P0622 on 2011-2014 Jeep Grand Cherokee (Laredo, Limited, Overland, Summit, SRT) — Generator Field "F" Terminal Control Circuit
1 vehicles · 1 makes
Most Reported On
P0622 is an OBD-II diagnostic trouble code meaning “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. This code is most commonly reported on 2011-2014 Jeep Grand Cherokee (Laredo, Limited, Overland, Summit, SRT).
Common Causes
Diagnostic Tools
To diagnose P0622, you'll need an OBD-II scanner. Here are our recommendations at every price point.
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FAQ
What does P0622 mean?
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.
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?
Repair costs vary widely depending on the root cause and vehicle.
Which vehicles are affected by P0622?
Au7o has documented P0622 across 1 vehicle models from 1 manufacturers: Jeep.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.