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2020 CADILLAC XT6
3.6L V6•FWD•AUTOMATIC•gas
4 active safety recalls on this vehicle — view recalls
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Repairs0Labor473Torque3265Fluid7DTC2012Battery1Maintenance0Recalls4
P0622moderate severityPowertrain

Generator Field "F" Control Circuit

on 2020 Cadillac XT6 3.6L V6 · FWD

What this code means

The PCM detected a fault in the generator field (F terminal) control circuit. This affects the alternator's ability to regulate output.

Symptoms

  • Under- or over-charging
  • Battery warning light
  • Electrical system instability

Common causes

  • Faulty field control circuit
  • Alternator internal fault
  • Wiring open or short
  • Faulty PCM driver

Diagnostic steps

  1. Test field control circuit voltage
  2. Inspect wiring and connectors
  3. Check alternator output under load
  4. Replace alternator or repair wiring
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