Power steering loss makes the wheel feel heavy at low speed and is usually a fluid, belt, or pump issue on hydraulic systems, or an electrical fault on newer electric systems. Here are the most likely causes ranked by how often they turn out to be the problem.
Hydraulic systems lose fluid through tiny seal leaks. Low fluid means whining, stiff steering, and eventual pump damage.
The serpentine belt drives the power steering pump. A snapped belt kills assist instantly; a glazed belt squeals and slips under load.
Worn pump vanes or seals lose pressure. Whining at all RPMs and slow steering response are the giveaway.
Newer cars use an electric motor instead of a pump. Fault codes, dead battery, or a bad torque sensor disable assist.
A leaking rack drops fluid level and steering effort. Visible as wet boots on the steering rack inner ends.
You suddenly lose all steering assist at speed, the belt is shredding, or the steering wheel locks. Total loss of assist is harder to control - keep both hands on the wheel and pull over safely.
Tell us your symptoms and any codes you have. AmpAuto's AI cross-references NHTSA recall data, common failure patterns, and your exact year/make/model to give you the most likely cause - free, no signup.
Diagnose My Car Free →Already have a code? Skip ahead and get the answer instantly.
Yes, but the wheel will be very heavy at low speed and parking is a workout. Short distances at low speed are OK to get to a shop.
Fluid: $20-$50. Belt: $100-$250. Pump: $300-$900. Rack and pinion: $700-$2000. Electric PS module: $500-$2500.
Low fluid 9 times out of 10. Top off with the correct fluid. If whine returns, you have a leak or failing pump.
Check the cap or owners manual. Some use ATF, some use specific PS fluid. Wrong fluid can damage seals.
Only if the fluid is dark and contaminated. New fluid in a worn pump rarely cures noise but it can buy time.