P1621 — Mazda: Immobilizer System Fault

Code breakdown

Manufacturer-specific meanings (Mazda)

• Fiat
  Immobilzer code words do not match
• BuickCadillacChevroletGMGMCOldsmobileSaturn
  PCM Memory Performance
• Mazda
  Immobilizer System Fault
• Volkswagen
  Engine Coolant Temperature Signal Short To Ground

Related codes

• P1600 — Manufacturer-specific fault code
• P1600-buick — PCM Battery
• P1600-cadillac — PCM Battery
• P1600-chevrolet — PCM Battery
• P1600-fiat — Perdita di potenza KAM, interruzione
• P1600-ford — Loss of KAM Power Open Circuit

Owner experiences (0)