P0947
Hydraulic Pump Relay/Control Circuit Low
What it means
P0947 means Hydraulic Pump Relay/Control Circuit Low.
Where it lives
For P0947, the circuit described runs through the relay. The description of P0947 reports a fault at the relay.
Check these first
- A short to ground in the hydraulic pump relay circuit
- A chafed pump relay control wire
- A weak battery dragging the relay circuit
- A failed pump relay coil
What to do next
- Read hydraulic pump relay voltage on a scan tool
- Test the pump relay circuit for a short to ground
- Check the battery voltage and charging
- Measure the pump relay coil resistance
- Replace the relay if the coil is shorted
- Clear the code and retest
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Updated
Generic SAE J2012 definition. Last updated 2026-10-10.