Help with codes 720, 1501, 605
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Help with codes 720, 1501, 605
Hello,
New guy to the site. I have a 2000 F250 with the 7.3 Powerstroke and 215k miles. Pretty much stock except for the chip, have it set in tow mode and have for years now.
Anyway, detecting some trouble with my transmission lately, slipping when I start out in drive and getting the OD flashing light. Took it to the tranny shop today and they read the following codes with their new snap on device. PO 720, 1501 and 605. They dont think it is a tranny problem and recommended I take it to the Ford dealer for further diagnostics, thinking it's more an electrical problem.
Can anyone give me some advice on this, could it be something besides the transmission like they say? I have done a search on all the codes individually but not sure how they all might come together. Any info appreciated before I take it in to the dealer.
New guy to the site. I have a 2000 F250 with the 7.3 Powerstroke and 215k miles. Pretty much stock except for the chip, have it set in tow mode and have for years now.
Anyway, detecting some trouble with my transmission lately, slipping when I start out in drive and getting the OD flashing light. Took it to the tranny shop today and they read the following codes with their new snap on device. PO 720, 1501 and 605. They dont think it is a tranny problem and recommended I take it to the Ford dealer for further diagnostics, thinking it's more an electrical problem.
Can anyone give me some advice on this, could it be something besides the transmission like they say? I have done a search on all the codes individually but not sure how they all might come together. Any info appreciated before I take it in to the dealer.
Post Fiend
Joined: Mar 2007
Posts: 26,966
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From: Texas
Not much of a tranny shop if you ask me.
P0605 is from your chip. Ignore it.
P0720 OSS circuit malfunction.
P1501 VSS out of self test range
I'd start by removing and cleaning the VSS & OSS to see if that makes a difference. How long has it been since you flushed the tranny fluid?
The VSS is the sensor on top of the rear diff. Clean the area around it with a rag, then it's just a 10mm socket to remove it.
The OSS is the sensor on the rear of your tranny.
And welcome to FTE.
P0605 is from your chip. Ignore it.
P0720 OSS circuit malfunction.
P1501 VSS out of self test range
I'd start by removing and cleaning the VSS & OSS to see if that makes a difference. How long has it been since you flushed the tranny fluid?
The VSS is the sensor on top of the rear diff. Clean the area around it with a rag, then it's just a 10mm socket to remove it.
The OSS is the sensor on the rear of your tranny.
And welcome to FTE.
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Joined: Feb 2010
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Thanks Chris, I didnt have time to track it down today but will take a look tomorrow. Not sure what I'm looking for but at least I have a place to start.
Is it cheap enough to buy these parts and replace them myself? If so where would you recommend I buy them? Dealer, internet, International parts place? Paul
Is it cheap enough to buy these parts and replace them myself? If so where would you recommend I buy them? Dealer, internet, International parts place? Paul
Freshman User
Joined: Aug 2009
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From: Alb.
Welcome and i too am having the same problem. The parts you are asking about are cheep and easy to replace. OSS was something like 40 bucks from the dealer and the VSS was something around the that as well. For the codes, yes it is an electrical problem. But maybe you'll have more luck fixing it than i have had. my 01 250 v10 which has the same trans as you PSD has been in and out of the shop for around 6 months now. I just went back in yesterday. But i have now clue on what to tell for exactly what it might be because we have replaced a lot of inexpensive and expensive parts. Check this out. P0720- Replaced Sensor & Still Need Help. - Page 3 - Ford Truck Enthusiasts Forums
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