P0622 on Chrysler: How to Diagnose & Fix
Generator Field "F" Terminal Control Circuit
1 Chrysler model · 1 documented issue · 1 critical
P0622 on Chrysler by model: symptoms, diagnosis and fix
Both 3.6L and 5.7L engines with 160, 180, or 220 amp alternators prone to sudden failure. Voltage regulator in PCM can fail. Internal diode failures cause battery drain, fires, and loss of power while driving.
Common Symptoms
- Battery warning light illuminated
- Dead battery despite recent replacement
- Vehicle stalling or dying while driving
- Burning smell from alternator area
How to Fix
Alternator replacement with updated unit per recall. Free replacement under recall for affected vehicles. Check PCM voltage regulator function. Verify alternator connections properly seated.
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Sources for this issue (3)
P0622 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does P0622 mean on a Chrysler?
P0622 stands for "Generator Field "F" Terminal Control Circuit." A fault in the generator field 'F' terminal control circuit that the PCM uses to control alternator field excitation and regulate output. The circuit is open, shorted, or not responding as commanded. On Chrysler it is documented across 1 model: 300.
What are the most common causes of P0622?
The most common causes of P0622 are: Faulty alternator/voltage regulator, Open or short in the 'F' terminal circuit, Corroded/damaged wiring or connectors, Poor ground, Internal PCM driver fault. The specific cause varies by vehicle.
How much does it cost to fix P0622 on a Chrysler?
Repair costs vary widely with the root cause and Chrysler model; each issue on this page carries its own estimate where one is published.
Looking for P0622 on a different make?
View P0622 across all makes →Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.