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P1550 Diagnostic Trouble Code Discussion for October 2004

Battery Current Sensor Range/Performance

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Trouble Ticket Help Requests for DTC P1550
Help Request Posted
1999 Volkswagen Jetta TDI 1.9L Poor Fuel Economy, MIL Lamp on, reduced power VIN: 3VWRF81H9X
P1550: manifold absolute pressure control difference. ... power, but no MIL light. A/C problem was intermitant, only happened at higher ambient temps. Traced to temp two pin sensor in upper radiator hose, replaced. Problem solved. Low power: attempted to do output diagnostic test mode using the Autoscan, was unab...
October 17, 2004