P0945 OBD-II: Hydraulic Pump Relay Circuit/Open
P0945 Severity
Will P0945 go away on its own?
Once the vehicle's onboard system no longer detects the issue, most codes will disappear on their own. If your vehicle still has this code, however, it should be properly diagnosed to avoid a more serious problem.
For a proper diagnosis, RepairPal Certified shops have the equipment, tools, and expertise.
Moderate severity codes might not threaten the vehicle's safety or functionality immediately, but you should still get it diagnosed within a reasonable time frame to keep your car running well.
What causes OBD-II fault code P0945?
The clutch uses hydraulic pressure to engage and disengage the clutch as well as shift gears. The Transmission Control Module uses a relay to control hydraulic pump that produces the pressure in the system. If the relay does not function as requested, code P0945 is stored.
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OBD II Fault Code
- OBD II P0945
OBD-II Code Transmission may not shift properly is defined as a Hydraulic Pump Relay Circuit/Open
The clutch uses hydraulic pressure to engage and disengage the clutch as well as shift gears. The Transmission Control Module uses a relay to control hydraulic pump that produces the pressure in the system. If the relay does not function as requested, code P0945 is stored.
Transmission may not shift properly Symptoms
- Transmission may not shift properly
Common Problems That Trigger the P0945 Code
- Hydraulic pump relay failure
- Transmission Control Module (TCM) failure
- Wiring issue
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