The front brake solenoid valve is operated in relation to data coming from a number of sensors, including the PNP switch, the throttle position sensor and the vehicle speed sensors. If there is a malfunction that is preventing the operation of this solenoid valve, a P1759 FR/B Solenoid Function will be saved.
How Serious is the Code?
The P1759 Nissan diagnostic trouble code is quite serious, and can result in a number of transmission problems including erratic shifting, and failed shifts.
Symptoms of a P1759 include:
- Erratic shifting
- Failed shifts
- Harsh shifts
- Damaged wiring and/or connectors
- Failed front brakes solenoid valve
- Failed ATF pressure switch 1
How to Diagnose the Code?
In order to diagnose a P1759 OBDII code, the wiring and connectors along the transmission wiring harness will need to be checked for signs of damage and corrosion. Ground connections will also need to be checked. After that, the front brake solenoid valve and ATF pressure switch 1 will need to be checked using an appropriate OBDII scan tool.
What Repairs Will Fix P1759?
- Repair or replace damaged wiring and connectors
- Replace front brake solenoid valve
- Replace ATF pressure switch 1