/03/05
Posts: 10992
Loc: Santa Barbara, CA
Nevermind, that one is expensive. There are a lot of Ford models that have an extended warranty on the throttle body, but yours must not be. The ones that are part of the extended warranty dropped in price dramatically, like under $100. I am on vacation now but I don't think I have ever sold one for a Fiesta so failures are pretty rare.
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1995 Ford Mustang GT

Ford/Mazda Parts Counter
NRA Benefactor Member
Opinions expressed are my own.

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#4664142 - 02/12/18 05:15 PM Re: Not Reporting Engine Codes [Re: borgward]
Silverado12 Offline


Registered: 02/26/13
Posts: 3114
Loc: Central Virginia
FWIW I had the problem in my wife's 2010 Mustang and it was the throttle body motor. Ford makes a rebuild kit for it so you don't have to replace the entire unit. Junkyard link The junkyard is definitely a consideration.
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#4664143 - 02/12/18 05:17 PM Re: Not Reporting Engine Codes [Re: borgward]
Silverado12 Offline


Registered: 02/26/13
Posts: 3114
Loc: Central Virginia
I just looked up your car and throttle bodies are averaging $100 or less in my area.


Edited by Silverado12 (02/12/18 05:17 PM)
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#4664148 - 02/12/18 05:25 PM Re: Not Reporting Engine Codes [Re: borgward]
14Accent Offline


Registered: 08/03/17
Posts: 391
Loc: MN
Rockauto sells a reman TB from Cardone for $100.
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