DTC P1650: Power Steering Pressure (PSP) Switch Out Of Self-Test Range

WARNING: This page does not describe the selected car, but rather 25 other vehicles, including the 2012 Lincoln Navigator L, 2012 Lincoln Navigator, 2012 Lincoln MKZ, 2012 Lincoln MKX, and 2012 Lincoln MKT. However, it is still accessible from the selected car via links, so may be relevant.

P1650 - POWER STEERING PRESSURE (PSP) SWITCH OUT OF SELF-TEST RANGE

Description: In the key ON engine OFF (KOEO) self-test, this DTC indicates the PSP input to the PCM is high. In the key ON engine running (KOER) self-test, this DTC indicates the PSP input did not change state.
Possible Causes: The steering wheel must be turned during KOER self-test PSP switch damaged SIGRTN circuit open PSP signal or ground circuit open PSP signal circuit short to ground
Diagnostic Aids: Check if the vehicle was towed or a power steering repair was carried out. Observe the PSP PID while checking the wires for intermittent concerns.
Application	Key On Engine Off	Key On Engine Running	Continuous Memory
All	GO to PINPOINT TEST FF .