Electric/Auxiliary Transmission Fluid Pump A Control Circuit High

Where it lives

For P2799, the pump sits on the circuit this code reports. The description of P2799 reports a fault at the pump.

Check these first

• A short to voltage in the auxiliary transmission fluid pump A control circuit
• High resistance in the auxiliary transmission fluid pump A control circuit
• A failed auxiliary transmission fluid pump A
• A failed driver in the transmission control module

What to do next

1. Read auxiliary transmission fluid pump A status on a scan tool
2. Command auxiliary transmission fluid pump A on and off
3. Test the auxiliary transmission fluid pump A control circuit for a short to voltage
4. Measure auxiliary transmission fluid pump A motor resistance
5. Replace the auxiliary transmission fluid pump A if the circuit tests good
6. Clear the code and retest

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