DTC Diagnosis Procedure

WARNING: This page is about a different car, the 2019 Nissan NV3500 HD and 2019 Nissan NV2500 HD. However, it is still accessible from the selected car via links, so may be relevant.

CHECK DTC OF UNIFIED METER AND A/C AMP.
With CONSULT

Perform "Self Diagnostic Results" in "METER/M&A".

Is any DTC detected?

YES

Check DTC detected item. Refer to DTC Index .

NO

GO TO 2.
CHECK DTC OF TCM
With CONSULT

Perform "Self Diagnostic Results" in "TRANSMISSION".

Is any DTC other than "P1721" detected?

YES
- Check DTC detected item.
  Refer to DTC Index .
NO

Replace the control valve & TCM. Refer to Removal and Installation .