LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Infiniti >> 2008 >> G35 Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 17 (Security Control System) >> Ecu Diagnosis >> Intelligent Key Unit >> DTC Index
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC Index

WARNING: This page is about a different car, the 2008 Infiniti QX56. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Details of time display
  • CRNT: Displays when there is a malfunction now or after returning to the normal condition until turning ignition switch OFF → ON again.
  • 1 - 39: Displayed if any previous malfunction is present when current condition is normal. It increases like 1 → 2 → 3...38 → 39 after returning to the normal condition whenever ignition switch OFF → ON. The counter remains at 39 even if the number of cycles exceeds it. It is counted from 1 again when turning ignition switch OFF → ON after returning to the normal condition if the malfunction is detected again.
DTC INDEX

CONSULT display Detection condition Fail-safe Diagnosis
No DTC is detected.
further testing may be required.
- - -
U1000: CAN COMM CIRCUIT Intelligent Key unit cannot receive CAN communication signal continuously for 2 seconds or more. - Check CAN communication system.
Refer to U1000 CAN COMM CIRCUIT 
U1010: CONTROL UNIT (CAN) Intelligent Key unit detects internal CAN communication circuit malfunction. - Replace Intelligent Key unit.
B2013: STRG COMM 1 The ID verification result between Intelligent key unit and steering lock solenoid are NG. Or Intelligent Key unit cannot communicate with steering lock solenoid. x Perform steering lock unit ID registration with CONSULT-III
B2552: INTELLIGENT KEY Intelligent Key unit internal malfunction. x Replace Intelligent Key unit.
B2590: NATS MALFUNCTION The ID verification result between Intelligent key unit and BCM are NG. Or Intelligent Key unit cannot communicate with BCM. x Check NATS
Refer to B2590 ID DISCORD BCM-I-KEY