P2801Transmission Range Sensor B Circuit Range/Performance
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- Here the B signal of the range sensor is electrically present but its content does not make sense. On sensors with a pulse-width output, Ford checks the carrier frequency: its 2024 summary sets P2801 (UDS P2800_38) on the 6R80, 6R140, 10R60 and 10R80 automatics when the frequency leaves 125 Hz plus or minus 25 Hz, while the 2012 summary applies the same test to the 250 Hz signal of the DPS6 dual-clutch box. On the hybrid eCVT, Ford's 2019 summary instead compares two sensor angles and fails it beyond 3.85 degrees, with the wrench lamp only. Ford SSM 49822 lists P2801 among range and fluid temperature sensor codes on 2020-2021 Super Duty trucks with the 10R140. P0706 is the A-side counterpart.
- What you may notice
- Warning lamp with shift quality or gear display issues
- Transmission uses a fixed substitute range strategy
- Likely causes
- LikelyRange sensor electronics producing a wrong signal frequency
- PossibleDamaged or loose pins at the transmission connector
- RareSensor shifted on its shaft so the angles disagree
- 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 – €700
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.