Reference meaning
What does this code mean?
The wording below belongs to the named make and communication. Match the complete code, reporting module, model year and engine before applying it.
A code identifies a detected condition, not a part that must automatically be replaced.
Narrow by vehicle
A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
Before replacing a part
Record codes and freeze-frame data. Check battery condition, related codes and visible wiring or hose damage. Follow the vehicle's diagnostic procedure and test results before replacing parts.
Scan worksheet →Manufacturer communications
11Original wording in English
CHEVROLET
THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO THE TECHNICIAN ON THE STEPS TO DIAGNOSE AND REPAIR VEHICLES THAT STALLED WHILE DRIVING AND OR WILL NOT CRANK OVER AND OR THE BATTERY LIGHT OR SERVICE CHARGING SYSTEM MESSAGE BEING ON. TECHNICIAN MAY FIND DIAGNOSTIC TROUBLE CODE P0622 SET. TECHNICIAN SHOULD INSPEC…
CHEVROLET, GMC
This Preliminary Information communication provides information to the technician the steps to diagnose and repair vehicle with a Service Charging System message or Service Engine Soon Malfunction Indicator Lamp and the Engine Control Module may have set a P0621 and/or P0622. These concerns could be caused by the generator wirin…
CHEVROLET, GMC
SERVICE ENGINE SOON LAMP BEING ILLUMINATED. WITH DIAGNOSTIC TROUBLE CODES P0507, P0621 OR P0622. GM VOICEMAIL EXPRESS. *TT
CHEVROLET, GMC
DIAGNOSTIC TROUBLE CODE (DTC) P0621 AND/OR P0622. BATTERY CHARGE INDICATOR ILLUMINATED ON INSTRUMENT PANEL CLUSTER (IPC). *TT
Check vehicle applicability
30A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Cadillac | CTS ↗ | 2004 |
| Chevrolet | COLORADO ↗ | 2004 |
| Chevrolet | CRUZE ↗ | 2016 |
| Chevrolet | SILVERADO 1500 ↗ | 2011 |
| Chevrolet | SILVERADO 2500 ↗ | 2014 |
| Chevrolet | SILVERADO 2500 ↗ | 2013 |
| Chevrolet | SILVERADO 2500 ↗ | 2012 |
| Chevrolet | SILVERADO 2500 ↗ | 2011 |
Code meaning and manufacturer information
Original wording in English · Historical directory labels; manufacturer applicability has not been established for every entry.
Generator Field “F” Control Circuit Malfunction
Can I keep driving?
A code alone cannot establish whether driving is safe. A flashing malfunction light, severe shaking, overheating, oil-pressure warning or loss of braking or steering needs prompt attention. Stop in a safe place and seek assistance when control or engine safety is affected. Follow the vehicle handbook.