Alternator Load Input Failed
Table of contents
P1246 Possible Causes
- Faulty Alternator/Generator
- Alternator/Generator harness is open or shorted
- Alternator/Generator circuit poor electrical connection
- Damaged Powertrain Control Module (PCM)
How do I fix code P1246?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Cost of diagnosing the P1246 code
The cost of diagnosing the P1246 code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P1246 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.