C1764

Code

Generic C — Chassis

Steering Angle Sensor Circuit Range/Performance

Brand: Generic

Type: C — Chassis

Views: UK: 17 EN: 21 RU: 22

AI status

Completed

ready

Completed 100%

Page language: EN

Causes

Failed or degraded steering angle sensor (potentiometer, Hall, MEMS or encoder)
Damaged wiring or poor connector connection (open, short to ground/voltage, high resistance)
Incorrect or missing sensor reference/ground voltage
Corroded or loose steering column connections or clock spring damage
Faulty ABS/ESC control module or poor CAN/lin communication
Sensor out of calibration after steering or suspension work

Symptoms

ABS, ESC or traction control warning lamp illuminated
Steering angle readout shows incorrect or erratic values in scan tool
Loss or reduction of stability control or adaptive steering functions
Increased brake/ABS activity under cornering or stability events
Intermittent faults that may clear and return, especially when steering is moved

What to check

Scan tool: read freeze frame, live steering angle values, and related codes (ABS, EPS, CAN)
Confirm vehicle speed vs steering angle correlation in live data
Check for other chassis/CAN communication codes that could affect sensor data
Visual inspection of steering column, sensor mounting, clock spring and wiring for damage or corrosion
Wiggle test connectors/wiring while watching live data for intermittent changes
Measure sensor reference voltage and ground at the connector with key ON

Signal parameters

Typical analog output: ~0.5–4.5 V with nominal center around 2.5 V (varies by manufacturer)
Some sensors provide dual redundant signals (A/B) 90° out of phase or complementary outputs
Digital sensors may use CAN/LIN or SENT protocol; data update rate commonly 10–100 Hz
Expected change: smooth, proportional voltage or count change across full left/right travel
Out-of-range: voltages near 0 V or supply voltage, no signal, or noisy/erratic waveform

Diagnostic algorithm

Retrieve all stored codes and freeze frame with a capable scan tool; note related ABS/ESC/EPS codes.
Verify symptom: monitor steering angle live data at rest and while slowly turning steering wheel; check for smooth proportional output and correct zero/center value.
Inspect connector and wiring at sensor and module for damage, corrosion, or loose pins. Repair as needed.
With key ON (engine off), measure sensor supply (reference) voltage and ground at the sensor connector; compare to spec (~5 V reference common, may vary).
Measure sensor output(s) while slowly steering; expect smooth voltage/count change. If output is stuck, noisy, or jumps, suspect sensor or wiring.
Perform wiggle test on harness/clock spring while monitoring live data to locate intermittent open/short.
If sensor is digital (CAN/LIN/SENT), verify bus integrity and message presence with scope or scan tool; check for bus errors.
Check steering angle calibration status; perform manufacturer specified recalibration/zeroing after repairs or alignment.
If wiring and calibration OK and fault persists, replace the steering angle sensor and/or clock spring, then clear codes and retest.
After repairs, perform a road test and re-check live data and code memory to confirm fault does not return.
Note: Follow vehicle manufacturer safety procedures when working near steering column and airbags.

Likely causes

Wiring harness chafed at steering column or bulkhead
Connector pins bent, corroded or pushed out at sensor or module
Clock spring worn or damaged causing intermittent contact
Sensor internal failure producing out-of-range voltage or signal
Sensor not zeroed/calibrated after wheel alignment or steering repairs

Fault status

⚠️ Status

Steering Angle Sensor Circuit Range/Performance — sensor output outside expected range or inconsistent with other vehicle sensors; may affect ABS/ESC functions.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 0.5-2.0 hours