The Nissan TCM is like a small computer that needs RAM be able to function. An P1702 OBDII trouble code indicates that the memory portion of the transmission control unit is no longer working, which means the TCM will not be able to perform its assigned functions.
How Serious is the Code?
A Nissan P1702 diagnostic trouble code is very serious, and can lead to erratic transmission behavior, and possibly the inability of the transmission to function.
Symptoms of a P1702 include:
- Erratic transmission behavior
- Nonworking transmission
- Failed TCM
How to Diagnose the Code?
In order to diagnose the Nissan P1702 OBD2 trouble code, a technician will need to connect a scan tool to the vehicle’s OBDII port, then follow the prescribed Nissan testing procedure.
What Repairs Will Fix P1702?
- Replace the Nissan TCM