P0949 Auto Shift Manual Adaptive Learning Not Complete

P0949 indicates auto shift manual adaptive learning is not complete. The transmission controller has not finished the learned calibration needed for shift operation.

Code details

Generic OBD-II · P0

System: Transmission
Code type: Generic (SAE / ISO controlled)
Standard: SAE J2012 / ISO 15031-6

Diagnostic boundary

A diagnostic trouble code reports that a monitored test failed. It does not prove one specific part is bad, and manufacturer logic can add vehicle-specific conditions.

Do not force adaptations repeatedly until any blocking faults and required relearn conditions are corrected.

Symptoms of P0949

Harsh, delayed, or slipping shifts, or being stuck in one gear.
Check-engine light, sometimes with limp-home mode.
Flaring RPM or a shudder under load.

Common causes of P0949

Low or degraded transmission fluid.
A failing speed sensor, shift solenoid, or pressure-control circuit.
Wiring, connector, or internal hydraulic/mechanical faults.

Useful checks before replacing parts

Check whether clutch, actuator, gear position, or pressure relearn procedures were interrupted after service, battery loss, or module replacement.
Scan for companion actuator, position, voltage, hydraulic pressure, or communication codes that prevent adaptive learning from completing.
Verify prerequisites such as fluid temperature, battery voltage, brake input, shifter state, and manufacturer relearn steps.

Related OBD-II codes

These nearby transmission entries can help compare wording and pin down the fault area.