OBD-II Code Decoder

P1221 — vehicles with official records naming this code

P1221 is named in NHTSA-published manufacturer communications or investigations for 12 vehicle families, including:

• GMC Envoy model years 2002-2005 · 11 records
• Chevrolet Trailblazer model years 2002-2004 · 9 records
• Buick Rainier model years 2004-2005 · 4 records
• Chevrolet Corvette model years 2001-2002 · 4 records
• Oldsmobile Bravada model years 2004 · 3 records
• Chevrolet Suburban model years 2001 · 2 records
• Chevrolet Silverado model years 2001 · 2 records
• Chevrolet Tahoe model years 2001 · 1 record
• GMC Yukon model years 2001 · 1 record
• Chevrolet Express model years 2001 · 1 record

A code named in a manufacturer communication means the document refers to it for those vehicles. It is not a diagnosis of any car, and it does not mean the code is common on that vehicle.