P27A4
Electric/Auxiliary Transmission Fluid Pump B Control Circuit Low
P27A4 is an OBD-II diagnostic trouble code meaning: Electric/Auxiliary Transmission Fluid Pump B Control Circuit Low. Common causes: auxiliary transmission fluid pump b malfunction, open or short circuit in control circuit. Estimated repair cost: $56–167.
Symptoms
- Check engine light comes on
- Deterioration of gear shifting
- Reduced transmission efficiency
- Possible noise from the pump
- Limitation of transmission functionality
Causes
- Auxiliary transmission fluid pump B malfunction
- Open or short circuit in control circuit
- Poor contact in pump connectors
- Faulty relay or fuse
- Problems with the transmission control unit
How to Fix
- Check the condition of fuses and relays
- Inspect the wiring harness and pump connectors for damage.
- Check the resistance and functionality of the pump
- Scan the control unit for additional errors
- If necessary, replace the pump or repair the wiring
Related codes
Error P27A4 by Vehicle Brand
FAQ
What does the P27A4 code mean?
P27A4 is an OBD-II diagnostic trouble code that indicates: Electric/Auxiliary Transmission Fluid Pump B Control Circuit Low
What causes a P27A4 error code?
The most common causes of P27A4 include: Auxiliary transmission fluid pump B malfunction; Open or short circuit in control circuit; Poor contact in pump connectors; Faulty relay or fuse.
How do I fix a P27A4 diagnostic trouble code?
To fix P27A4: Check the condition of fuses and relays. Inspect the wiring harness and pump connectors for damage.. Check the resistance and functionality of the pump. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P27A4?
Yes, but get it checked soon
How much does it cost to fix P27A4?
The estimated repair cost for P27A4 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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