Code result
P280B
Transmission Range Sensor B Circuit Not Learned
Moderate severity
What it means
The TCM has not learned the calibration window for transmission range sensor B. Selector positions cannot be mapped reliably until adaptation completes.
Is it safe to drive?
Use caution
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical.
Most likely causes
Adaptation lost after battery disconnect or TCM reset
highOne of the most commonly reported causes for this code — check this first.
Sensor replaced without learn procedure
mediumA plausible cause — test and verify before replacing parts.
Related help
Get the full diagnosis
Add your vehicle and see step-by-step repair help, recalls, and TSBs in Wrenchify.
Diagnose P280B freeNo credit card required