P1244 Alternator Load Input Failed High

Possible causes
  • GEN-MON circuit short to B+.
  • GEN-COM circuit short to B+.
  • B+ open prior to start-up.
  • Open GEN-COM prior to start-up.
  • Open I-line prior to start-up.
  • Damaged PCM.
    • Tech notes
  • Verify the battery voltage is 14.5 volts.
  • Verify the generator/regulator has the correct part number.

    • Symptoms
    – Engine Light ON (or Service Engine Soon Warning Light)
    P1244 Description
    The PCM monitors generator load from the generator/regulator in the form of frequency. The fault indicates the input is lower than the load should be in normal operation. The load input could be high when a battery short to ground exists.
    P1244 Information for specific makes
    P1244 ACURA
    P1244 FORD
    P1244 SUBARU