OBD-II Code U0131 — Lost Communication with Power Steering Control Module

What Does This Error Mean?

U0131 means your car's main computer has lost communication with the Electric Power Steering (EPS) control module. Modern vehicles with electric power steering use a dedicated module to control steering assist. When that module stops communicating, the car often switches to a default heavy steering mode — you can still steer, but it takes much more effort. A warning light like 'Power Steering' or 'EPAS' will usually appear on the dash. This needs attention but is not immediately dangerous as long as you're aware the steering will feel heavier.

Affected Models

All vehicles with Electric Power Steering (EPS)
Common in Ford Focus and Fiesta
Common in Chevrolet Cruze and Malibu
Common in Honda Civic and Accord (2012+)
Common in Toyota Corolla and Yaris (2010+)

Common Causes

Failed EPS control module that has dropped off the CAN network
Damaged or corroded wiring connector at the steering column where the EPS module is located
Blown fuse supplying power to the EPS module
Overheating EPS motor causing the module to temporarily shut down and trigger the code
Low battery voltage causing the EPS module to lose power during heavy electrical demand

How to Fix It

Notice what the steering feels like right now. If it's heavy but functional, drive carefully to a shop. If steering feels completely locked or unpredictable, stop driving immediately and call for a tow.

Electric power steering failure almost always leaves manual steering intact — you can still steer, it just requires more effort.
Check the EPS fuse. Locate your fuse box and look for a fuse labeled EPS, EPAS, or POWER STEER. Replace any blown fuse and test the steering. This is the simplest possible fix and worth checking first.

Some vehicles have a high-amp fuse (30-40A) for the EPS motor in addition to a smaller control fuse.
Test your battery. EPS modules are sensitive to voltage drops. If your battery is weak and dips during high electrical load (like when AC is on or at low idle), the EPS module can lose power and trigger U0131. Have the battery and alternator load-tested.

This is a very common cause of intermittent U0131 codes — a borderline battery that's dying under load.
Inspect the wiring connector at the EPS motor and control module. The EPS assembly is usually on or near the steering rack or column. Look for any connectors that have come loose, especially if the vehicle has had recent suspension or steering work.

Mechanics sometimes disturb EPS connectors when doing wheel alignments or tie rod replacements.
If cleaning and resets don't help, have a shop perform a full EPS system scan. Modern scan tools can communicate directly with the EPS module to check internal fault codes and perform recalibration. Module replacement requires a steering angle reset.

After any EPS work, a four-wheel alignment check is always recommended.

When to Call a Professional

Electric power steering involves safety-critical components. If your steering suddenly feels very heavy while driving, that's dangerous and should be addressed immediately. EPS module replacement sometimes requires a steering angle sensor relearn procedure. Expect $100-$200 for diagnosis and $300-$700 for EPS module replacement.

Frequently Asked Questions

Is it safe to drive with U0131 active?

Usually yes, with caution. The steering will be much heavier than normal but will still work. Avoid situations where quick steering responses are needed — tight parking maneuvers, emergency lane changes, or highway driving at high speeds. Get it repaired before a long trip.

Why does U0131 appear only in cold weather?

EPS modules and motors can behave differently in extreme cold. Cold thickens the grease in the steering rack, requiring more current from the EPS motor. That higher current demand can stress a marginal battery or reveal a weak fuse connection. If U0131 only appears in winter, suspect the battery or a thermal issue with the EPS motor.

My steering is fine but the light is on. Do I still need to fix U0131?

Yes — the underlying communication fault is still present even if steering feels normal right now. The system may be running in a limp-home mode that happens to feel acceptable. A proper fix prevents the code from escalating into a complete steering failure down the road. Also, a check engine or EPS warning light on the dash can mask other warning lights.