P280A code meaning
Transmission Range Sensor A Circuit Not Learned
Powertrain system Generic code P28xx codes Check engine light
What P280A means
P280A means the module holds no valid learned reference for range sensor A, so it cannot translate the raw signal into a reliable selector position. This is typical after replacing the sensor, the gearbox or the control module, after a software update, or when a learn run was aborted. No manufacturer documents this code publicly; CARB 13 CCR 1968.2 only requires that transmission inputs are checked. Why learning matters is shown by Ford's 2019 hybrid summary, which accepts each selector position only inside narrow voltage windows of the sensor, and by Audi bulletin 2051686, which calls for all basic settings after a new TCM and position sensor. A relearn with a scan tool is normally the fix. P280B is the B side.
P280A at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyMedium
- Typical labor0.3 to 1.5 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P280A
- Warning lamp right after a repair or update
- Engine does not start or gear display missing
Common causes of P280A
- Most likelyLearn procedure skipped after replacing sensor, gearbox or module
- PossibleLearn run aborted, for example by low battery voltage
- PossibleLearned values cleared by a software update
- Less likelySensor signal outside the learnable window
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Transmission range sensor aTCM
What each part of P280A means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| 8 | Area: transmission. |
| 0A | The exact fault in that area. |
What to do next
- Note P280A 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 P280A
What does P280A mean?
P280A means "Transmission Range Sensor A Circuit Not Learned". P280A means the module holds no valid learned reference for range sensor A, so it cannot translate the raw signal into a reliable selector position. It is a generic code, so it means the same on every make.
Is it safe to drive with P280A?
Drive gently and only to a workshop. With P280A the car can go into limp mode (reduced power) to protect itself.
Will P280A fail an emissions test?
Yes, it can. P280A is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P280A to fix?
Difficulty: medium. A typical repair takes 0.3 to 1.5 hours of work. This is a job for a workshop.
Will P280A clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.