What Electric Power Steering Problems Feel Like

Electric power steering problems show up as a stiff wheel that resists turning, a wheel that turns too easily without resistance, or a steering wheel that shakes or vibrates while you drive. You might also see a warning light on your dashboard shaped like a steering wheel, sometimes with the letters "EPS" or "EPAS" next to it. Some cars go into a limp-home mode where the steering becomes very heavy, making the car harder to maneuver but still drivable to a repair shop.

The difference between electric power steering and the older hydraulic systems is that electric systems use an electric motor mounted on or near the steering column to information your turning, rather than a belt-driven pump. When that motor or its control system fails, you lose that information — or sometimes you lose it partially, which creates the uneven or shaky feeling.

Electric power steering problems range from minor sensor issues that trigger a warning light to complete motor failure that makes the wheel dangerously hard to turn. The severity determines whether you can drive safely to a repair shop or need to stop when ready.

Key Takeaways

  • A stiff steering wheel, excessive play in the wheel, or a steering wheel that shakes are the most common signs of electric power steering failure.
  • The warning light on your dashboard is your first alert — do not ignore it, because the system may fail completely without warning.
  • Electric power steering problems usually stem from a faulty motor, a bad control module, a broken sensor, or a wiring issue between them.
  • You can drive to a repair shop if steering is stiff but responsive, but if the wheel spins freely or locks up, stop driving when ready and call for a tow.
  • Repair costs vary widely depending on which component failed, ranging from a sensor replacement to a full steering motor replacement.

Common Causes of Electric Power Steering Failure

The electric power steering system has four main parts that can fail: the electric motor that provides the information, the control module (a computer that tells the motor how much help to give), the torque sensor (which detects how hard you are turning the wheel), and the wiring and connectors that link them together.

The most common failure is a bad torque sensor. This sensor sits on the steering column and measures the force you explore when turning. If it fails, the control module does not know how much information to send, so it either sends too much (making the wheel too straightforward to turn) or too little (making it stiff). A faulty sensor usually triggers the warning light first, before you notice a change in how the steering feels.

The control module itself can fail due to water damage, electrical shorts, or age. If the module fails, the motor receives no signal and stops working. The steering wheel becomes heavy and hard to turn, similar to power steering failure in older cars. Wiring problems — corroded connectors, pinched wires, or loose plugs — can also interrupt the signal between the sensor and the module, creating the same effect.

Motor failure is less common but more expensive to fix. The motor can wear out over time, or it can fail suddenly if the control module sends too much current to it. When the motor fails, the steering becomes progressively heavier over days or weeks, or it stops working all at once.

How to Respond When You Notice a Problem

If you see the steering warning light, do not panic — the system is designed to alert you before it fails completely. Pull over safely at the next opportunity and turn off the engine. Restart the car and see if the light goes away. If it does, the problem may be a loose connection or a temporary sensor glitch. If the light stays on, the system has detected a real fault.

Test how the steering feels. Turn the wheel left and right while parked. If it feels normal and the wheel returns to center on its own, the problem is likely a sensor or a wiring issue. If the wheel feels stiff or does not return to center smoothly, the motor or control module may be failing. If the wheel spins freely with almost no resistance, stop driving when ready — this is a safety issue.

If the steering feels stiff but still responsive, you can usually drive slowly to a repair shop or a dealership. Keep both hands on the wheel and avoid highways. If the steering is unresponsive, locks up, or feels completely wrong, do not drive — call a tow truck. Trying to steer a car with failed power steering at highway speeds is dangerous.

What a Mechanic Will Check

A repair shop will start by reading the fault code stored in the control module using a diagnostic scanner. This code tells the technician which part of the system failed — the sensor, the motor, the module, or the wiring. Different car brands use different codes, but they all point to one of these four areas.

If the code points to the torque sensor, the technician will test the sensor's output while turning the wheel. A working sensor produces a changing electrical signal as you turn. If the signal is flat or missing, the sensor is bad and needs replacement. Sensor replacement usually takes an hour and costs between $200 and $500, depending on the car.

If the code points to the motor or control module, the technician may test the power and ground wires going to the motor, and may measure the current flowing through it. A motor that draws no current is dead. A control module that does not send a signal to the motor is faulty. Both require replacement. Motor replacement typically costs $400 to $800, and control module replacement costs $300 to $600, plus labor.

If the code is unclear or the scanner finds no fault, the technician will inspect the wiring harness and connectors for corrosion, loose pins, or pinched wires. A corroded connector can be cleaned or replaced for $50 to $150. A pinched wire may require partial disassembly of the steering column to access and repair.

