P1246 MAZDA – Alternator Load Input Failed

P1246 MAZDA Possible Symptoms

Engine Light ON (or Service Engine Soon Warning Light)

P1246 MAZDA Possible Causes

Faulty Alternator/Generator,Alternator/Generator harness is open or shorted,Alternator/Generator circuit poor electrical connection,Damaged Powertrain Control Module (PCM)

P1246 MAZDA Description

The Powertrain Control Module (PCM) monitors generator load from the generator/regulator in the form of frequency. The frequency range is determined by the temperature of the voltage regulator where 97% represents full load, below 6% means no load.