Bryce H20SN8 Posted March 18, 2014 Report Share Posted March 18, 2014 My 2013 Shelby check engine light has come on 7 times in 14 months 6,000 miles. Code P050B. Grapevine Ford in Texas says poor fuel quality buy fuel without ethanol . That is impossible. Second time they say add fuel additive. I did that for 6 tanks and light came on again. This time they say don't add fuel additive and I should contact Ford engineering. they say to drain my fuel tank , which is full and and they send me home with 1/2 and tank and light comes on again. I contact Ford and they tell me to get a second opinion. Never take your Shelby to Grapevine Ford! ! I take it to Five Star Ford in North Richland Hills Texas and same code as usual, they keep it 9 days and replace MAF and reset KAM, replace PCM and do a exhaust leak test. I drive about 600 miles and check engine light comes on again, same code P050B. They say they have never had this problem before. They are the best dealer I have ever dealt with, but they don't know what the problem is. I have had in the shop 5 times for over 25 days, I think the Lemon Law is in effect. Can anyone Help !! I am out of patience by now. Link to comment Share on other sites More sharing options...
RedruM Posted March 18, 2014 Report Share Posted March 18, 2014 Never heard of this. Bad sensor of some types only guess. Call ford best bet Link to comment Share on other sites More sharing options...
svtmattUT Posted March 18, 2014 Report Share Posted March 18, 2014 Never heard of this either. While the task of troubleshooting will be deferred to a local dealer you could try calling SVT directly, I've called them about an issue once and they could at least tell me if it was common. 1-800-FORD-SVT Link to comment Share on other sites More sharing options...
Bryce H20SN8 Posted March 19, 2014 Author Report Share Posted March 19, 2014 thanks for your response, ford SVT has never heard of this problem before. Now ford customer customer care will not return my call. Looks like I should have bought a Corvette!! Unbelievable that Ford can not fix the problem. Link to comment Share on other sites More sharing options...
svtmattUT Posted March 19, 2014 Report Share Posted March 19, 2014 http://www.svtperformance.com/forums/2013-14-shelby-gt500-413/959138-p050b-dtc-jlt-intake.html Link to comment Share on other sites More sharing options...
Don Johnston Posted March 19, 2014 Report Share Posted March 19, 2014 I have heard of the fuel filler hose or return (the small hose) being crimped just below the tank and causing problems. I am not sure if there was a TSB put out on this. Link to comment Share on other sites More sharing options...
Speedy1 Posted March 21, 2014 Report Share Posted March 21, 2014 I had the same issue shortly after 7500mi checkup. Took my 2014 into my dealer, Galpin Ford in North Hills, CA and the SVT Advisor immediately recognized the problem and told me they and seen it on a few models over the past year. They were not surprised by it. There is an internal engineering bulletin out on it, and there is a "kitted" fix for it that entails replacing the fuel filler assembly all the way to the tank. They will dump about 1/4 to 1/2 a tank of fuel when they do the installation. Took a day to do it, so I got a rental and came back the next day to get it. You may have to wait until the kit arrives depending on the Shelby sales volume at the dealer. I have had no problems since they installed the new assembly. Galpin is the biggest Ford Dealer in the US, and is a Shelby American officially authorized Shelby Modification Center, so you might call them and discuss your situation and get them to recommend a dealer to take it to in Texas. These guys also own Galpin Auto Sports which is home to the Pimp My Ride TV show. Link to comment Share on other sites More sharing options...
Bryce H20SN8 Posted March 22, 2014 Author Report Share Posted March 22, 2014 Thanks for the information . I will send this to Five Star Ford Monday morning. This might be the answer to my problems. I will let you know. Link to comment Share on other sites More sharing options...
Bookwyrm Posted May 22, 2014 Report Share Posted May 22, 2014 I had the same issue shortly after 7500mi checkup. Took my 2014 into my dealer, Galpin Ford in North Hills, CA and the SVT Advisor immediately recognized the problem and told me they and seen it on a few models over the past year. They were not surprised by it. There is an internal engineering bulletin out on it, and there is a "kitted" fix for it that entails replacing the fuel filler assembly all the way to the tank. They will dump about 1/4 to 1/2 a tank of fuel when they do the installation. Took a day to do it, so I got a rental and came back the next day to get it. You may have to wait until the kit arrives depending on the Shelby sales volume at the dealer. I have had no problems since they installed the new assembly. Galpin is the biggest Ford Dealer in the US, and is a Shelby American officially authorized Shelby Modification Center, so you might call them and discuss your situation and get them to recommend a dealer to take it to in Texas. These guys also own Galpin Auto Sports which is home to the Pimp My Ride TV show. Just had this issue start happening (the check engine light came on with the same code for the second time yesterday) on our 2014... Thanks for posting this! Do you happen to know what the bulletin number for it is? I've passed this info along to my dealer but just in case they can't find it any additional info may help! Link to comment Share on other sites More sharing options...
