OBD 2007 & Check Engine Light

[dmb40]

On my 2007 package 6, with Coastals unlocks, 3,500 miles I am getting a check engine light. I have pulled up the on board system check and found all is good (except the lack of a DVD player which is not yet installed in the coastal hacking options) and in checking the LAN option found some codes. I erased the codes and rechecked, no codes. Good news, but the check engine light is still on. I have checked the fuel cap and really do not want to go to the dealer as they said it would be a minimum of 4 hours to diagnose the problem.

Any thoughts would be helpful.

Is there an online list of diagnostic code definitions? That would be real handy!!!


Dave

[Frank Hudon]

<div class='quotetop'>QUOTE(Dave Santa Barbara @ Mar 5 2007, 01:24 PM) [snapback]400542[/snapback]</div>

On my 2007 package 6, with Coastals unlocks, 3,500 miles I am getting a check engine light. I have pulled up the on board system check and found all is good (except the lack of a DVD player which is not yet installed in the coastal hacking options) and in checking the LAN option found some codes. I erased the codes and rechecked, no codes. Good news, but the check engine light is still on. I have checked the fuel cap and really do not want to go to the dealer as they said it would be a minimum of 4 hours to diagnose the problem.

Any thoughts would be helpful.

Is there an online list of diagnostic code definitions? That would be real handy!!!
Dave
[/b]

this car is under warranty and with the CEL on it's Toyota's responsibility to check and fix the problem.

[efusco]

let me add that it's probably not a good idea to clear those codes unless you know what's wrong and that the codes aren't important or you make it more difficult for the dealer to find the problem.

I also wanted to make sure you'd had at least 3 start-up cycles for the car...that's usually necessary to get rid of the CEL if there's nothing serious wrong.

[galaxee]

the MFD service menus do not tell you OBD codes. you need a scantool to pull those.

[SunnyvalePrius]

<div class='quotetop'>QUOTE(Dave Santa Barbara @ Mar 5 2007, 01:24 PM) [snapback]400542[/snapback]</div>

On my 2007 package 6, with Coastals unlocks, 3,500 miles I am getting a check engine light. I have pulled up the on board system check and found all is good (except the lack of a DVD player which is not yet installed in the coastal hacking options) and in checking the LAN option found some codes. I erased the codes and rechecked, no codes. Good news, but the check engine light is still on. I have checked the fuel cap and really do not want to go to the dealer as they said it would be a minimum of 4 hours to diagnose the problem.

Any thoughts would be helpful.

Is there an online list of diagnostic code definitions? That would be real handy!!!
Dave
[/b]

The diagnostic code definitions are in the 2007 Prius Repair Manual, and that is on-line at techinfo.toyota.com, but it is not free. A one-day subscription is $10. For that $10 you can download as many different files as you can in that one day, so it makes sense to try to download as much as you can that you think might be useful. The Repair Manual is in hundreds of separate PDF files -- probably to discourage people from just downloading the whole thing.

[c4]

As Galaxee stated, the "secret" MFD menus do *not* display the engine codes, they show only AVC-LAN and MFD codes (so, things like MFD errors, codes to do with the stereo system, and the navigation will show up here). Clearing the MFD codes will have no effect on the "Check Engine" light (mainly because they have nothing at all to do with the engine management system). You need to buy a OBD scanner (specifically one that will work with the CAN bus) in order to pull up (and clear) the engine codes..

[bhaynnes]

I have a question about the "engine service required" light. Mine came on this morning. I have 4,600 miles on the car is that just the normal service it is talking about?

[Tempus]

<div class='quotetop'>QUOTE(bhaynnes @ Mar 6 2007, 12:13 PM) [snapback]400930[/snapback]</div>

I have a question about the "engine service required" light. Mine came on this morning. I have 4,600 miles on the car is that just the normal service it is talking about?
[/b]

Yes, it will come on every 5K to remind you to change the oil. The dealer can reset it, or you can reset it yourself if you change the oil. Instructions are on here several places.

[hobbit]

Does your OBD2 tool have the "enhanced" or "manufacturer-specific"
ability? Without that you're probably going to be unable to talk
to all the ECUs and pull anything other than the P0xxx type, and
if your problem is off in P1xxx land or higher, the generic tools
are SOL.
.
_H*

[dmb40]

<div class='quotetop'>QUOTE(hobbit @ Mar 6 2007, 11:53 AM) [snapback]401065[/snapback]</div>

Does your OBD2 tool have the "enhanced" or "manufacturer-specific"
ability? Without that you're probably going to be unable to talk
to all the ECUs and pull anything other than the P0xxx type, and
if your problem is off in P1xxx land or higher, the generic tools
are SOL.
.
_H*
[/b]

Thank you for all the information. I ordered a cheap? $100 scannner and will try to pull some info off the system and reset the light. If there is something wrong it will show up again I am sure. I will let y'all know the scoop when I have it....if I can get codes... A "Toyota Specific" scanner is big bucks and the dealership has eroded any confidence I might have in reasonable servicing by the way they have treated me on the phone thus far. I will probably choose to drive an hour and try another dealer before I try the local one if the $100 scanner fails to do the job.