P0946
Hydraulic Pump Relay/Control Circuit Range/Performance
P0946 is an OBD-II diagnostic trouble code meaning: Hydraulic Pump Relay/Control Circuit Range/Performance. Common causes: faulty hydraulic pump relay, wiring harness damage. Estimated repair cost: $17–89.
Symptoms
- Increased effort when turning the steering wheel
- Gear shifting problems (for automatic transmissions)
- Check Engine Light Is On
- Unstable operation of hydraulic systems
- Noise from hydraulic pump
Causes
- Faulty hydraulic pump relay
- Wiring harness damage
- Oxidized or corroded contacts
- Problems with the control unit
- Hydraulic pump malfunction
How to Fix
- Check the condition of the hydraulic pump relay
- Inspect the wiring harness for damage
- Clean control circuit contacts
- Test the operation of the hydraulic pump
- If necessary, replace the relay or pump
Related codes
Error P0946 by Vehicle Brand
FAQ
What does the P0946 code mean?
P0946 is an OBD-II diagnostic trouble code that indicates: Hydraulic Pump Relay/Control Circuit Range/Performance
What causes a P0946 error code?
The most common causes of P0946 include: Faulty hydraulic pump relay; Wiring harness damage; Oxidized or corroded contacts; Problems with the control unit.
How do I fix a P0946 diagnostic trouble code?
To fix P0946: Check the condition of the hydraulic pump relay. Inspect the wiring harness for damage. Clean control circuit contacts. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0946?
Limited driving only, diagnose soon
How much does it cost to fix P0946?
The estimated repair cost for P0946 is $17–89. Actual cost depends on your vehicle, location, and labor rates.
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