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P0503 Diagnostic Trouble Code Discussion for June 2014

VSS Circuit Intermittent

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Trouble Ticket Help Requests for DTC P0503
Help Request Posted
1999 Cadillac Seville SLS 4.6L No Start VIN: 1G6KS54Y7X
P0503: Vehicle Speed Sensor Circuit Malfunction. ... and cus say speedometer reading wrong so we found p0503 and p0440 code after we replace so speed sensor and the fuel tank pressure sensor then we clear the code and then try to start,vehicle crank but would not start we get spark but no injector pulse and ...
June 17, 2014