P2745 is the general circuit code for a second intermediate shaft speed sensor, called B. Such a sensor reads a shaft that turns between input and output, on a dual-clutch box typically the second clutch shaft. Ford's 2024 OBD summary documents it: its ten-speed automatics carry two intermediate sensors (the eight-speeds only one), and P2745 means sensor B has an open circuit or a short to ground, while a short to battery appears as P07C8. These hardware checks mature in roughly 1.5 s and run even when the car stands still. On Ford's TR9070 dual-clutch unit, the even-gear clutch shaft sensor is filed under the same P2745 family. Without the signal the module loses one ratio reference, so harsh shifts or a fixed limp-home gear are likely.
Medium severity. Can I keep driving?Drive gently to a repair shop. If it slips, you hear clunks, or it loses its gears, do not keep driving.
Symptoms
- Check engine light and transmission warning
- Harsh or delayed shifts
- Limp-home mode with a fixed gear
Most likely causes
- Signal or supply lead to sensor B broken or chafed to ground
- Corroded or loose pins at the transmission connector
- Internal fault of intermediate shaft speed sensor B
- Faulty sensor input in the transmission control module
What to check, in order
Start with the simplest. You can tick off each step.
Good to know
- Repair difficulty: hard
- It can trigger limp mode.
- It affects emissions.
What each character of P2745 means
- P: Powertrain: engine and transmission
- 2: Generic code: same on every make
- 7: Transmission
- 45: Specific fault in that system
Frequently asked questions
Can I keep driving with code P2745?
Drive gently to a repair shop. If it slips, you hear clunks, or it loses its gears, do not keep driving.
What causes code P2745?
The most common causes are: signal or supply lead to sensor B broken or chafed to ground; corroded or loose pins at the transmission connector; internal fault of intermediate shaft speed sensor B.
Related codes
- P2746Intermediate Shaft Speed Sensor B Circuit Range/Performance
- P2747Intermediate Shaft Speed Sensor B Circuit No Signal
- P2748Intermediate Shaft Speed Sensor B Circuit Intermittent
- P07C7Intermediate Shaft Speed Sensor B Circuit Low
- P07C8Intermediate Shaft Speed Sensor B Circuit High
- P0791Intermediate Shaft Speed Sensor A Circuit
Sources
- fordservicecontent.com: OBDSM2400OUTPUT 16Jul2024 WSM final V2 MCS7001
- law.cornell.edu: 13 CCR 1968.2
Values and procedures vary by manufacturer. If it affects brakes, steering, fuel or high voltage, see a professional. Updated: 2026-11-04. How we build these pages.