P0946

Hydraulic Pump Relay/Control Circuit Range/Performance

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$17–89 (est.)

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

P0944 P0945 P0947