P0622Subaru BrzYears: 1996 - 2026
Generator/Alternator Control Circuit (P0622)
Reviewed by ASE Certified Technician
What does this mean?
Code P0622 indicates a problem with the generator/alternator control circuit.
Disclaimer: This diagnostic code is part of the standard OBD2 system and can apply to Subaru Brz models manufactured from 1996 to 2026. However, please note that the presence of this specific code depends on your vehicle's exact engine configuration, options, and production year.
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Common Causes
Faulty alternator or voltage regulator
Weak or failing battery
Damaged, chafed, or broken wiring harness
Corroded or loose electrical connector
Symptoms to Watch For
- Check Engine Light is illuminated
- Battery draining or low voltage warning
- Engine stalling or dying unexpectedly