What P1745 means
This is a diagnostic trouble code (DTC) reported by your vehicle's onboard OBD-II system when a specific fault is detected in the powertrain.
Common causes (general)
Before spending money on parts, verify the code with a scan tool and read freeze frame data. Freeze frame captures every sensor value at the moment the code set — this is often enough to figure out the root cause without further testing.
Manufacturer-specific descriptions
Different manufacturers use this code for slightly different failure modes. Here's what your specific make means by P1745:
| CHRYSLER | Transmission Line Pressure Too High for Too Long; Pressure Regulator 1; Transmission system problems |
| FORD | Line Pressure Solenoid System |
| GM | NSBU Mode "B" Circuit High |
| JAGUAR | Pressure Regulator 1 |
| LINCOLN | Transmission System Problems |
| MAZDA | Line Pressure Solenoid |
| MERCURY | Transmission system problems |
| MITSUBISHI | Line Pressure Solenoid System; CVT-ABS communication line open |
| NISSAN | Line Pressure Solenoid System |
| OTHER | Line Pressure Solenoid System |
| VOLKSWAGEN | Transmission Control Unit Relay Short To B+ |
Read this code on your own car
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