P07F3Transmission Range Control Module Communication Circuit Low
- Generic OBD-II code · Powertrain
- Can trigger limp mode
- How the car detects it
- The transmission range control module is the separate shift-by-wire control unit that reads the selector and drives the range actuator. P07F3 is the electrical low check of its communication line: the line is shorted to ground and stays at a low level. No manufacturer document available to us uses it; the code fits a dedicated signal or redundancy line between selector, range control module and transmission or engine module rather than a CAN bus. GM handles a bus short under its own U2409 (bus off for 1 s, two trips). The module may block range changes or select neutral.
- What you may notice
- Shift warning
- Possible shift lock or neutral (depends on manufacturer)
- Likely causes
- PossibleCommunication wire shorted to ground
- RareModule output stage faulty
- RareMoisture or corrosion in the connector
- Repair
- Hard · Usually a job for a workshop.Typical cost: €100 – €800
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.