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Help - Error codes P0015 P0304 C1201 B2799

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Old 04-04-13, 04:10 PM   #1
gousri
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Default Help - Error codes P0015 P0304 C1201 B2799

My Lexus was working fine till yesterday, but today when I started (button press) it, it started giving me a Check VSC error and Check engine light along with Slip Indicator started showing up

Took it to Autozone for the codes and got
P0015
P0304
C1201
B2799

Taking it to Toyota dealer tomorrow, but any help in the mean time is much appreciated ! Thanks !
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Old 04-04-13, 06:06 PM   #2
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The P0015 is a variable valve timing fault code. Before starting the engine ensure that there is no oil dripping from the engine compartment onto the ground/floor, or if there is any heavy clicking or other "ugly" noises when you start the engine. If there is, have it towed to the dealer.
The P0304 is the code for a cylinder #4 misfire which I believe is the result of the over retarded valve timing issue.
Ensure that the dealer checks that the latest VVT oil supply tubes (one per cylinder bank) are installed. There is a TSB associated with the failure of these tubes.
Hopefully it's just something simple such as the failure of the associated variable valve timing solenoid.
Was anything done to the car recently?
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Old 04-05-13, 07:25 AM   #3
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c1201 is an ECU fault, and B2799 is an immobilizer fault. Both could be the result of a failing ECU. The B2799 could also be a failing smart key computer or a problem with the wiring between it and the ECU.

This car definitely needs to see the dealer.
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Old 04-07-13, 08:26 AM   #4
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Thanks for all the replies.

I popped the hood and tried to check the fuse to reset the ECU, but did not find anything that stood out... I was still able to drive the vehicle though the ride was shaky, so I took the vehicle to the dealer and the first thing they noticed ---- some DAMN RODENT ate up a couple of wires on top of the Engine.

P0015 - was for Camshaft
P0304 - Fuel injector issue
the other 2 came up because of the ones above.


Dealer was charging me $350 to $400 to fix wires and then wanted to see if the problem existed, but I asked them to leave it as is, took it to a local mechanic and told him I found the wires were cut by a rodent... he told me one of the wires was for fuel injector and other one for Camshaft even before I told him the codes... so he fixed it and covered all the wiring with plastic case for $130...

There was no other problem after that.. all warning lights disappeared and the ride was smoother than before.

Suggestion : whenever the codes above show up, just open the engine cover (lid) just to see if something stands out ! Was so worried but fortunately (or unfortunately) it was a rodent bite
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Old 04-08-13, 06:05 AM   #5
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Glad it was an easy fix! WHEW!

Next it is time to call Billy the Exterminator!
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Old 04-08-13, 07:51 AM   #6
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For future reference, the fuse you want to look for to reset the ECU will be labeled ECU-B and may be in the fusebox inside the car, not necessarily under the hood.
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Old 04-16-13, 06:51 AM   #7
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HI all, my 2007 ES350 csv light came on yesterday, wife filled the tank only change to normal driving. I read to open and reseal the gas cap....no change.....yet. Cleaned the seal around the gas cap also. Read the error codes above, many thanks. Will look for rodent bites and maybe find lost cat...lol. Any other idease before Lexus of London visit?
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Old 04-16-13, 08:24 AM   #8
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We've seen rodent wiring issues quite a few times at our dealership. In a lot of cases we see dog food piled up in the engine bay too. Usually, the customer keeps their dog food in the garage along with their car. So you've got a food source and a heat source (engine) and now you have rats chewing wiring.
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Old 04-16-13, 08:24 AM
 
 
 
 
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