EPS Electric Power Steering Fault UK — C1095, C1288 & More Explained
EPS Electric Power Steering Fault — C1095, C1288, U0131 & More: What's Going On and How We Fix It
Your steering wheel suddenly feels like you're wrestling a lorry. A yellow or red EPS warning light has appeared on the dashboard, possibly alongside a "Power Steering Fault — Service Required" message. The car may have gone into a reduced-assistance or no-assistance mode. Sound familiar? You're not alone — electric power steering faults are one of the most common electronic complaints we see at The Vehicle Check, and the good news is that in the vast majority of cases the fault is in the EPS control module, not the entire steering rack. That means it's repairable — quickly, and for a fraction of what a dealer wants to charge.
What Is the EPS System and Why Does the Control Module Matter?
Electric power steering replaces the old hydraulic pump with an electric motor mounted on the steering column or rack. A dedicated EPS control module (EPSCM) — sometimes called the Power Steering Control Module (PSCM) — reads inputs from the torque sensor (which detects how hard you're turning), the vehicle speed, and the steering angle sensor, then decides exactly how much assistance the electric motor applies. When that module develops a fault, the whole system defaults to fail-safe: steering assistance cuts out to prevent erratic behaviour, and a fault code is logged.
What Are the Most Common EPS Fault Codes?
Several specific diagnostic trouble codes (DTCs) are associated with EPS failures. Here are the ones we diagnose most regularly:
- C1095 — EPS motor circuit failure. The module cannot properly drive or read the assist motor. Often caused by a failed H-bridge driver stage inside the module itself.
- C1288 — Torque sensor rationality fault. The two torque sensor signals don't agree within an acceptable threshold. Can be an internal module ADC fault rather than a failed sensor.
- C1296 — Steering angle sensor fault or implausible signal. May appear alongside C1288 in a cascading fault scenario.
- U0131 — Lost communication with the Power Steering Control Module. The module has stopped responding on the CAN bus — often a sign of a failed internal processor or power supply fault within the module.
- C1900 — Motor position sensor error. Common on column-assist EPS units where the resolver or Hall-effect sensor circuitry on the module board has degraded.
- C00046 / C0046 — Seen frequently on Vauxhall Astra J, Corsa D/E and Insignia; relates to EPS torque sensor or motor control failure.
- P0A78 — On some hybrid platforms (Ford C-Max, Kuga hybrid) this can accompany EPS issues when the high-voltage assist system is involved.
Different manufacturers use slightly different code numbering, but the underlying failure modes are consistent: internal MOSFET/driver failure, corrupted firmware calibration data, degraded torque sensor interface circuitry, or power supply collapse inside the module.
Which Vehicles Are Affected by EPS Module Faults?
Electric power steering modules fail across a remarkably wide range of vehicles. In our workshop in 2026 we're regularly seeing:
- Ford — Fiesta Mk6/Mk7/Mk8, Focus Mk2/Mk3/Mk4, C-Max, Kuga, S-Max, Mondeo Mk4/Mk5, Transit Connect, EcoSport — PSCM faults are extremely common, often storing C1095 or U0131.
- Vauxhall / Opel — Corsa C/D/E, Astra H/J/K, Insignia A/B, Zafira B/C — C00046 and torque sensor codes are endemic.
- Renault — Clio III/IV, Megane II/III/IV, Scenic, Kangoo — EPS column units with failing driver boards.
- Volkswagen / Audi / Seat / Skoda — Golf Mk5/Mk6/Mk7, Polo, Fabia, Ibiza, A3, A4 — particularly the column-mounted EPS on older platforms.
- Hyundai / Kia — i20, i30, Tucson, Sportage — known for torque sensor interface failures in the EPSCM.
- Nissan / Toyota — Qashqai, Juke, Yaris, Auris — EPS module and calibration issues after battery disconnection or failed updates.
- BMW / Mini — E-series and F-series models with column EPS, Mini R56/R60 — internal processor and power supply faults.
If your vehicle isn't listed, call us on 0203 489 2610 — chances are we've seen it.
What Actually Fails Inside the EPS Module?
Based on the hundreds of EPS modules we've repaired, the root causes break down into a few clear categories:
- Failed H-bridge / MOSFET driver stage — The transistors that actually switch current through the assist motor degrade and fail, often producing C1095. Heat cycling over years of use is the primary culprit.
