P28EC

Q: Can I keep driving with this code?

The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical. Use the Wrenchify app for a full diagnosis specific to your vehicle.

Shift Motor Position Sensor Exceeded Learning Limit

High severity

The required adaptation offset for the shift motor position sensor exceeds the calibrated learning window. Sensor or mechanism out of nominal range.

Common causes

Mechanical wear shifted end-stops
One of the most commonly reported causes for this code — check this first.
high
Typical part cost: $440-2420
Sensor reference drifted
A plausible cause — test and verify before replacing parts.
medium
Typical part cost: $440-2420
See all causes + fix costs
Create a free Wrenchify account to unlock the rest for P28EC.
Unlock causes
Free forever · No credit card

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.

Get the full step-by-step diagnosis

Create a free Wrenchify account to unlock the rest for P28EC.

Unlock diagnosis

Free forever · No credit card

Related codes

See related trouble codes

Create a free Wrenchify account to unlock the rest for P28EC.

Unlock related codes

Free forever · No credit card

Frequently asked questions

What does P28EC mean?

P28EC means "Shift Motor Position Sensor Exceeded Learning Limit". It is a generic OBD-II code that points to a fault in the auxiliary emission controls.

What are the most common causes of P28EC?

mechanical wear shifted end-stops; sensor reference drifted — 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.

Get the full P28EC diagnosis for your vehicle

Year, make, model + step-by-step repair help — free plan included.

Diagnose P28EC