P277A
Electric/Auxiliary Transmission Fluid Pump B Hydraulic Leakage
P277A is an OBD-II diagnostic trouble code meaning: Electric/Auxiliary Transmission Fluid Pump B Hydraulic Leakage. Common causes: damaged pump seals or gaskets, wear or damage to the pump itself. Estimated repair cost: $56–167.
Symptoms
- Difficulty shifting gears
- Reduced transmission performance
- Noises in the transmission area
- Dashboard warning light
- Problems starting the engine in cold weather
Causes
- Damaged pump seals or gaskets
- Wear or damage to the pump itself
- Problems with the electrical part of the pump
- Transmission fluid leak
- Damage to hydraulic lines
How to Fix
- Check the level and condition of the transmission fluid
- Inspect the pump and its seals for leaks
- Check electrical connections and wiring of the pump
- If necessary, replace the pump or its components
- After repair, check the operation of the transmission
Related codes
Error P277A by Vehicle Brand
FAQ
What does the P277A code mean?
P277A is an OBD-II diagnostic trouble code that indicates: Electric/Auxiliary Transmission Fluid Pump B Hydraulic Leakage
What causes a P277A error code?
The most common causes of P277A include: Damaged pump seals or gaskets; Wear or damage to the pump itself; Problems with the electrical part of the pump; Transmission fluid leak.
How do I fix a P277A diagnostic trouble code?
To fix P277A: Check the level and condition of the transmission fluid. Inspect the pump and its seals for leaks. Check electrical connections and wiring of the pump. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P277A?
Do not drive — repair immediately
How much does it cost to fix P277A?
The estimated repair cost for P277A is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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