Goodman GMVC960803BN Error Code Eb2: Blower Motor HP/ID Mismatch
What Does Code Eb2 Mean?
Error code Eb2 on the Goodman GMVC960803BN indicates a mismatch between the horsepower of the ECM blower motor physically installed in the furnace and the horsepower specification stored in the shared data set on the integrated control module. The furnace cannot operate because this mismatch means the control cannot properly calculate airflow targets or safely operate the motor.
The shared data set, which is loaded onto the control board via a memory card, includes the expected motor horsepower for the specific furnace model. If the motor installed in the furnace is a different HP than specified in the data — for example, if the wrong replacement motor was ordered or installed — the control module will detect the discrepancy through the motor's self-identification and display Eb2.
Conversely, if the correct motor is installed but the control board was programmed with an incorrect shared data set, the stored HP value will not match the actual motor. A technician must verify that both the motor HP and the memory card data are correct for the GMVC960803BN model and rectify whichever is wrong.
Common Causes
| Cause | Likelihood | DIY? |
|---|---|---|
| Wrong motor installed (incorrect horsepower for this model) | Most common | ✗ Call a pro → |
| Incorrect shared data programmed for this model | Most common | ✗ Call a pro → |
When to Call a Professional
Contact a licensed HVAC technician if:
- Eb2 is present after a motor or control board replacement — a technician must verify the correct motor HP and confirm the control board has the correct shared data set for this model
- The wrong motor was installed — replacement with the correct HP motor requires professional service
✓ Verified against manufacturer service manual — March 2026