P0622: Generator Field "F" Terminal Control Circuit
2 vehicles · 2 makes · $10-$2,400 repair
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 2008-2014 Dodge Challenger (SE/SXT, R/T, SRT8, 392), and 2011-2014 Jeep Grand Cherokee (Laredo, Limited, Overland, Summit, SRT), with repair costs ranging from $10 to $2,400.
Common Causes
Typical Repair Cost
Based on 4 documented vehicle-specific issues. Actual cost depends on root cause and vehicle.
Diagnostic Tools
To diagnose P0622, you'll need an OBD-II scanner. Here are our recommendations at every price point.
ANCEL AD310 Classic OBD-II Scanner
by ANCEL
A simple, affordable code reader that reads and clears check engine codes. Great for quick diagnostics on any OBD-II vehicle (1996+).
- Read & clear engine codes
- View freeze frame data
- I/M readiness status
- No batteries or app needed
BlueDriver Pro Bluetooth Scanner
by BlueDriver
Bluetooth OBD-II scanner with a free companion app. Provides enhanced diagnostics, smog readiness, and repair reports sourced from a database of verified fixes.
- Enhanced diagnostics (ABS, SRS, transmission)
- Repair Reports with verified fixes
- Smog check readiness
- Free app (iOS & Android)
LAUNCH CRP123X OBD-II Scanner
by LAUNCH
A professional-grade handheld scanner that reads all four major systems (engine, transmission, ABS, SRS) with live data streaming and graphing.
- Engine, transmission, ABS, SRS diagnostics
- Live data stream & graphing
- AutoVIN for vehicle identification
- Free lifetime updates via Wi-Fi
Autel MaxiCOM MK808S Diagnostic Tool
by Autel
Shop-level diagnostic tablet with bi-directional control, active tests, and full system coverage. Ideal for serious DIYers and small shops.
- All-system diagnostics (25+ modules)
- Bi-directional control & active tests
- Oil reset, EPB, BMS, TPMS, injector coding
- 7-inch touchscreen with Android OS
As an Amazon Associate, we earn from qualifying purchases. Prices are approximate and may vary.
Vehicles Affected (2)
Power-Steering Noise (Groan/Whine/Honk) at Low Speed & EHPS Assist Loss Tied to the Alternator Recall
Sudden alternator failure causing stall, electrical loss, and fire risk (Recalls 14V634 & 17V435)
Dodge Challenger Engine Stalls / Shuts Off While Driving (Alternator & TIPM/Fuel-Pump-Relay Failure)
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 for P0622 range from $10 to $2,400, depending on the vehicle and root cause.
Which vehicles are affected by P0622?
Au7o has documented P0622 across 2 vehicle models from 2 manufacturers: Dodge, Jeep.
Sources (12)
- ForumRepairPal — Honk, Hiss, or Groan Noise From When Steering at Low Speeds: Dodge Challenger
- articleMotorBiscuit — The 4 Most Common Dodge Challenger Problems Reported to RepairPal (loud power steering)
- TSBCarComplaints — 2009 Dodge Challenger TSBs (incl. steering gear honk/hiss/groan, return hose)
- RecallNHTSA Part 573 Safety Recall Report 17V-435 (EHPS alternator failure, Chrysler recall T36)
- RecallNHTSA Recall 17V435000 — 2012 Dodge Challenger Alternator/EHPS (Justia)
- ForumChallengerTalk — 2011-2014 Alternator Recall (EHPS assist loss / stalling discussion)
- RecallNHTSA Recall 14V-634: Chrysler/Dodge/Jeep Alternator Sudden Failure (Part 573 Safety Recall Report)
- RecallRepairPal: Recall 14V634000 — Alternator Failure, Chrysler/Dodge/Jeep
- RecallNHTSA Recall 17V-435: Alternator Diode Thermal Fatigue (3.6L/5.7L, EHPS, expanded population)
- ForumCarComplaints.com — 2012 Dodge Challenger Alternator Went Out (owner complaints)
- ForumCarComplaints.com — 2012 Dodge Challenger Electrical Problems (overview)
- articleThe Car Connection: 1.3 million Chrysler/Dodge/Jeep recalled for alternator failure
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.