P0B01
Electric/Auxiliary Transmission Fluid Pump Motor Phase U Current Low
P0B01 is an OBD-II diagnostic trouble code meaning: Electric/Auxiliary Transmission Fluid Pump Motor Phase U Current Low. Common causes: open or short circuit in phase u circuit, pump motor malfunction. Estimated repair cost: $56–167.
Symptoms
- Check Engine light comes on
- Gear shifting problems
- Unusual noises from the transmission area
- Reduced transmission efficiency
- Transmission transition to emergency mode
Causes
- Open or short circuit in phase U circuit
- Pump motor malfunction
- Problems with the connector or wiring harness
- Transmission control module (TCM) malfunction
- Poor contact in electrical connections
How to Fix
- Check the continuity of phase U
- Check the condition of the connectors and wiring harness
- Test the pump motor
- Check the operation of the transmission control module
- Replace faulty components
Related codes
Error P0B01 by Vehicle Brand
FAQ
What does the P0B01 code mean?
P0B01 is an OBD-II diagnostic trouble code that indicates: Electric/Auxiliary Transmission Fluid Pump Motor Phase U Current Low
What causes a P0B01 error code?
The most common causes of P0B01 include: Open or short circuit in phase U circuit; Pump motor malfunction; Problems with the connector or wiring harness; Transmission control module (TCM) malfunction.
How do I fix a P0B01 diagnostic trouble code?
To fix P0B01: Check the continuity of phase U. Check the condition of the connectors and wiring harness. Test the pump motor. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0B01?
Limited driving only, diagnose soon
How much does it cost to fix P0B01?
The estimated repair cost for P0B01 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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