Home / DTC / C2242 — Steering Angle Sensor B Circuit Range/Performance

C2242 — Steering Angle Sensor B Circuit Range/Performance

Detailed page for trouble code C2242.

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C2242

Generic C — Chassis

Steering Angle Sensor B Circuit Range/Performance

Brand: Generic
Views: UK: 0 EN: 1 RU: 2
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Page language: EN

Causes

  • Faulty steering angle sensor (channel B)
  • Damaged, corroded, loose or shorted wiring/connectors in the sensor circuit (power, ground, signal)
  • Incorrect or lost sensor reference voltage or ground
  • Intermittent connection (wiggle/intermittent failure)
  • Faulty ABS/ESC/steering control module or internal module calibration error
  • Improper sensor alignment/calibration (zero-point not set)

Symptoms

  • Illuminated ABS, ESC or Traction Control warning lamp
  • Steering angle-related warnings on dash (e.g., 'Service Stability')
  • Intermittent or persistent diagnostic trouble code C2242 stored
  • Reduced or disabled stability/traction control intervention
  • Possible unusual behavior from steering angle-dependent systems
  • No obvious steering feel change (mechanical steering may still feel normal)

What to check

  • Retrieve DTCs and freeze-frame data with a scan tool; note conditions when the fault set
  • Check for related codes (ABS, ESC, other steering angle codes)
  • Visual inspection of steering column area, sensor connector and harness for damage, corrosion or looseness
  • Verify battery voltage and proper vehicle grounding
  • Compare live data: steering angle sensor B vs sensor A (if available) and vs vehicle speed/wheel angle data
  • Wiggle harness/connectors while monitoring live data to reproduce the fault

Signal parameters

  • Typical supply/reference voltage: ~5.0 V (verify with vehicle spec)
  • Signal output (typical): ~0.5–4.5 V proportional to steering angle (varies by manufacturer)
  • Expected ground at sensor: ~0 V
  • Angle output range: ±360–±720 degrees total rotation (reported as degrees or counts over CAN)
  • Resolution: often 0.1–1.0 degree increments (depends on sensor)
  • Resistance (for some potentiometric sensors): few kiloohms across terminals (check OEM spec)

Diagnostic algorithm

  1. Connect a capable scan tool. Record freeze-frame data and note when C2242 set (vehicle speed, steering position, ignition status).
  2. Check for other related codes (ABS/ESC/steering). If multiple modules report steering angle faults, consider shared power/ground issue.
  3. Visually inspect sensor connector and wiring at the steering column for corrosion, pulled pins, pinched wires or physical damage.
  4. With ignition ON, monitor live data for Steering Angle Sensor B and Steering Angle Sensor A (if present). Verify both tracks move together and that B is within expected range relative to A and wheel movement.
  5. Perform wiggle test on harness and connectors while observing live data to identify intermittent faults.
  6. Measure reference voltage and ground at the sensor connector. Compare to spec. If reference voltage missing or noisy, trace back to fuse, ignition feed or module power.
  7. Measure signal voltage while slowly turning the steering wheel through full range. Signal should change smoothly without jumps or dropouts. Check resistance where applicable per OEM procedure.
  8. If wiring and supply are good but signal is out of range or erratic, try disconnecting the sensor and observe codes/live data behavior per service manual before replacement.
  9. If a sensor is replaced or repaired, clear codes and perform required steering angle sensor calibration/zero-point procedure with the scan tool and perform a road test to verify.
  10. If fault persists after sensor replacement and calibration, investigate ABS/ESC control module inputs/grounds and consider module fault or programming issue.

Likely causes

  • Corroded or loose connector at the steering angle sensor
  • Broken or pinched signal wire between sensor and control module
  • Failed steering angle sensor element (potentiometer or encoder)
  • Loss of reference voltage or ground to sensor
  • Sensor needs recalibration after battery disconnect or steering work

Fault status

⚠️ Status
When C2242 is set the stability/traction control system may be disabled or limited. The ABS/ESC warning lamp and/or a stability system message may display. The fault is stored in module memory and may include freeze-frame data indicating the vehicle and steering conditions when the error occurred. Clearing the code without correcting the root cause may result in reoccurrence.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0-3.0 hours

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