P0622: owner reports and bulletins

Powertrain (generic, all makes). We haven't written the explanation for this code yet. Below is what owners and manufacturers have filed with NHTSA.

Got P0622 on your scanner? Tell the mechanic your year, make, model and any symptoms and you'll get the likely cause and what to check first. Ask about this code.

What owners report to NHTSA

3 complaints filed with NHTSA mention P0622, 2 of them since 2015, across 3 different models. The component owners most often filed it under: electrical system.

Manufacturer service bulletins that name P0622

3 technical service bulletins and manufacturer communications filed with NHTSA mention P0622, from 2 makes. A bulletin means the manufacturer has documented a known cause or a fix procedure for that model. Examples:

  • CHEVROLET CRUZE (2016), bulletin 10083075: 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 CHA…
  • CHEVROLET SILVERADO 1500 (2011, 2012, 2013, 2014), bulletin 10113959: 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 …
  • GMC SIERRA 2500 (2011, 2012, 2013, 2014), bulletin 10113959: 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 …

Sources: NHTSA Office of Defects Investigation complaint database and manufacturer communications file, snapshots September 2026. A complaint or bulletin that mentions a code is a report about that vehicle, not a statement that the code has one cause.