P0945 Code - Hydraulic Pump Relay Circuit/Open
Quick Answer
The OBD-II trouble code P0945 indicates a problem with the hydraulic pump relay circuit being open. Common causes include Faulty hydraulic pump relay, Damaged wiring or connectors in the relay circuit, Corrosion or poor connections in the relay circuit. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P0945 indicates Hydraulic Pump Relay Circuit/Open.
- Common causes
- Common causes include Faulty hydraulic pump relay, Damaged wiring or connectors in the relay circuit, Corrosion or poor connections in the relay circuit.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code P0945 Description
The OBD-II trouble code P0945 indicates a problem with the hydraulic pump relay circuit being open. This code is typically found in vehicles equipped with automatic transmissions that utilize a hydraulic pump to generate pressure for shifting gears. The hydraulic pump relay is responsible for controlling the operation of the pump, ensuring that the transmission functions properly.
Common Causes of P0945
- Faulty hydraulic pump relay
- Damaged wiring or connectors in the relay circuit
- Corrosion or poor connections in the relay circuit
- Issues with the PCM
- Electrical system malfunctions
Symptoms of P0945
- Difficulty shifting gears or delayed shifting
- Transmission slipping or jerking
- Illumination of the Check Engine Light
- Reduced fuel efficiency
- Transmission overheating
How to Fix P0945
- Begin by diagnosing the root cause of the issue using a scan tool to retrieve the trouble code and pinpoint the problem area.
- Inspect the hydraulic pump relay and its connections for any signs of damage, corrosion, or loose connections. Replace the relay if necessary.
- Check the wiring harness and connectors in the relay circuit for any faults or damage. Repair or replace as needed.
- Clear the trouble code from the PCM memory and test drive the vehicle to ensure the issue has been resolved.
- If the problem persists, further diagnostic testing may be required to identify any underlying issues with the transmission system.
Cost to Fix P0945
The cost of repairing a hydraulic pump relay circuit/open issue can vary depending on the specific cause of the problem and the labor rates in your area. On average, you can expect to pay anywhere from $150 to $300 for parts and labor. Keep in mind that rates at auto repair shops can fluctuate based on location, vehicle make and model, and the expertise of the technicians. It's recommended to obtain quotes from multiple shops to ensure you receive a fair price for the repair.
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Code P0945 Information for Specific Makes
- P0945 Dodge — Hydraulic Pump Relay Circuit/Open
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