Engine Error
P0622
Generator Field F Control Circuit Malfunction
Severity
High
Symptoms
Battery warning light illuminated, dead battery, erratic electrical functions
Common Causes
- Failed alternator (generator)
- Broken wire in the alternator control circuit
- Corroded connector at the alternator
- Defective PCM voltage regulator circuit
How to Fix
- 1 Test and replace the alternator
- 2 Repair wiring harness to the alternator
- 3 Clean electrical connector contacts
- 4 Test PCM output signal
Estimated Repair Cost
USD
$50
–
$650
Wiring repair: $100; Alternator replacement: $300 - $650