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Home / DTC / C1287 — Steering Sensor Rate Malfunction

C1287 — Steering Sensor Rate Malfunction

Detailed page for trouble code C1287.

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Code

C1287

HUMMER C — Chassis

Steering Sensor Rate Malfunction

Brand: HUMMER
Type: C — Chassis
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Faulty steering angle/rate sensor (steering position sensor)
  • Open, shorted, or corroded wiring/connectors between sensor and control module
  • Faulty steering angle sensor ground or reference voltage
  • Intermittent or lost CAN/bus communication carrying steering data
  • Failed steering control module (EPS/ASC) or chassis control module
  • Clock spring or slip ring damage (affecting steering wheel sensors)

Symptoms

  • ABS, Traction Control, or StabiliTrak warning lamp illuminated
  • Steering assist may be reduced or altered (intermittent EPS warnings)
  • Inconsistent or incorrect steering angle displayed in scan tool data
  • Vehicle may enter a reduced-stability or limp mode
  • DTC may be intermittent or permanent depending on fault

What to check

  • Retrieve all related codes and freeze frame data with a scan tool
  • Check live data: steering angle, steering rate (deg/s), sensor voltage, and CAN messages
  • Inspect sensor connector, wiring harness, and ground for corrosion, damage, or looseness
  • Verify sensor reference voltage and ground at the connector with a DMM
  • Wiggle test wiring while observing live data for intermittent changes
  • Check for other chassis or ABS/ESP codes that may be related

Signal parameters

  • Steering angle sensor output: typically analog or digital position signal; center reference near mid-rail voltage (approx. 0.5–4.5 V range) depending on manufacturer
  • Steering rate: reported as degrees per second (deg/s) or computed by controller from consecutive angle readings
  • Update rate: steering sensor/CAN messages normally update multiple times per second (varies by system)
  • Expected behavior: smooth, continuous angle changes; rate values should correlate with wheel/tire movement
  • Fault indicators: sudden jumps, implausible high rate values, missing or irregular message timing

Diagnostic algorithm

  1. Connect a professional scan tool, record C1287 and any related codes; note freeze frame and data.
  2. Clear codes and attempt to reproduce while monitoring steering angle and rate data. Note if code returns and under what conditions.
  3. Visually inspect sensor, clock spring (if applicable), connectors, and harness for damage or corrosion. Repair any physical faults.
  4. With ignition on, backprobe sensor connector: verify correct reference voltage (Vref), signal voltage, and ground. Compare to expected values in service data.
  5. Perform wiggle/continuity test on wiring between sensor and control module; repair short/open conditions.
  6. Monitor CAN bus and module inputs for communication errors. Check other modules for network faults.
  7. If wiring and power/ground are good but signal is implausible, replace the steering angle/rate sensor.
  8. After replacement or repair, perform steering angle sensor calibration/relearn using appropriate scan tool procedure.
  9. Clear codes and test drive to confirm no recurrence and correct live-data behavior.
  10. If fault persists after sensor replacement and calibration, consider module-level diagnostics or replacement of steering control/chassis module per manufacturer procedures.

Likely causes

  • Damaged wiring or poor connector at steering angle/rate sensor
  • Failed steering angle sensor (internal electronics)
  • Missing or noisy reference voltage/ground to the sensor
  • Communication fault on CAN bus or module failure (less common)

Fault status

⚠️ Status
Steering Sensor Rate Malfunction — steering rate signal is out of expected range, missing, or erratic. Stability/assist systems may be affected.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0-2.5 hours

Similar codes

C1286 C1288 C1235 C1259 C1216
Repair manuals

Manual library for HUMMER

138

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HUMMER

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Code

C1287

LAND ROVER C — Chassis

Throttle pedal force switch - circuit failure

Brand: LAND ROVER
Type: C — Chassis
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Faulty steering angle/rate sensor (steering position sensor)
  • Open, shorted, or corroded wiring/connectors between sensor and control module
  • Faulty steering angle sensor ground or reference voltage
  • Intermittent or lost CAN/bus communication carrying steering data
  • Failed steering control module (EPS/ASC) or chassis control module
  • Clock spring or slip ring damage (affecting steering wheel sensors)

Symptoms

  • ABS, Traction Control, or StabiliTrak warning lamp illuminated
  • Steering assist may be reduced or altered (intermittent EPS warnings)
  • Inconsistent or incorrect steering angle displayed in scan tool data
  • Vehicle may enter a reduced-stability or limp mode
  • DTC may be intermittent or permanent depending on fault

What to check

  • Retrieve all related codes and freeze frame data with a scan tool
  • Check live data: steering angle, steering rate (deg/s), sensor voltage, and CAN messages
  • Inspect sensor connector, wiring harness, and ground for corrosion, damage, or looseness
  • Verify sensor reference voltage and ground at the connector with a DMM
  • Wiggle test wiring while observing live data for intermittent changes
  • Check for other chassis or ABS/ESP codes that may be related

Signal parameters

  • Steering angle sensor output: typically analog or digital position signal; center reference near mid-rail voltage (approx. 0.5–4.5 V range) depending on manufacturer
  • Steering rate: reported as degrees per second (deg/s) or computed by controller from consecutive angle readings
  • Update rate: steering sensor/CAN messages normally update multiple times per second (varies by system)
  • Expected behavior: smooth, continuous angle changes; rate values should correlate with wheel/tire movement
  • Fault indicators: sudden jumps, implausible high rate values, missing or irregular message timing

