P28EE
Electric/Auxiliary Transmission Fluid Pump B Underspeed
P28EE is an OBD-II diagnostic trouble code meaning: Electric/Auxiliary Transmission Fluid Pump B Underspeed. Common causes: electrical transmission fluid pump malfunction, problems with pump wiring or connectors. Estimated repair cost: $56–278.
Symptoms
- Check Engine light comes on
- Delays when shifting gears
- The gearbox goes into emergency mode
- Unusual noises from the transmission area
- Reduced transmission efficiency
Causes
- Electrical transmission fluid pump malfunction
- Problems with pump wiring or connectors
- Low transmission fluid level
- Faulty pump relay or fuse
- Problems with the transmission control unit
How to Fix
- Check the level and condition of the transmission fluid
- Diagnose the electrical circuit of the pump (voltage, resistance)
- Check fuses and relays associated with the pump
- Test or replace transmission fluid pump
- If necessary, reflash or replace the transmission control unit
Related codes
Error P28EE by Vehicle Brand
FAQ
What does the P28EE code mean?
P28EE is an OBD-II diagnostic trouble code that indicates: Electric/Auxiliary Transmission Fluid Pump B Underspeed
What causes a P28EE error code?
The most common causes of P28EE include: Electrical transmission fluid pump malfunction; Problems with pump wiring or connectors; Low transmission fluid level; Faulty pump relay or fuse.
How do I fix a P28EE diagnostic trouble code?
To fix P28EE: Check the level and condition of the transmission fluid. Diagnose the electrical circuit of the pump (voltage, resistance). Check fuses and relays associated with the pump. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P28EE?
Limited driving only, diagnose soon
How much does it cost to fix P28EE?
The estimated repair cost for P28EE is $56–278. Actual cost depends on your vehicle, location, and labor rates.
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