I hate to revive such an old thread but I guess it's better than creating a new one! I've just run across this same problem. I replaced both sensors for good measure since they were never replaced and for a little while all was fine. Then one day, on startup, it threw the above mentioned code. I reset it and it stays off for the duration of the drive, but as soon as I restart the truck the code reappears.

Anyone have any luck diagnosing this? TIA!

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