Code P1609 after ECM update

Frank Service Manager Las Vegas, Nevada Posted   Latest  
Discussion
Driveability
2003 Jaguar S-Type Sport 4.2L 5-spd—SAJEA03V131M79782
P1609

After fixing a number of vacuum leaks, and updating the ECM with our factory Jaguar scanner, we are getting code # P1609 internal control module failure and no communication.

Do I have any recourse as we used the factory tool? Is there any way to recover this?

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Kevin Educator
Ocala, Florida
Kevin
   

Frank, have you tried to disconnect battery cables about 30 minutes and touch together before re-connection of fully charged battery. Switch key on and let sit for approx. 1 minute to allow throttle reset.

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Frank Service Manager
Las Vegas, Nevada
Frank
 

We have doe this for other reasons, we will try again.

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Frank Service Manager
Las Vegas, Nevada
Frank
 

Yes, we did that and same results

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Robert Engineer
Durham, North Carolina
Robert
 

Hello Frank! I don't have much to offer you besides a question. Where is the P1609 being reported? That must be coming from the ECU which was updated by flashing or by changing it out physically? That sounds so much like all the stuff we see with Daimler all the time if the coding does not fit right for the vehicle.

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Frank Service Manager
Las Vegas, Nevada
Frank
 

Hi bob, it is from the PCM - with the Jag computer there are no options (like MB), follow screen instructions "update existing control unit"

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Frank Service Manager
Las Vegas, Nevada
Frank
 

Thank you for the replies, we will order a replacement ECU

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Jeff Manager
Manchester, Missouri
Jeff
 

Frank, I'm wondering how the ECU is reporting with no communication. To me sounds more like a corrupted file than a hardware problem. That being said, I would try a hard reset overnight and see if you can reload the software, we have recovered a few ECU's this way. Also, are you using the old WDS or the IDS for programming? We use Autologic primarily and when we flash a ECU there are usually 7

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Michael Mobile Technician
Clinton, Utah
Michael
 

Frank, It may be possible to repair this ECU on the bench by taking known good flash from a donor and program into the original. Best chance is to have both on the bench. I do this with VAG vehicles all the time. My best guess is that the vehicle had an aftermarket tune causing the crash. We all sign an agreement when buying the factory software that takes any liability off the manufacturer…

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Frank Service Manager
Las Vegas, Nevada
Frank
 

We did an overnight hard reset and we will try to program as a new unit this morning - if there is still an issue i will reach out to you

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Keith Diagnostician
Fayetteville, North Carolina
Keith
 

Those codes a fairly common on the jags. We have had much success with used units and they are usually very cheap. Lkq usually has a great supply. Very common on the x type to see that. However usually on them it doesn't turn the light on.

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Tom Technical Support Specialist
Commack, New York
Tom
 

Hi Frank, P1609 unfortunately means the ECM is done. It has an internal fault, whicj is a polite way of saying the internal components (microprocessors) are inoperative. In this case the microprocessors cannot communicate to each other "internally". Replace the ECM and program it. Tom …

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Frank Service Manager
Las Vegas, Nevada
Frank
 

we are still working on this, replaced the ECU and have had a heck of a time programming it. We are up to uploading the VID block, and our factory scanner, SDD, is asking for password? We are subscribed to TOPIX programming - system is asking for a 14 charter password. our first time seeing this

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Michael Mobile Technician
Clinton, Utah
Michael
 

Hi Frank, I don't know how helpful this is but there is a TSB that goes over programming. I believe it is 1-186 published 11/04. I browsed through it and don't see anything about a password.

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Frank Service Manager
Las Vegas, Nevada
Frank
 

We do have that, and you are correct - there is no mention of password - hence our problem - thanks

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Michael Mobile Technician
Clinton, Utah
Michael
 

Do you still have your Autologic Tool? They have programming for Jaguar now. You may be able to use an older version of SDD that does not require the password. For me, I just clone the European PCMs most of the time. Where your original is corrupted, it would take more work to reconstruct. Usually if you can get a used ECU out of an indentical Jaguar the VIN and immo can be corrected from the…

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Frank Service Manager
Las Vegas, Nevada
Frank
 

we are not able to clone, not sure how that is accomplished - we do have the Autologic - put not interested in 3K to update the Jag portion of our subscription - it is because autologic only programs ECU for engines and we need to be able to update all modules. However, I will reach out and see if they will do a onetime pay as you go and try this - Thank you for the reply

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Frank Service Manager
Las Vegas, Nevada
Frank
 

The update issue is what got us here, performing the update created the crash

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Frank Service Manager
Las Vegas, Nevada
Frank
 

anyone know how we can get the VID block file? we need to download it and have written Jag only to be in an email loop with no information - (can I add a bounty)

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