Diagnostic algorithm

  1. Connect a professional scan tool, record C1287 and any related codes; note freeze frame and data.
  2. Clear codes and attempt to reproduce while monitoring steering angle and rate data. Note if code returns and under what conditions.
  3. Visually inspect sensor, clock spring (if applicable), connectors, and harness for damage or corrosion. Repair any physical faults.
  4. With ignition on, backprobe sensor connector: verify correct reference voltage (Vref), signal voltage, and ground. Compare to expected values in service data.
  5. Perform wiggle/continuity test on wiring between sensor and control module; repair short/open conditions.
  6. Monitor CAN bus and module inputs for communication errors. Check other modules for network faults.
  7. If wiring and power/ground are good but signal is implausible, replace the steering angle/rate sensor.
  8. After replacement or repair, perform steering angle sensor calibration/relearn using appropriate scan tool procedure.
  9. Clear codes and test drive to confirm no recurrence and correct live-data behavior.
  10. If fault persists after sensor replacement and calibration, consider module-level diagnostics or replacement of steering control/chassis module per manufacturer procedures.

Likely causes

  • Damaged wiring or poor connector at steering angle/rate sensor
  • Failed steering angle sensor (internal electronics)
  • Missing or noisy reference voltage/ground to the sensor
  • Communication fault on CAN bus or module failure (less common)

Fault status

⚠️ Status
Steering Sensor Rate Malfunction — steering rate signal is out of expected range, missing, or erratic. Stability/assist systems may be affected.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0-2.5 hours

Similar codes

C1286 C1288 C1235 C1259 C1216
320

Browse 320 LAND ROVER manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.

LAND ROVER

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Code

C1287

Other C — Chassis

Booster Pedal Force switch circuit Failure

Brand: Other
Type: C — Chassis
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Faulty steering angle/rate sensor (steering position sensor)
  • Open, shorted, or corroded wiring/connectors between sensor and control module
  • Faulty steering angle sensor ground or reference voltage
  • Intermittent or lost CAN/bus communication carrying steering data
  • Failed steering control module (EPS/ASC) or chassis control module
  • Clock spring or slip ring damage (affecting steering wheel sensors)

Symptoms

  • ABS, Traction Control, or StabiliTrak warning lamp illuminated
  • Steering assist may be reduced or altered (intermittent EPS warnings)
  • Inconsistent or incorrect steering angle displayed in scan tool data
  • Vehicle may enter a reduced-stability or limp mode
  • DTC may be intermittent or permanent depending on fault

What to check

  • Retrieve all related codes and freeze frame data with a scan tool
  • Check live data: steering angle, steering rate (deg/s), sensor voltage, and CAN messages
  • Inspect sensor connector, wiring harness, and ground for corrosion, damage, or looseness
  • Verify sensor reference voltage and ground at the connector with a DMM
  • Wiggle test wiring while observing live data for intermittent changes
  • Check for other chassis or ABS/ESP codes that may be related

Signal parameters

  • Steering angle sensor output: typically analog or digital position signal; center reference near mid-rail voltage (approx. 0.5–4.5 V range) depending on manufacturer
  • Steering rate: reported as degrees per second (deg/s) or computed by controller from consecutive angle readings
  • Update rate: steering sensor/CAN messages normally update multiple times per second (varies by system)
  • Expected behavior: smooth, continuous angle changes; rate values should correlate with wheel/tire movement
  • Fault indicators: sudden jumps, implausible high rate values, missing or irregular message timing

Diagnostic algorithm

  1. Connect a professional scan tool, record C1287 and any related codes; note freeze frame and data.
  2. Clear codes and attempt to reproduce while monitoring steering angle and rate data. Note if code returns and under what conditions.
  3. Visually inspect sensor, clock spring (if applicable), connectors, and harness for damage or corrosion. Repair any physical faults.
  4. With ignition on, backprobe sensor connector: verify correct reference voltage (Vref), signal voltage, and ground. Compare to expected values in service data.
  5. Perform wiggle/continuity test on wiring between sensor and control module; repair short/open conditions.
  6. Monitor CAN bus and module inputs for communication errors. Check other modules for network faults.
  7. If wiring and power/ground are good but signal is implausible, replace the steering angle/rate sensor.
  8. After replacement or repair, perform steering angle sensor calibration/relearn using appropriate scan tool procedure.
  9. Clear codes and test drive to confirm no recurrence and correct live-data behavior.
  10. If fault persists after sensor replacement and calibration, consider module-level diagnostics or replacement of steering control/chassis module per manufacturer procedures.

Likely causes

  • Damaged wiring or poor connector at steering angle/rate sensor
  • Failed steering angle sensor (internal electronics)
  • Missing or noisy reference voltage/ground to the sensor
  • Communication fault on CAN bus or module failure (less common)

Fault status

⚠️ Status
Steering Sensor Rate Malfunction — steering rate signal is out of expected range, missing, or erratic. Stability/assist systems may be affected.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0-2.5 hours

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C1286 C1288 C1235 C1259 C1216
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