Electric Power Steering (EPS) is a key system in modern vehicles. When the C1513 code appears, it indicates a malfunction in the torque sensor or the electric steering motor. This can be an expensive problem at a garage (€500 to €1500), so here’s how to fix it yourself.
🔍 Common Symptoms
- Heavy steering or sudden changes in steering effort.
- Power steering warning light on (yellow steering wheel icon).
- Error messages such as “Power steering failure“.
- Abnormal knocking sounds from the steering wheel (seized electric motor).
🚗 Most Affected Vehicles
- Renault Mégane IV, Scénic III (common torque sensor issue).
- Peugeot 308 II, 3008 II (faulty power steering motor).
- Citroën C4 Picasso and other models with electric power steering.
🛠️ Step-by-Step Diagnosis
1. Reading the C1513 Code with an OBD2 Scanner
- Confirm it is indeed C1513 (“Torque setpoint fault – Steering sensor“).
- Recommended tools: Autel MaxiCOM, Launch X431 (for live data access).
2. Checking the Torque Sensor
- Electrical test: Measure the sensor’s voltage (typically between 0.5V and 4.5V) with a multimeter.
- Signs of failure: Inconsistent values or no signal.
- Solution: Replace the sensor (€70 to €200 depending on the model).
3. Inspecting the Electric Steering Motor
- Remove the motor (located under the steering wheel or steering column).
- Check the motor brushes (excessive wear) and for rust (a cause of seizing).
- Test the motor off-circuit with a 12V power supply.
4. Checking the CAN Bus Network
- Faulty communication between the ECU and the EPS module can trigger C1513.
- Use an oscilloscope to analyze CAN signals (e.g., interference spikes).
5. Checking Connectors and Wiring
- Inspect the wires between the torque sensor and the ECU (breaks, oxidation).
- Clean connectors with contact spray (e.g., Kontakt 60).
💡 Cost-Effective Repair Solutions
1. Replacing the Torque Sensor
- Part: Around €80 for a Renault Mégane IV (OEM like Febi Bilstein or Bosch).
- Tutorial:
- Remove the steering wheel and airbag (disconnect the battery first).
- Replace the sensor integrated into the steering column.
- Reprogram the system with a compatible OBD2 tool (e.g., Diagbox for Peugeot/Citroën).
2. Repairing the Electric Motor
- Cleaning the brushes: If wear is minimal, sand them with fine abrasive paper.
- Replacing the motor: Expect €200 to €500 for a reconditioned used motor.
3. Buying a Used EPS Module
- Price: Around €300 on platforms like eBay or Oscaro.
- Note: Check compatibility with your VIN before purchasing.
⚠️ Mistakes to Avoid
- Skipping recalibration: After replacement, the power steering must be recalibrated via OBD2.
- Forcing the steering wheel: Risk of damaging the electric motor if the system is seized.
📊 Cost Comparison
| Solution | DIY Cost | Garage Cost |
|---|---|---|
| New torque sensor | €80 – €200 | €400 – €800 |
| Reconditioned EPS motor | €200 – €500 | €800 – €1500 |
🛑 Practical Cases
- Renault Mégane IV 2017: C1513 code resolved by cleaning the oxidized connectors of the torque sensor.
- Peugeot 308 II 2019: EPS motor replaced after detecting worn brushes.
❓ FAQ
- “Can I drive with a C1513 code?”
Risk: Very heavy steering → dangerous in the city. Avoid long trips. - “Is it necessary to reprogram the system after repair?”
Yes, otherwise the warning light will stay on and the assistance may be ineffective. - “Where to buy reliable parts?”
Recommended sites: Oscaro, AutoDoc, Amazon (certified sellers).
🔧 Recommended Tools
- OBD2 Scanner: Autel MaxiCOM MK808 (for recalibration).
- Tools: Multimeter, Torx T20/T20 keys, airbag removal tool.