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2008 Toyota Sienna trouble codes

Tiny
MIKE PATRICK
  • MEMBER
  • 2008 TOYOTA SIENNA
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 30,000 MILES
My sienna started but idled very rough then died and would'nt start, after 10 min it started ran fine.I buoght a code reader and got p0031, poo51, po351thrup0356 my reader tells me these are problems whith the heater control and ignition coil. Its been 2 days since the problem and is running fine, are these problems that need to be looked into. Thank you
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Friday, November 13th, 2009 AT 7:56 AM

1 Reply

Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Hi mike patrick,

Thank you for the donation.

When problems are intermittent, it is difficult to diagnose the problem. Since problem has not recurred, there is a possibility the cause was a loose connection somewhere and might not occur again untill much later.

The only thing that you can and need to check for would be connections of wire harness and the ignition coils. Other than that, you would have to wait for the problem to occur to get into diagnostics.
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Friday, November 13th, 2009 AT 12:39 PM

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