I'm Anthony Calhoun, ASE Master Tech. The power steering light gets people nervous because they think the steering is going to lock up. Let me be clear: your steering will not lock up. You'll still be able to steer — it will just be much heavier without the power assist.
Electric vs. Hydraulic — Which Do You Have?
The first thing to figure out is which type of power steering your vehicle has:
- Electric Power Steering (EPS): Most vehicles made after 2010-2015. There is no power steering fluid reservoir under the hood. An electric motor mounted on the steering column or rack provides the assist.
- Hydraulic Power Steering: Older vehicles and some trucks. There is a power steering fluid reservoir under the hood, a belt-driven pump on the engine, and hydraulic lines running to the steering rack.
The fix depends entirely on which system you have.
EPS System Causes
Torque Sensor Failure
The EPS system uses a torque sensor to measure how hard you're turning the wheel. If the sensor drifts or fails, the system doesn't know how much assist to provide and shuts down as a safety precaution. On many Toyota, Honda, and Hyundai vehicles, a torque sensor recalibration with a scan tool fixes this without replacing any parts ($80-$150).
EPS Motor Failure
The electric motor that provides steering assist can fail. This is less common but more expensive — $500-$1,200 for the motor replacement. On some vehicles (like certain Chevy Malibus and Ford Fusions), this is a known issue.
Wiring or Connector Issues
Corroded connectors or damaged wiring between the EPS motor and the control module can trigger the light. Water intrusion in the steering column area is a common cause.
Battery or Charging System
EPS systems draw significant electrical current. If the battery is weak or the alternator output is low, the EPS system may shut down to preserve electrical power for more critical systems. If the power steering light comes on with the battery light, fix the charging system first.
Hydraulic System Causes
Low Power Steering Fluid
Check the reservoir. If the fluid is low, you have a leak somewhere — the pump seal, a hose fitting, or the rack-and-pinion seals. Top it off with the correct fluid (check the cap or owner's manual) and get the leak found and fixed.
Power Steering Pump Failure
The pump is belt-driven off the engine. When the bearing fails or the internal vanes wear, you'll hear a whining or groaning noise that gets louder when you turn the wheel. The pump needs replacement — $300-$600.
Rack and Pinion Leak
The steering rack has seals at both ends where the tie rods connect. These seals wear over time and leak fluid. If the boots over the tie rod ends are swollen with fluid, the rack seals are leaking. Rack replacement runs $800-$1,800.
Can You Drive?
Yes. The steering will be heavy — especially at low speeds and when parking. At highway speed, steering effort is naturally lighter and you may not notice much difference. You can safely drive to a shop, but avoid tight parking lots and heavy traffic situations where you need to make sharp turns.
The one exception: if the steering suddenly becomes very stiff while you're driving, pull over safely and have the vehicle towed. A sudden loss of assist at speed requires more investigation before driving further. For more practical guides on vehicle systems like this, check out APEX Tech Nation's article library — written by working technicians, not content mills.
Repair Costs
| Repair | Cost Range |
|---|---|
| Torque sensor calibration (EPS) | $80-$150 |
| EPS motor replacement | $500-$1,200 |
| Power steering fluid top-off | $10-$20 (DIY) |
| Power steering pump (hydraulic) | $300-$600 |
| Power steering hose | $150-$350 |
| Rack and pinion replacement | $800-$1,800 |
Disclaimer: This guide is for educational purposes. Power steering is a safety system. Have warning lights diagnosed by a qualified technician.