Diagnosis Procedure
WARNING: This page is about a different car, the 2020 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK DTC PRIORITY
If DTC P2138 is displayed with DTC P0643, first perform the confirmation procedure (trouble diagnosis) for DTC P0643.
Is DTC P0643 detected?
YES
Perform diagnosis for P0643. Refer to DTC Description .
NO
GO TO 2.
- CHECK APP SENSOR 1
Check APP sensor 1. Refer to Diagnosis Procedure .
Is the inspection result normal?
YES
GO TO 3.
NO
Repair or replace error-detected parts.
- CHECK APP SENSOR 2
Check APP sensor 2. Refer to Diagnosis Procedure .
Is the inspection result normal?
YES
GO TO 4.
NO
Repair or replace error-detected parts.
- CHECK SENSOR POWER SUPPLY 2 CIRCUIT
Refer to Diagnosis Procedure .
Is the inspection result normal?
YES
Perform the trouble diagnosis for ECM power supply circuit. Refer to Diagnosis Procedure .
NO
Repair or replace error-detected parts.