P28EB
Shift Motor Position Not Learned
The TCM has not learned the end-stop calibration for the shift motor. Gear positions cannot be commanded with full precision until adaptation completes.
The TCM has not learned the end-stop calibration for the shift motor. Gear positions cannot be commanded with full precision until adaptation completes.
Common causes
- high
Adaptation lost after battery disconnect or TCM reset
One of the most commonly reported causes for this code — check this first.
Typical part cost: $440-2420
- medium
Shift motor replaced without learn procedure
A plausible cause — test and verify before replacing parts.
Typical part cost: $440-2420
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First things to check
- 1Confirm the code with a scan tool and check for additional related codes.
- 2Inspect the relevant sensors, wiring, and connectors for damage or corrosion.
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Related codes
See related trouble codes
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Frequently asked questions
What does P28EB mean?
P28EB means "Shift Motor Position Not Learned". It is a generic OBD-II code that points to a fault in the auxiliary emission controls.
What are the most common causes of P28EB?
adaptation lost after battery disconnect or tcm reset; shift motor replaced without learn procedure — these are the most commonly reported causes. Verify with a proper diagnosis before replacing parts, or use the Wrenchify app for a vehicle-specific diagnosis.
Can I keep driving with this code?
This code can put the vehicle into limp or reduced-power mode. Avoid extended driving and have the vehicle diagnosed promptly. Use the Wrenchify app for a full diagnosis specific to your vehicle.
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