computer codes P2106 and P2135 help

Discussion in '2005 - 2009 Specific Tech' started by miloman, May 1, 2007.

  1. I've been having problems with these two codes lately. The wrench light keeps coming on. about two weeks ago I took the car to the dealer here in Reno. They can't seem to read the codes. They also put almost 400 miles on the car and couldn't get the light to come on. Either they just don't know what they're doing or they're screwing me around.

    I just had a Steeda CAI and a custom Predator tune done today (by RDW Automotive here in Reno). The guy cleared the computer before he even started. He took it for a quick test drive and the wrench light came on twice. He mysteriously managed to pull the codes P2106 and P2135. I know they're for the throttle control. And I'm pretty sure there is a TSB for this......05-14-4.

    1. What is wrong with Ford?

    2. Do I need to tune the computer back to stock when I take it to Ford to fix this? I'm sure they will want to read the computer.

    3. Is there a place (online) I can get a detailed description and copy of this TSB without having to pay?

  2. Now to answer your questions.

    1. everything

    2. yes I would and then reflash it after they are done.

    3. I can get them for you. But I can't link you to it because it's on a ford internal website.
  3. TSB 05-14-4


    P2135 - VEHICLES BUILT 11/29/2004 AND PRIOR

    2003-2005 Thunderbird
    2005 Crown Victoria, Mustang
    2004-2005 Explorer, F-150
    2005 E-Series, Expedition, F-Super Duty

    2003-2005 LS
    2005 Town Car, Navigator

    2005 Grand Marquis
    2004-2005 Mountaineer

    This article supersedes TSB 05-09-15 to update the Issue and Dealer Coding.

    Some vehicles built 11/29/2004 and prior may exhibit the wrench light on with both P2106 and P2135 diagnostic trouble codes (DTCs).

    Replace the throttle position sensor (TPS) following the instruction sheet included in the TPS service kit. Reprogram the powertrain control module (PCM) to the latest calibration using WDS release B36.11 and higher, or B37.2 and higher. This new calibration is not included in the B37 CD. Calibration files are also available at the website.


    Parts Block


    Labor Operations Claiming Chart

    WARRANTY STATUS: Eligible Under Provisions Of New Vehicle Limited Warranty Coverage And Emissions Warranty Coverage

    9E928 42

    ALLDATAs changes their pictures url often, so the pics might go away soon.
  4. Be careful. You may need to have your tune updated after they recalibrate your PCM. I know that sometimes you do with the XCal, I don't know if it's the same for the Predator.
  5. With the predator you shouldn't need new tunes. Diablosport predators are different from the sct xcal2. He just needs to put his stock intake and tune back in so he doesn't loose his diablo tunes and and have the tsb on the tps and pcm reflash performed under warranty. Once done, reinstall cai/tune and have fun. if he ever switches to sct for some reason then his calibration code on the pcm under the hood is no longer correct and he needs to know what new code his current code updates to. when the dealer updates his pcm the code will more than likely change as well.
  6. I kind of figured as much, but I thought I'd throw it out there anyway, as a precaution.

    Well, I'm getting sick of trying to deal with Ford. They aren't going to take my word for it. I haven't taken the car back in but I know they aren't willing to fix the problem. So, I bought the TPS kit the TSB says to use. I can install the TPS but how am I going to reprogram the PCM? Does it even need it? The instructions with the kit doesn't say anything about the PCM. The TSB sheet does, but the kit instructions does not.:shrug:
  8. Hate to raise a 3 yr old post but I just got a 2005 Mustang GT with 60K on it. Over the last 2 months I have had the car going into the engine failsafe mode. It has happen 3 times but no engine light. I had Autozone check for soft codes and these were there. Now today engine safe mode 2 times and the second one I get the light, checked at autozone and they are hard codes now.

    I will attempting to clean everything again as another site suggested. The throttle body was pretty dirty and that cleaning seemed to help but obviously not.