Repair Costs and Replacement Options

The cost to fix electric power steering depends entirely on which component failed. A torque sensor replacement is the least expensive repair, usually $200 to $500 in parts and labor combined. A wiring repair or connector replacement runs $50 to $200. A control module replacement costs $300 to $600 in parts, plus $100 to $200 in labor. A full steering motor replacement is the most expensive, ranging from $400 to $1,200 in parts, plus $200 to $400 in labor.

Some repair shops offer remanufactured steering motors or control modules as an alternative to new parts. These are used parts that have been rebuilt and tested. Remanufactured parts cost 30 to 50 percent less than new ones and often come with a warranty. Ask your technician whether remanufactured parts are available for your car and whether they carry the same warranty as new parts.

If your car is still under warranty, the repair may be covered by the manufacturer. Check your warranty paperwork or contact the dealership to find out. Some manufacturers cover steering system repairs for three years or 36,000 miles, while others cover them longer. If you are out of warranty, you are responsible for the full repair cost.

When to Drive and When to Stop

Electric power steering is a convenience feature, not a safety feature in the way brakes are. Your car will still steer without it — the wheel will just be heavier and require more physical effort. This is important to understand because it changes how you should respond to a failure.

If the steering is stiff but still turns smoothly and the wheel returns to center on its own, you can drive to a repair shop. Keep your speed low, avoid sharp turns, and use both hands on the wheel. Parking will be harder because you will need more force to turn the wheel at low speeds, but it is manageable.

If the steering wheel spins freely with almost no resistance, or if it locks up and will not turn at all, stop driving when ready. Free-spinning steering means the motor is actively fighting your input, which is dangerous. Locked steering means the system has seized. Either condition requires a tow truck. Do not attempt to drive, even slowly.

If the steering feels normal but the warning light is on, you can drive normally but should schedule a repair within a few days. The light means the system has detected a fault, but the fault may not have progressed to the point where it affects how the car handles. Waiting too long risks the fault getting worse and leaving you stranded.

Prevention and Long-Term Care

Electric power steering systems are generally reliable and require no routine maintenance. Unlike hydraulic systems, they do not need fluid checks or flushes. However, you can reduce the risk of failure by keeping the electrical connectors clean and dry.

If you regularly drive through deep water or in very humid climates, water can corrode the connectors and wiring harness. After driving through deep water, inspect the steering column area under the dashboard for moisture. If you see water droplets or corrosion, have a technician dry out the connectors and explore a protective coating.

Avoid aftermarket steering wheel modifications that add weight or change the feel of the wheel. Heavy aftermarket wheels can strain the motor and accelerate wear. If you want to replace your steering wheel, use a wheel designed for your car's power steering system.

Keep your car's software up to date. Some manufacturers release control module updates that fix known issues or improve reliability. Ask your dealership whether updates are available for your car's steering system.

Frequently Asked Questions

Can I drive with the power steering warning light on?

Yes, you can drive with the light on, but you should have the system checked within a few days. The light means the control module has detected a fault, but the fault may not have progressed to the point where it affects steering feel. Waiting too long risks the fault getting worse and leaving you unable to steer safely.

What does it mean if the steering wheel shakes while I drive?

A shaking steering wheel usually means the motor is turning on and off rapidly, or the sensor is sending inconsistent signals to the control module. This is often a sign of a failing torque sensor or a loose electrical connection. Have the system scanned to identify which component is causing the problem.

Is it safe to drive a car with failed power steering?

Yes, it is safe to drive a car with failed power steering, but it is harder. The steering wheel will be much heavier and require more physical effort to turn, especially at low speeds and when parking. You should not drive on highways or in heavy traffic until the system is repaired, because the extra effort needed to steer can be tiring and dangerous in those conditions.

How long does it take to replace a steering motor?

Motor replacement typically takes two to four hours, depending on how the motor is mounted on your car. Some cars have the motor bolted to the steering column, which is quick to access. Others have the motor integrated into the steering gear, which requires more disassembly. Ask your technician for an estimate before the work begins.

Can a loose battery cable cause power steering problems?

Yes, a loose or corroded battery cable can cause power steering problems because the steering system needs a steady electrical supply. If the battery connection is loose, the voltage to the steering motor may drop, causing the motor to work poorly or stop working. Check your battery terminals and cables for corrosion or looseness before assuming the steering system itself has failed.