In order to determine which gear to use based upon the current driving conditions, the TCM relies on data from a number of sensors including the park neutral position switch, throttle position sensor and vehicle speed sensors. Although this data directly affects the operation of the direct clutch solenoid valve, which also affects the function of the ATF pressure switch 5. If there is an issue with the function of the D/C Solenoid Valve, a P1764 OBDII code will be set.
How Serious is the Code?
The P1764 Nissan diagnostic trouble code is very serious, and can drastically affect the operation of the transmission.
Symptoms of a P1764 include:
- Erratic shifts
- Failed gear engagement
- Harsh gear changes
- Damaged wiring and/or connectors
- Failed direct clutch solenoid valve
- Failed ATF pressure switch 5
How to Diagnose the Code?
The first step that a technician should take when trying to diagnose a P1764 OBD2 code, is to check the condition of the wiring and connectors along the transmission wiring harness. If no issues are found, then the direct clutch solenoid valve and ATF pressure switch 5 will have to be checked using an OBDII scan tool.
What Repairs Will Fix P1764?
- Repair or replace damaged wiring and/or connectors
- Replace direct clutch solenoid valve
- Replace ATF pressure switch 5