C1975

Code

LAND ROVER C — Chassis

Failure of plausibility of dynamic stability control

Brand: LAND ROVER

Type: C — Chassis

Views: UK: 18 EN: 27 RU: 15

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Page language: EN

Causes

Faulty wheel speed sensor(s)
Faulty steering angle sensor (SAS)
Faulty yaw rate or lateral acceleration sensor
Intermittent or damaged wiring / poor connector connection
ABS/DSC module internal fault or software error
CAN bus communication errors or missing messages

Symptoms

DSC / ESP warning lamp illuminated
ABS or traction control warning lamp may also be on
Loss of traction/stability control intervention
Unusual ABS/traction behavior (unexpected interventions or disabled)
Stored related sensor or communication trouble codes

What to check

Read stored and pending DTCs and view freeze-frame data with a capable scanner
Check for related ABS/traction/airbag/CAN codes
Visually inspect wiring and connectors to wheel speed sensors, SAS, yaw sensor and ABS/DSC module
Verify module power and ground voltages
Check CAN bus for errors, termination and message presence
Confirm sensor calibrations and that SAS is centered/initialized

Signal parameters

Individual wheel speed sensor voltages or frequency (Hz) and calculated wheel speeds (km/h or mph)
Steering angle sensor (degrees) and steering angle estimated from wheel speeds
Yaw rate (deg/s) and lateral acceleration (m/s²)
Brake pressure (bar or psi) if available from brake pressure sensor
CAN bus message rates and error counters
ABS/DSC module supply voltage and ground voltage

Diagnostic algorithm

Read and record all stored codes and freeze-frame; note when code set and vehicle conditions.
Clear codes and attempt to re-create the fault during a controlled road test while monitoring live sensor data (wheel speeds, steering angle, yaw rate).
Compare wheel speed sensors at low speed — all four should show consistent rotation; identify any missing/erratic sensor.
Check steering angle sensor output at rest and while steering; verify it returns to center and is within expected range vs. actual steering input.
Monitor yaw rate versus steering angle and vehicle speed — large discrepancies indicate a yaw or SAS issue.
Inspect wiring, connectors and grounds for damage, corrosion, or loose connections; repair any faults and re-test.
Use an oscilloscope to verify sensor waveform integrity where applicable (wheel speed and yaw sensors).
Check CAN bus for lost messages or high error rate; repair bus issues before replacing control modules.
If sensors and wiring are good, check ABS/DSC module power/ground and internal diagnostics; update software or reprogram module if manufacturer bulletin/updates apply.
Replace only the confirmed faulty sensor or module and perform required calibrations (e.g., steering angle sensor calibration) and final road test.

Likely causes

One wheel speed sensor producing no or erratic signal
Steering angle sensor not initialized or out of range
Yaw rate sensor output inconsistent with steering angle and wheel speed
Damaged ground or power supply to ABS/DSC module
Module needs software update or reflash after hardware replacement

Fault status

⚠️ Status

DSC plausibility failure detected — stability control disabled. Inspect wheel speed, steering angle, yaw sensors, wiring and ABS/DSC communications.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 1.5 - 4.0 hours

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LAND ROVER

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