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Home >> Ford >> 2006 >> Focus ZX5 SE, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 15 (Engine Controls - Powertrain DTC Charts & Description (Except Diesel & Hybrid)) >> Diagnostic Trouble Code (DTC) Charts And Descriptions >> DTC P1650: Power Steering Pressure (PSP) Switch Malfunction

DTC P1650: Power Steering Pressure (PSP) Switch Malfunction

WARNING: This page does not describe the selected car, but rather 32 other vehicles, including the 2005 Mercury Sable, 2005 Mercury Mountaineer, 2005 Mercury Monterey, 2005 Mercury Montego, and 2005 Mercury Mariner. However, it is still accessible from the selected car via links, so may be relevant.
P1650 - POWER STEERING PRESSURE (PSP) SWITCH MALFUNCTION

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/shorting bar damaged
  • SIG RTN circuit open
  • PSP circuit open or shorted to SIGRTN
Diagnostic Aids:   
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All GO to FF: Power Steering Pressure (PSP) Switch STEP FF2. GO to FF: Power Steering Pressure (PSP) Switch STEP FF1. -
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