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Re: GRANDSONS 2006 VOLVO S60 P0503
The P0503 is a trans output speed sensor fault code (Volvo code - TCM-0083 - signal too low). These sensors are not uncommon to fail. The part number (30713952) is the same for input and output sensors. I would swap the two sensors in the car and drive to see ... Login to read more. ![]()
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