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P1921 Diagnostic Trouble Code Discussion for July 2006

Transmission Range Signal


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Trouble Ticket Help Requests for DTC P1921
Help Request Posted
1999 Saab 9-5 2.3L MIL Lamp on, Data bus VIN: YS3ED58E8X
P1921: TCM code - No bus data from Trionic. ... car was towed in, customer reports that, while driving on the Interstate, 70-75 mph, car jerked and 'Check-engine' light came on. Drove for awhile and 'Check Gearbox' light came on (car is an automatic). Next the cruise control, A/C and instrument panel dr...
July 23, 2006