P2744Transmission Fluid Temperature Sensor B Circuit Intermittent
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Needs a drive cycle to confirm a fix
- How the car detects it
- P2744 covers brief dropouts or jumps in the sensor B signal that do not last long enough for the steady low or high codes. No manufacturer documents P2744 publicly; the makers that do use sensor B (GM and Ford dual-clutch units, Mitsubishi Twin Clutch SST) file erratic readings under P2741 instead. By analogy, Ford's 2012 strategy for the main sensor names P0714 alongside open, short and in-range checks. CARB requires such inputs to be watched for wiring faults and for readings beyond their scale. Practical causes are a loose terminal in the gearbox connector, a chafed lead near hot or moving parts, or corrosion that only acts under vibration or heat. The fault often vanishes at the workshop, so freeze-frame data and wiggle tests matter.
- What you may notice
- Warning lamp that comes and goes
- Short spikes in fluid temperature B on the scan tool
- Likely causes
- LikelyLoose or spread terminal in the transmission connector
- PossibleHarness to sensor B chafing on hot or moving parts
- RareMoisture or corrosion in the connector
- Repair
- Medium · Usually a job for a workshop.Typical cost: €50 – €700
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.