P1600: Loss of KAM Power; Open Circuit

HighPowertrainEngine/Powertrain

What does P1600 mean?

P1600 is a diagnostic trouble code indicating "Loss of KAM Power; Open Circuit". This means there is an electrical break in the engine/powertrain wiring — a connector may be unplugged, a wire broken, or a component has failed internally. The ECU detected no signal where it expected one.

Common causes

  • Damaged or corroded wiring harness
  • Loose or disconnected electrical connector
  • Failed engine/powertrain sensor or actuator
  • Blown fuse in the related circuit
  • Poor ground connection

What should you do?

This is a significant issue that should be diagnosed and repaired soon. Avoid long trips or heavy driving until the problem is resolved. Continued driving may cause additional damage.

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Related codes

P1601ECM/TCM Serial Communication Error
P1602Immobilizer/ECM Communication Error
P1603EEPROM Malfunction
P1604Code Word Unregestered