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Honda Odyssey EX: 2009 Odyssey, Flashing "D" check engine light

Customer Question
2009 Odyssey, Flashing "D" check...
2009 Odyssey, Flashing "D" check engine light on, VSA light on, no automatic transmission shift...what's happening?
Submitted: 6 years ago.Category: Honda
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Answered in 2 minutes by:
12/8/2011
Mechanic for Honda: Amedee, Former ASE Master Technician replied 6 years ago
Amedee
Amedee, Former ASE Master Technician
Category: Honda
Satisfied Customers: 27,111
Experience: ASE certified tech advanced level specialist. Wisconsin certified emissions state inspector
Verified
Hello!

The computer has detected a malfunction with the transmission control systems. If it was emission related, it would have turned the check engine light on. You will need to get your computer scanned for codes and have this checked out by either a Honda dealership or a transmission shop unless you want to try and pull codes yourself.
The VSA light is on because of the same reason.
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Customer reply replied 6 years ago
I brought it to a repair shop and they say it is a bad altenator, but I do not believe and altenator would cause shifting problems
Mechanic for Honda: Amedee, Former ASE Master Technician replied 6 years ago
This does happen from time to time. IF the alternator was over or under charging, then it could be possible. Just get a voltmeter and put it on the battery with the engine at idle. IT should read close to 14.0 volts.
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Customer reply replied 6 years ago
Thanks for the reply. It was hard for me to believe it was the alternator so I took it to a Honda dealer. They discovered the main wiring harness in the engine compartment was chewed away by rodents. I had it replaced - ok now
Mechanic for Honda: Amedee, Former ASE Master Technician replied 6 years ago
YUP! That will do it!

I hope this helps! Please don't forget hit the green accept button so that I may get credit for the time that I have spent with you. This is necessary for me to be paid for my work and get credit for assisting you. Your question will not close, and you will still have the opportunity to follow-up if needed. Leaving a bonus and positive feedback is not required, but doing so is certainly appreciated!

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Thanks in advance!

Best Regards

AMEDEE
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Amedee
Amedee
Amedee, Former ASE Master Technician
Category: Honda
Satisfied Customers: 27,111
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Experience: ASE certified tech advanced level specialist. Wisconsin certified emissions state inspector

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