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P1603 Diagnostic Trouble Code Discussion for September 2006

PCM Internal Shutdown Timer Rationality

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Trouble Ticket Help Requests for DTC P1603
Help Request Posted
2001 Volvo S80 T6 2.8L Poor Fuel Economy VIN: YVITS90D51
P1603: do not know could not find any information. We do not see a lot of volvos, the car lacks power and the message center says low power. I did not know where to start can you help thanks.
September 07, 2006