OBD-II Chassis Error Code C0900: How to Fix It

Q: Can I drive with error code C0900?

You should avoid driving with C0900 as it indicates a power steering fault. While the vehicle may still be steerable, it will require much more effort and could be dangerous, especially at low speeds or when parking.

Q: What causes EPS torque sensor failure?

Common causes include normal wear and tear, moisture intrusion into electrical connections, damaged wiring from road debris, or internal sensor component failure. Age and high mileage are also contributing factors.

Q: How much does it cost to fix C0900?

Repair costs vary widely from $100-200 for simple wiring repairs to $800-1500 for torque sensor replacement, depending on your vehicle's make and model. Labor costs are significant due to steering column access requirements.

Q: Will C0900 cause my car to fail inspection?

Yes, in most states a C0900 error code will cause your vehicle to fail emissions or safety inspection since it affects a critical safety system. The code must be resolved and cleared before passing inspection.

Q: Can low battery voltage trigger C0900?

Yes, insufficient battery voltage can cause false C0900 codes. Always ensure your battery is fully charged and connections are clean before diagnosing EPS issues. A weak battery should be tested and replaced if necessary.

Abstract

Error code C0900 indicates a fault with your vehicle's Electric Power Steering (EPS) torque sensor, which measures how much force you're applying to the steering wheel. When this sensor fails, you may experience heavy steering, warning lights, or complete loss of power steering assistance.