Possible causes
– Vehicle speed sensor harness is open or shorted
– Vehicle speed sensor electrical circuit poor electrical connection
– Faulty Vehicle speed sensor
– Vehicle speed sensor electrical circuit poor electrical connection
– Faulty Vehicle speed sensor
When is the code detected?
The Vehicle speed sensor (VSS) signal was detected during the initial self test.
FORD Technical Service Bulletins for P1501 code
1997 FORD EXPEDITION POWER TRAIN
1997 FORD F SERIES POWER TRAIN
1998 FORD EXPEDITION POWER TRAIN
1998 FORD F SERIES POWER TRAIN