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Home >> Infiniti >> 2018 >> QX30 Essential, AWD >> Repair and Diagnosis (Single Page) >> Steering >> Steering Control Systems >> Steering Control System (DTC/Circuit Diagnosis) >> DTC/Circuit Diagnosis >> DTC P1644: Control Unit >> DTC Description >> Possible Cause
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Possible Cause

DTC

MELCO code

Possible cause

P1644-00

50
  • Internal malfunction
  • Vehicle coding miss-setting

P1644-00

72

Inconsistent of setting

P1644-00

73

Inconsistent informations between ECU variant and CAN variant
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