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Home >> Lincoln >> 2012 >> MKZ Hybrid >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 37 (Engine Controls (Except Diesel & Hybrid) - Powertrain DTC Descriptions - DTC P0571 - P1674) >> DTC P1633: Keep Alive Power (KAPWR) Voltage Too Low

DTC P1633: Keep Alive Power (KAPWR) Voltage Too Low

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P1633 - KEEP ALIVE POWER (KAPWR) VOLTAGE TOO LOW

Description:  Indicates the KAPWR circuit has experienced a voltage interrupt.
Possible Causes: 
  • KAPWR circuit open
  • KAPWR intermittent
Diagnostic Aids:  Loss of KAPWR to the PCM results in immediate malfunction indicator lamp (MIL) illumination and sets DTC P1633.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All GO to PINPOINT TEST QB .