P1244 Possible Causes
- Faulty alternator/generator
- Alternator/generator harness is open or shorted
- Poor electrical connection in alternator/generator circuit
- Damaged Powertrain Control Module (PCM)
How is code P1244 repaired?
Start by checking the “Possible Causes” listed above. Visually inspect the wiring harness and related connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.
Possible Symptoms
- Check Engine Light on (or Service Engine Soon warning light)
P1244 Meaning
The Powertrain Control Module (PCM) monitors generator load from the generator/regulator as frequency. The fault indicates that the input is lower than what the load should be during normal operation. The load input may be high when there is a battery shorted to ground.