Electric/Auxiliary Transmission Fluid Pump Motor Phase W Current Low

Where it lives

For P0B07, start at the pump the description names.

Check these first

• Low transmission fluid level
• A failed auxiliary transmission fluid pump motor
• A short or open in the phase W motor wiring
• A blocked transmission fluid filter or line

What to do next

1. Read the transmission fluid pump phase W current on a scan tool
2. Check the transmission fluid level and condition
3. Measure the phase W winding resistance
4. Inspect the fluid filter and lines for a blockage
5. Replace the pump motor if the windings test good
6. Clear the code and retest

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