Electronic Power Steering Torque Sensor Circuit Malfunction
What does C0247 mean?
The C0247 code means the vehicle's onboard diagnostic system has detected: Electronic Power Steering Torque Sensor Circuit Malfunction. This is a critical severity code.
Common Symptoms
- Power steering warning light on
- Steering assist disabled
- Steering feels heavy at all speeds
- Intermittent loss of power steering
- Steering may jerk or feel uneven
Probable Causes (Ranked by Likelihood)
- Failed EPS torque sensor Very High
- Torque sensor connector corrosion or loose connection High
- Damaged wiring between torque sensor and EPS module Moderate
- Steering column intermediate shaft binding Moderate
- EPS control module input circuit failure Low
Step-by-Step Diagnostic Procedure
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Scan for DTCs and check torque sensor live data while turning the steering wheel
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Inspect the torque sensor connector -- usually located on the steering column or rack
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Verify torque sensor signal changes smoothly when steering wheel is turned
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Check for binding in the steering column or intermediate shaft
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Test torque sensor signal voltage against manufacturer specifications
Frequently Asked Questions
What does the EPS torque sensor do?
The torque sensor measures how much force the driver applies to the steering wheel. The EPS module uses this information to determine how much electric motor assist to provide. Without it, the system cannot safely assist.
Why does the EPS disable completely with a torque sensor fault?
Safety. If the module cannot accurately measure driver input, providing power assist could be dangerous -- it might assist in the wrong direction or with the wrong force. Disabling is the safe default.
Can the torque sensor be replaced separately?
On some vehicles the torque sensor is integrated into the steering column assembly or rack and cannot be replaced individually. On others, it is a separate component. Check your vehicle's parts availability.