Bryce H20SN8 Posted May 23, 2014 Author Report Share Posted May 23, 2014 Mine has come on 7 times in 7,000 miles .They have a computer installed and I need to push the button when the check engine light comes on a again, so they can hopefully determine what is causing the problem. It has been 700 miles and not came on again . I will post as soon as it does. Link to comment Share on other sites More sharing options...
Snoopy49 Posted May 23, 2014 Report Share Posted May 23, 2014 From the 2014 Factory Service Manual Link to comment Share on other sites More sharing options...
Bookwyrm Posted August 19, 2014 Report Share Posted August 19, 2014 update on this -- after the 4th time my GT500 went in for this error code the dealer finally got in touch with SVT and an engineer in Detroit ran them through diagnostics on the car to test everything that could possibly generate the error till they found something broken (and he was prepared to fly out for a closer look if that didn't find anything).. Turns out they've had about 8 different cars that had this error pop up repeatedly (that have been reported to SVT) and every time it's been something different that caused it. In my case it was a dead crank sensor (assuming the error doesn't come back again, but it's now been 3 weeks without it). So if anyone else gets this error more than once with no obvious fix, make sure the dealer gets on the horn to Detroit -- there are folks at Ford who know what's up with it. Link to comment Share on other sites More sharing options...
Bryce H20SN8 Posted August 20, 2014 Author Report Share Posted August 20, 2014 MIne came on again for the 8th time. I filled up with gas and the light went off. The dealer changed the fuel filler line and it has been 600 miles with no problem.I will keep you posted, very frustrating . Link to comment Share on other sites More sharing options...
scottGT500 Posted September 10, 2014 Report Share Posted September 10, 2014 Sub'n Link to comment Share on other sites More sharing options...
Bill Hamilton Posted September 26, 2014 Report Share Posted September 26, 2014 Had it come up at 9100 miles. Reset it but will keep checking. Link to comment Share on other sites More sharing options...
Bryce H20SN8 Posted September 28, 2014 Author Report Share Posted September 28, 2014 Mine came on today for the 9th time ! Don't know if they will ever figure it out. Calling Ford Monday. Link to comment Share on other sites More sharing options...
Bill Hamilton Posted September 28, 2014 Report Share Posted September 28, 2014 Mine came on today for the 9th time ! Don't know if they will ever figure it out. Calling Ford Monday. Have you changed the air intake or added a tune? I have the Ford resonator delete and added a VMP Tune only about 5,000 miles ago. Had a 65 degree day the other morning when the code popped up. Looked up the code and read everything I could on it. Car was running fine except for the check engine light and when I checked it, it was the P050B code. Deleted the code and nothing for past several days now. One thing that struck me as funny in your original post was about the fuel. I usually run 93 octane with 0% ethanol. Not always but most of the time when I can. There are several stations near me that have it. I notice I get slightly better gas mileage with it also. I took a 200-mile trip last weekend and had to put some 93 octane with 10% ethanol in it on the road. First ethanol added gas I've put in it in several months. The next morning was when the P050B code popped up. Can't imagine that being a problem nowadays with the very limited availability of zero ethanol fuel in most states but thought it was unusual based on what one of the dealerships told you. Link to comment Share on other sites More sharing options...
Bryce H20SN8 Posted October 7, 2014 Author Report Share Posted October 7, 2014 No,car is still stock except for suspension upgrades. No tunes or air intake. Link to comment Share on other sites More sharing options...
RubyRedShelby14 Posted June 25, 2015 Report Share Posted June 25, 2015 2014 GT500 Flow Master cat back street exhaust. I had no issues for one year and 12K miles. Last month I added a JLT big air intake, custom tune, supercharger pulley upgrade, 1 step cooler spark plugs and new "oval" Ford Racing throttle body. Everything except the throttle body was a kit from JLT. Last week I was driving with no issues and the CEL came on. I checked the code and it is P050B (Tuner says Cold Start Ignition Timing Performance). Just after the CEL came on my low fuel light came on. I called SVT today (Ford Racing Division 1-800-367-3788) and they have never heard of this??? I called JLT and they said they would check with the people who created the tune. I filled up the tank today and cleared the error code. I will let you know what happens. Please post an answer if anyone has had and solved this issue. Link to comment Share on other sites More sharing options...
