2008 - Replace Accelerator Pedal or ??

Please ask your shop for the actual, exact trouble codes they are seeing, and post those here. A trouble code is five characters, where the first is a P, C, B, or U, the next is a 0, 1, 2, or 3, and the rest can be any digit 0 through 9 or letter A through F.

A Prius has sensors both on the accelerator pedal and on the throttle itself (two sensors, for redundancy, in each place), and there are codes about one and codes about the other, and they all look similar and they all have similar descriptions that start "throttle / pedal position sensor / switch", and people mix them up all the time. It's no fun replacing the wrong thing.

Here is a post you can refer to for more information.

 

Since this is rarely posted as a problem, I would think there would be plenty of used parts available. All will be somewhat reliable, due to the rare failure occurrences that are listed on this forum.

In fact I might have one for sale LOL

 

Pretty sure this has shown up several times previously and is always a misunderstanding of the DTC.

 

X2 for having the actual trouble code(s).

A (not uncommon) scenario is to have a P1121, which many "generic" scantools or google defines as a fault with throttle or accelerator position sensors.

On a Gen 2 Prius, that (manufacturer specific) code points to a common fault with the coolant control valve.

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