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

WARNING: This page is about a different car, the 2007 Mercury Mariner and 2007 Ford Escape. 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 vehicle speed signal (VSS) input is out of self-test range. If the PCM detects a VSS input signal any time during the self-test, DTC P1501 is set and the test aborts.
Possible Causes:	Noisy VSS input signal from the radio frequency interference / electromagnetic interference (RFI/EMI) external sources, such as ignition wires, the charging circuit or after market equipment
Diagnostic Aids:	Check for VSS input to be 0 km/h (0 mph) when the vehicle transmission is in PARK.
Application		Key On Engine Off	Key On Engine Running	Continuous Memory
All		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, DTC P1501 is set and the test aborts. Verify the vehicle is not moving during the KOER self-test.