Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means there is a problem with the part of the car that helps control the hydraulic pump, which is like a special pump that helps certain parts of the car move smoothly. It's like a switch isn't working right.
The P0945 code indicates an issue with the electrical circuit that controls the hydraulic pump relay, which may be open or not functioning correctly.
The hydraulic pump relay is responsible for supplying power to the hydraulic pump, which is essential for the operation of systems like the transmission or power steering. An open circuit in this relay means that the electrical path is interrupted, preventing the pump from receiving power.
• Transmission not shifting properly
• Warning light on dashboard
• Unusual noises from the hydraulic system
• Loss of power steering assist
• Faulty hydraulic pump relay
• Open or shorted wiring in the control circuit
• Blown fuse
• Corroded or damaged connectors
• Faulty control module
Hydraulic Pump: A device that moves fluid to create pressure for various systems.
Relay: An electrical switch that opens and closes under the control of another electrical circuit.
• Check for blown fuses related to the hydraulic pump relay.
• Inspect wiring and connectors for damage or corrosion.
• Test the hydraulic pump relay for proper operation.
• Check the control module for any faults.
• Replace the faulty hydraulic pump relay.
• Repair or replace damaged wiring and connectors.
• Replace any blown fuses.
• Reprogram or replace the control module if necessary.
• Multimeter
• Relay tester
• Screwdriver set
• Wire stripper/crimper
$100 - $300
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regular inspection of electrical connections.
• Timely replacement of worn-out relays.
• Routine maintenance checks for the hydraulic system.
Circuit Issue
• Do not ignore warning lights on the dashboard.
• Have the vehicle checked by a professional if you experience shifting issues.
• Regularly maintain the vehicle's electrical system.
Check with your vehicle manufacturer for warranty coverage on electrical components.
This code has been associated with vehicles experiencing intermittent transmission issues due to electrical faults.
Moderate – It should be addressed soon to prevent further issues, but it is not an immediate safety concern.
Driving with this code may lead to further vehicle damage or unsafe driving conditions.
• Vehicle in park with engine running
• Transmission fluid at operating temperature
The hydraulic pump relay is typically located in the vehicle's fuse box or relay panel, often under the hood or near the dashboard.
Q: Can I drive with a P0945 code?
A: It's not recommended to drive for long periods with this code, as it may lead to further damage or unsafe driving conditions.
Q: How do I reset the P0945 code?
A: After repairs, the code can be reset using an OBD-II scanner, but ensure the issue is resolved first.
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