P07F3 code meaning
Transmission Range Control Module Communication Circuit Low
What P07F3 means
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.
P07F3 at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modePossible
- Repair difficultyHard
- Typical labor1 to 3 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P07F3
- Shift warning
- Possible shift lock or neutral (depends on manufacturer)
Common causes of P07F3
- PossibleCommunication wire shorted to ground
- Less likelyModule output stage faulty
- Less likelyMoisture or corrosion in the connector
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Shift by wire moduleCommunication wiringTransmission control module
What each part of P07F3 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 7 | Area: transmission. |
| F3 | The exact fault in that area. |
What to do next
- Note P07F3 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P07F3
What does P07F3 mean?
P07F3 means "Transmission Range Control Module Communication Circuit Low". The transmission range control module is the separate shift-by-wire control unit that reads the selector and drives the range actuator. It is a generic code, so it means the same on every make.
Is it safe to drive with P07F3?
Drive gently and only to a workshop. With P07F3 the car can go into limp mode (reduced power) to protect itself.
Will P07F3 fail an emissions test?
P07F3 is not an emissions code, so on its own it usually does not fail an emissions test. Other stored codes or a lit check engine light still can.
How hard is P07F3 to fix?
Difficulty: hard. A typical repair takes 1 to 3 hours of work. This is a job for a workshop.
Will P07F3 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.