P0B04
Electric/Auxiliary Transmission Fluid Pump Motor Phase V Current Low
P0B04 is an OBD-II diagnostic trouble code meaning: Electric/Auxiliary Transmission Fluid Pump Motor Phase V Current Low. Common causes: pump motor malfunction, damage to wiring or connectors. Estimated repair cost: $56–167.
Symptoms
- Uneven transmission operation
- Check Engine Light Illuminates
- Reduced shift efficiency
- Noise from transmission fluid pump
- Possible starting problems in hybrid systems
Causes
- Pump motor malfunction
- Damage to wiring or connectors
- Problems with the control module
- Short circuit in phase V circuit
- Motor brush wear
How to Fix
- Check the integrity of wiring and connectors
- Measure the resistance of the motor windings
- Check the operation of the control module
- Replace the pump motor if necessary
- Clean or replace connectors if corrosion is detected
Related codes
Error P0B04 by Vehicle Brand
FAQ
What does the P0B04 code mean?
P0B04 is an OBD-II diagnostic trouble code that indicates: Electric/Auxiliary Transmission Fluid Pump Motor Phase V Current Low
What causes a P0B04 error code?
The most common causes of P0B04 include: Pump motor malfunction; Damage to wiring or connectors; Problems with the control module; Short circuit in phase V circuit.
How do I fix a P0B04 diagnostic trouble code?
To fix P0B04: Check the integrity of wiring and connectors. Measure the resistance of the motor windings. Check the operation of the control module. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0B04?
Limited driving only, diagnose soon
How much does it cost to fix P0B04?
The estimated repair cost for P0B04 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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