P2748Intermediate Shaft Speed Sensor B Circuit Intermittent
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- Needs a drive cycle to confirm a fix
- How the car detects it
- P2748 records short interruptions in the sensor B circuit that heal before a permanent fault can be confirmed. Ford is the one maker that documents it: in the 2024 OBD summary, P2748 is the intermittent check of intermediate shaft sensor B on its ten-speed automatics, run continuously alongside the circuit code P2745 and the plausibility code P2746 within a 30 s monitoring window. Because the signal recovers, the fault often appears only under vibration, at high fluid temperature or when the harness flexes with engine movement. Freeze-frame data showing speed, gear and temperature at the moment of the dropout narrow the search. Replacing the sensor without checking pins and harness rarely ends the problem; drivers may notice occasional harsh shifts.
- What you may notice
- Warning lamp that comes and goes
- Occasional harsh shift or shift flare
- Likely causes
- LikelyTerminal with weak contact pressure in the sensor or gearbox connector
- PossibleHarness rubbing through and touching ground intermittently
- PossibleMoisture or corrosion in the connector
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Usually a job for a workshop.Typical cost: €80 – €900
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.