C1B24

Code

Generic C — Chassis

Steering Column Torque Sensor 2 Circuit Malfunction

Brand: Generic

Type: C — Chassis

Views: UK: 9 EN: 16 RU: 7

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Steering assist reduced, variable, or disabled (heavier steering)
Steering or EPS warning lamp illuminated
Stability/traction control warning lamp may also be on
Reduced vehicle stability or altered steering feel
Fault stored in module and may be intermittent depending on steering position or temperature
Possible requests for sensor recalibration or steering angle recalibration

Read diagnostic trouble codes and freeze frame data with a professional scan tool; note related codes
Check for software/TSB bulletins and required calibrations/relearns
Visually inspect wiring and connectors at the steering column, clock spring and control module
Check connector pins for corrosion, bent pins, or pushed‑out pins
Backprobe sensor connector and measure reference voltage, ground, and signal with ignition ON while monitoring live data
Wiggle harness/clock spring and observe live data or code reappearance to identify intermittent faults

Typical steering torque sensors use a 3‑wire configuration: reference (5 V), ground, and signal (analog) or dual redundant signals (A/B)
Idle/zero torque signal often near mid‑supply (~2.5 V) and should deviate smoothly as torque is applied (typical swing ±0.5–2 V depending on manufacturer)
Fault conditions: open circuit (no signal), short to ground (≈0 V), short to Vref (≈5 V) or implausible/unstable waveform
If sensor is digital/CAN, expect valid CAN messages or status bits — loss or invalid messages indicate wiring/module/Bus fault

Retrieve C1B24 and any related codes; record freeze frame and live data. Attempt to clear code then reproduce.
Inspect wiring and connectors at steering column, clock spring, and control module for damage, corrosion, or loosened pins.
With key ON (engine off), backprobe the sensor connector: verify reference voltage (≈5 V), ground continuity, and signal voltage (near mid‑rail at rest). Note values and compare to expected mid‑rail behavior.
Wiggle the steering wheel and harness while watching live sensor data; look for intermittent changes or reappearance of the fault.
If signal is absent or out of range, disconnect sensor and check for opens/shorts to ground or battery between sensor connector and module connector pins using an ohmmeter.
If wiring and connectors check good, replace or bench‑test the torque sensor/clock spring assembly per manufacturer procedure. Some sensors require specific calibration/relearn after replacement.
If a replaced sensor still shows fault and wiring is confirmed good, consider control module fault or CAN bus issue; consult manufacturer service information and consider module bench testing or replacement as last resort.
After repair, clear codes and perform required steering torque/angle calibrations and road test to confirm repair.