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What is Codes PO122 & PO303? - Ranger Ford Cars & Trucks

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P0122 = TPS (throttle position sensor) voltage reports too low. This means that you could have a problem with the TPS, the wires to the TPS or the computer, if you have not replaced the TPS or do not want to do this work, I would take it in to a shop for this to be done. The TPS may require adjusting after replacement.
P0303= Cylinder Number 3 Missfire Detected, this means that the number 3 cylinder has miss fired, probably set this code as a result of the P0122 code. I would repair code P0122 and clear both codes. Hope this helps, let me know.

Posted on Aug 04, 2010

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