Invalid Data Received From Transmission Fluid Pump Module B

Where it lives

For U058B, start at the pump the description names.

Check these first

• Low or contaminated transmission fluid starving the fluid pump module B
• Electrical noise on the data bus corrupting the transmission fluid pump module B signal
• A low battery or charging fault that browns out the transmission fluid pump module B

What to do next

1. Scan all modules and record the stored and pending network codes
2. Check the transmission fluid pump module B data bus wiring for opens, shorts, and chafing
3. Repair or replace the transmission fluid pump module B if the circuit, power, and bus tests pass
4. Clear the code and retest to confirm the transmission fluid pump module B fault is gone

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