In order to choose the optimal shift program, the TCM needs data from a number of sensors including the park neutral position switch, vehicle speed sensors and throttle position sensor. All of this data allows the TCM to operate the input clutch solenoid valve. There is a problem with the function of the input clutch solenoid valve, a P1754 DTC will be set.
How Serious is the Code?
The P1754 Nissan diagnostic trouble code is fairly serious, and can keep the transmission from shifting properly.
Symptoms of a P1754 include:
- Harsh shifting
- Erratic transmission behavior
- Wiring and/or connector damage
- Failed input clutch solenoid valve
How to Diagnose the Code?
When diagnosing a P1754 Nissan OBD2 code, the first step should be to inspect the wiring and connectors along the transmission wiring harness. If the technician does not find any shorted wires, bad ground connections, or broken/corroded connectors, then the input clutch solenoid valve itself should be tested.
What Repairs Will Fix P1754?
- Repair or replace damaged wiring or connectors
- Replace input clutch solenoid valve