Bookwyrm Posted June 25, 2015 Report Share Posted June 25, 2015 You can't call SVT directly, it has to go through a Ford service department otherwise you'll never get near the right engineers. It sounds like in your case it's very likely your tune causing the problem as this engine code can be a number of different things and you've got a setup with a lot of changed parameters -- when you call JLT make sure they know ALL of the exact mods you've done as any of them can affect the tune. If it's not the tune, it could be the most common problem that stock cars (unmodified) have which is a faulty fuel or crank sensor. You may have trouble getting warranty service on that though with the mods you've done, since they haven't issued any TSB's on the sensors. Depending on where you are there's some good shops that can handle it though. Link to comment Share on other sites More sharing options...
RubyRedShelby14 Posted August 8, 2015 Report Share Posted August 8, 2015 I cleared the code but it came back about one or two months later. Link to comment Share on other sites More sharing options...
RubyRedShelby14 Posted September 13, 2015 Report Share Posted September 13, 2015 I think I found the problem. I installed the JLT cold air intake and on the instructions (2014 GT500) the picture for the orientation of the air flow sensor is backwards. On the 2014 there is no arrow pointing to the flow direction and no key so it fits into the tube either way. I pulled it out and reinstalled with the open end of the sensor facing the air cleaner. Idle improved and so far no P050B Cold Start Ignition Timing Performance error code. Link to comment Share on other sites More sharing options...
RubyRedShelby14 Posted February 2, 2016 Report Share Posted February 2, 2016 My code (P050B) came back again. Going to Kurgan Motorsports today to dyno and tune. I will ask them about the code. Link to comment Share on other sites More sharing options...
Snoopy49 Posted February 2, 2016 Report Share Posted February 2, 2016 Just to make sure the MAF is installed correctly, compare your installation to the MAF in my 2013. The MAF is mounted on the fender side of the air tube. Link to comment Share on other sites More sharing options...
AZ08GT500 Posted February 5, 2016 Report Share Posted February 5, 2016 Ever since I adjusted my TPS voltage on my KB 168mm mono blade throttle body I have been getting a P050B, I spoke with Lund about it and he said he sees it happen sometimes with after market T/Bs. I'm just just going to have him turn that code off. Link to comment Share on other sites More sharing options...
brownbear Posted September 14, 2016 Report Share Posted September 14, 2016 Hello guys, the Problem seems to be quite easy. i got shelby gt500 MY 2014. It came with american tune and JLT INTAKE 5 x 9 (127mm Filter size). FIRST Thing was : got a new tune and instead of 750 rwhp now it has 807 rwhp. So i used to fill in 98 roz/octane fuel. P0300 and P050B popped up every day. taking off the JLT twice and cleaning filter once a week and changed to fuel 102 roz/octane, issue codes popping up once a week. as in discription of JLT intake 5 x 9 is writtten : up to 750 rwhp so ordered instead of the built in 5x9 BIG AIR intake the SUPER BIG AIR intake !! 6 x 9 with 148 mm Connection size at Filter.(haven´t got it by now. it´s ordered) I gues, with the super BIG intake the Problem should be solved but needs to retune the car. next Thing is, OILED FILTER !! brings issues. ! In Mustang Discription is written : NO USE OF OILED FILTER: ! Brings causes. So better to use DRY Filter System. If use OILED Filter the MAF gets oiled and it will not function as it should. So 2 things : best of using DRY Filter fuel roz should be 102 and maybe the best Thing to use is the SUPER BIG air intake. / this is what i found out, but can´t say a 100% if the super big ait intake is the solution. the other 2 Points is for sure. greetings from germany Link to comment Share on other sites More sharing options...
brownbear Posted September 14, 2016 Report Share Posted September 14, 2016 my filter is done, - found the 6 x 9 while searching for replacement filter. if filter is not working anymore, so when ist done, the same codes will appear. Link to comment Share on other sites More sharing options...
Bookwyrm Posted September 14, 2016 Report Share Posted September 14, 2016 Brownbear -- that is true for cars that have been modified. The issues that were being reported in this thread were on cars that were still stock new from the dealership with all OEM parts. Link to comment Share on other sites More sharing options...
brownbear Posted September 14, 2016 Report Share Posted September 14, 2016 bill hamilton has a tune and shut off something.there is an issue on the fuel line like speedy said above. Link to comment Share on other sites More sharing options...
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