DTC P1501: Vehicle Speed Sensor (VSS) Out Of Self-Test Range

WARNING: This page does not describe the selected car, but rather 32 other vehicles, including the 2011 Mercury Milan, 2011 Mercury Mariner, 2011 Mercury Grand Marquis, 2011 Lincoln Town Car, and 2011 Lincoln Navigator L. However, it is still accessible from the selected car via links, so may be relevant.

P1501 - VEHICLE SPEED SENSOR (VSS) OUT OF SELF-TEST RANGE

Description:	Indicates the VSS input signal is out of self-test range. If the PCM detects a VSS input signal any time during the self-test, the DTC P1501 sets and the test aborts.
Possible Causes:	Noise on the VSS input signal from the radio frequency interference or electro magnetic interference External sources, such as ignition wires, the charging circuit or aftermarket equipment
Diagnostic Aids:	Verify the VSS input is 0 km/h (0 mph) when the vehicle transmission is in PARK.
Application	Key On Engine Off	Key On Engine Running	Continuous Memory
F-Series Super Duty	GO to PINPOINT TEST DF .
Manual Transmission	GO to PINPOINT TEST DP .
All others	The powertrain control module (PCM) uses information from the anti-lock brake system (ABS) module and the transmission control module (TCM) to calculate vehicle speed. Check these modules for DTCs.