FAQ
TL;DR: Intermittent EPS loss on a 2011 C3 Picasso often traces to a blown relay or failed module; repair/regeneration ran PLN 600, and “You put on 2 screws, 3 plugs and a hula.” [Elektroda, blankchoice, post #20219312]
Why it matters: This FAQ helps C3 Picasso owners quickly diagnose and fix sudden "Fault steering" cutouts with practical, verified steps.
Quick Facts
- Typical repair path: send EPS module for regeneration; reported cost PLN 600 with programming and warranty. [Elektroda, blankchoice, post #20219312]
- Symptom pattern: “Fault steering” message with assistance cutting in and out; temporary after restart or short stop. [Elektroda, Pawelamelk, post #16681168]
- Confirmed cause example: blown relay inside the engine compartment module. [Elektroda, blankchoice, post #20130830]
- Access note: EPS hardware sits low, under the engine beam/subframe; space is tight. [Elektroda, Anonymous, post #16682976]
- If diagnostics cannot read the EPS, verify power, BSM fuses, and CAN line first. [Elektroda, Anonymous, post #16682976]
What causes the Citroen C3 Picasso “Fault steering” to appear and the assist to drop out?
One confirmed root cause is a blown relay in the engine module feeding the EPS. When the relay fails, the steering assist cuts intermittently or drops out entirely. Addressing the relay or refurbishing the module restores consistent power to the EPS system. [Elektroda, blankchoice, post #20130830]
My scan tool can’t talk to the EPS—where do I start?
Start with basics: verify the EPS controller has power, check the BSM fuses, and confirm CAN bus continuity. If the controller is unpowered or off the CAN, diagnostics will fail. Restore power or network first, then rescan for codes. [Elektroda, Anonymous, post #16682976]
Where is the EPS module located on the C3 Picasso?
Owners report the steering assist hardware mounted low, under the engine beam/subframe, with tight access from below. Expect heat shields and pipes nearby to constrain removal paths. Plan for under-car access and proper safety stands before attempting removal. [Elektroda, Anonymous, post #16682976]
Can moisture or rain cause intermittent EPS faults?
Yes. Users observed symptoms after rain, suggesting moisture intrusion can aggravate connections or the module. Drying and resealing help only if the underlying electrical fault is mild. Severe moisture damage requires repair or regeneration. [Elektroda, Pawelamelk, post #16681754]
I replaced a fuse and the EPS worked, but failed again days later—why?
Fuse replacement can temporarily mask an upstream problem. One owner saw the failure return after five days. The true cause often lies in a failing relay, poor power feed, or a compromised module that needs regeneration. [Elektroda, Pawelamelk, post #16681168]
What is the CAN bus in this context?
The CAN bus is the vehicle’s data network linking controllers, including the EPS. If the EPS loses CAN connectivity or power, scan tools cannot communicate. Restoring power and network integrity is mandatory before fault reading. [Elektroda, Anonymous, post #16682976]
How much does EPS module regeneration cost and what’s included?
One documented service cost PLN 600. It included repair, testing, fresh programming, and a warranty. The owner reinstalled it using two screws and three connectors with quick results. “Programmed from scratch and with a guarantee.” [Elektroda, blankchoice, post #20219312]
How do I remove the EPS module without dropping the subframe?
- Unscrew the module from below; access is tight.
- Slightly bend the exhaust heat shield and lever the adjacent pipe aside.
- Withdraw the unit carefully and disconnect the three plugs.
Two shops claimed the engine had to come out; it didn’t. [Elektroda, blankchoice, post #20503671]
Do I need programming after the module is repaired?
Yes. The successful repair case included full reprogramming before return. After refit, the system worked immediately and carried a warranty. This avoids mismatch or coding issues after installation. [Elektroda, blankchoice, post #20219312]
My mechanic’s computer can’t see the EPS. Could the tool be the issue?
Possibly. One reply advised switching testers when the EPS wouldn’t respond. Use a PSA-capable scanner after confirming power and CAN. Tool compatibility affects access to steering and BSI functions. [Elektroda, andrzej20001, post #16682679]
Can I still drive if the electric power steering fails mid‑trip?
Yes, but steering effort increases sharply. An owner continued briefly after assist cutout, then stopped and restarted to restore assist. Drive only to a safe place and fix the root cause promptly. [Elektroda, Pawelamelk, post #16681168]
What early symptoms point to a coming EPS failure?
Watch for the “Fault steering” message, assist cutting out after short drives, and temporary recovery after key-off. Recurrence within days signals a deeper power or module issue rather than a simple fuse. [Elektroda, Pawelamelk, post #16681168]
Is relay replacement a DIY job, or should I send the module out?
A user had the module regenerated by a specialist with testing and coding included. That path avoids micro-soldering or relay spec pitfalls. "Repaired, checked, programmed from scratch and with a guarantee." [Elektroda, blankchoice, post #20219312]
Edge case: Why does my scanner show nothing even though the car drives?
If the EPS controller lacks power, it won’t talk on CAN, yet the car can still move without assist. Restore EPS power feed or BSM fuse integrity, then scan again for fault codes. [Elektroda, Anonymous, post #16682976]