- Corrupted internal calibration / firmware — Some EPS modules store torque sensor offset calibration data in non-volatile memory. Voltage spikes from a failed battery, jump-starting, or a workshop error can corrupt this data, causing the module to produce implausible readings (C1288, C1296).
- CAN transceiver failure — The module's CAN bus interface chip fails, resulting in U0131 on every module that communicates with it. The ECU, ABS and instrument cluster all log communication faults as a secondary result.
- Power supply collapse — An internal voltage regulator or capacitor array fails, causing the module processor to reset repeatedly or not power up at all.
- Torque sensor interface degradation — The analogue front-end circuitry that reads the torque sensor signals drifts out of spec, causing C1288 rationality faults even when the physical sensor is fine.
The important thing to understand is that none of these faults requires replacing the entire EPS rack or column. The motor, the shaft, the physical steering components — they're almost always completely fine. It's a circuit board repair job, not a mechanical one.
Why Does a Dealer Want to Replace the Whole Rack?
Franchised dealers work from manufacturer labour guides and approved parts catalogues. In most cases the only approved fix is a complete EPS rack or column assembly replacement — a unit that retails at £600 to £1,800 depending on the vehicle, plus two to four hours of fitting labour. It's not that the service advisor is trying to rip you off; it's that the dealer network simply isn't set up for component-level electronics repair. We are.
Independent garages using pattern or used parts will typically charge £250–£600 fitted — still considerably more than a module repair, and with a used unit you're inheriting whatever hours and heat cycles the previous owner put on it.
TVC's EPS module repair starts from £89 including return postage. Your original module comes back. Your vehicle's calibration data stays intact. Plug it back in and drive away.
For context on how we approach complex electronic repairs across the board, see our ECU repair service — the same philosophy applies: fix the original unit, preserve the data, save the customer serious money.
How Does the TVC EPS Repair Process Work?
It's straightforward, and we've designed it to be as painless as possible for people who've never posted a car part before:
- Contact us first — Call 0203 489 2610 or use our contact page to describe your fault codes and vehicle. We'll confirm the module is repairable before you do anything.
- Remove the EPS module — For most vehicles this takes 20–40 minutes with basic tools. We can talk you through it, or your local garage can do it for a small labour charge — still far cheaper than a full replacement.
- Post it to us — Wrap it well and send it to: Office 13, 25 Mollison Avenue, Enfield, EN3 7NJ. We recommend Royal Mail Tracked 48 or a courier service with tracking.
- We diagnose and repair — On the bench we carry out full electronic diagnosis, identify the root cause, carry out component-level repair, then run the module through a comprehensive functional test sequence before it goes anywhere near a box.
- Back with you in 24–48 hours — We return the module by tracked courier. Refit it, clear any stored codes with a basic OBD reader, and you're done.
Local to Enfield? You're within our 60-mile drive-in radius — bring the car in and we can handle it directly. Check our mail-in repair service page for full posting guidance wherever you are in the UK.
Does an EPS Repair Affect Other Modules or Require Coding?
In most cases, no. The EPS module holds its own calibration internally and doesn't require re-coding to the vehicle after a repair — you simply refit, clear stored fault codes, and the system initialises normally on first drive. On some platforms (certain Ford PSCM units, some VW-group vehicles) a torque sensor relearn procedure is required after refitting, which can be done with a mid-range diagnostic tool or at any garage with dealer-level software. We'll tell you exactly what's needed for your specific vehicle before we return the unit.
If you've also had related ABS or stability control faults triggered by the EPS failure — a common secondary effect because the systems share CAN data — take a look at our ABS module repair service. We can diagnose both in the same job if needed.
Why Trust The Vehicle Check With Your EPS Module?
We're a specialist automotive electronics workshop, not a general garage that occasionally looks at electronics on the side. The team at TVC has been repairing vehicle control modules at component level for over a decade, working across Ford, Vauxhall, Renault, VW Group, BMW, Hyundai, Kia, Nissan, Toyota and many more. We repair EPS modules, ABS modules, airbag control units, BCM/BSI units, DSG mechatronics, and ECUs — all at component level, all with a full warranty on the repair. When the fault turns out to be hardware beyond economic repair, we tell you before we charge you anything — no surprises, ever.
We're based at Office 13, 25 Mollison Avenue, Enfield, EN3 7NJ, and serve customers nationwide through our mail-in service. Our reviews speak for themselves, but if you want to talk through your specific fault before committing to anything, just call us on 0203 489 2610. We'd rather spend five minutes on the phone making sure we're the right fix for your problem than have you post something we can't help with.