Possible causes GEN-COM circuit short to GND. GEN-MON circuit short to GND. Open B+ wire during operation. Low system voltage. Broken generator belt. Damaged generator/regulator assembly. Damaged PCM. Tech notes Verify the battery voltage is 14.5 volts. Verify the generator/regulator
FORD Technical Service Bulletins for P1245 code 2000 FORD FOCUS UNKNOWN OR OTHER 2001 FORD FOCUS UNKNOWN OR OTHER 2000 FORD FOCUS 980000 UNKNOWN OR OTHER 2001 FORD FOCUS 980000 UNKNOWN OR OTHER
P1245 BUICK – Intake Plenum Switchover Valve
P1245 CADILLAC – Intake Plenum Switchover Valve
P1245 CHEVROLET – Intake Plenum Switchover Valve
P1245 GMC – Intake Plenum Switchover Valve
P1245 SUBARU – Wastegate control solenoid valve malfunction (fail-safe)