    So I plan on replace it myself but I can not recalibrate the PCM myself. So never saw an answer, does it need to be done? If soo question can someone else but the dealership do it? Lastly, either way how much does it cost? Seems to me Ford should at least do the recal for free but I am sure they won't.

  9. Hi ericsfo,

    Welcome to the forum! I can understand how frustrating it must be to be experiencing this on your Mustang. A recall is issued when Ford and the National Highway Traffic and Safety Administration work together to proactively identify areas of concern. There was not a recall for this issue. A Technical Service Bulletin (TSB) is a supplement to a vehicle's repair manual and does not suggest nor provide additional coverage outside of the warranty. If you choose to have it diagnosed at your local dealer, they will provide you with a written estimate before beginning the repair.

  10. Hey Natasha I appreciate the response all be it a bit of a corporate type response.

    I was not saying a "recall" but a "recal"ibration of the PCM. This what they should do for free at a minimum. Changing the part is easy the PCM is not if you don't have the tools.*
    I understand the point of recalls but if you, Ford, put out a bad designed part why should the consumer pay to right the wrong. I understand parts fail but in this case it is well noted it was a design flaw not a part that just ran it's life cycle.*

    The cost of parts will be about 75-100 and to recalibrate the PCM I am sure will be about the same. So I am out 100+ because of a design flaw. That's all I was saying.

    Thanks Eric
  11. Ok just talked to the ford service dept, 90$ to recalibrate the PCM. Sorry but what a rip off. A faulty Ford part and even if I replace it at my expense it still cost me another 90 ford to recalibrate it. Sounds like a win win for Ford and a lose lose for the consumer.

    So is the PCM recalibration necessary or will it work fine without? That is the question I had originally.
  12. Hi, all. Hope someone can shed some light on this problem. Two months ago, while driving around town, the "wrench" light came on in my '05 Mustang (63,000 pampered miles). The car went into "limp" mode. I was near a Firestone store so I took it there for repair. They ran diagnostics and replaced the throttle position sensor (TPS). They used a Ford part. A week later, the same thing happened. Firestone then stuck in a NEW, new TPS. One week later -- same problem once again. Firestone threw up their hands and apologized for not being able to diagnose the problem. Money refunded. Reluctantly I then took the car to the local Ford dealer. They declared that the throttle body needed replacement. They wanted $840 to replace this $350 part. I said "No dice" and had another garage install it. One day later -- SAME problem returns!

    Some time ago, I accepted the fact that this expensive Mustang (which I bought nearly new from a dealer - only 3,000 miles on it) is a flat-out lemon (bad weld in the front cowl, resulting in catastrophic passenger compartment flooding during heavy rains; defective fuel-fill auto-shutoff mechanism in gas tank, causing fuel nozzles to shut off every couple of seconds, even if the tank is empty; exterior paint literally rubbing off of the surfaces of the car; and most recently a broken gear shift mechanism that causes the red needle to stay on "P" all the time, regardless of what gear the car is in.

    But I still owe money on this miserable car and have little choice but to have this "wrench light" problem definitively repaired.

    Can anyone offer any suggestions? Many thanks.
  13. Not sure why you posted in this thread instead of creating a new one. The purpose of this site is to be a community for Mustang enthusiasts and yes we help each other with problems. That said, your 8 yr old car is not a lemon. My advise first to you would be stick with one garage so they can be familiar with the problem and attempts to repair it. Modern cars and electronics are tough to diagnose. Take the car to the dealer, explain what has occurred and what has been attempted. Allow them to make the diagnosis and repair. Best of luck.
  14. Thanks for your reply, Gearheadboy. I may be old-fashioned, but I paid $25,000 for this car and it has a few too many manufacturing defects, which are acknowledged by Ford (for which they offer no recalls and no fixes). So I do consider it a lemon. (Details above, in my original post. -- Cowl needs re-welding, entire car needs proper paint job, and [according to the dealer last week] it needs a differently-designed gas tank, but none is available for the Mustangs produced when mine was manufactured.)