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Home / DTC / C1371 — Yaw rate SNSR.stuck/low gain

C1371 — Yaw rate SNSR.stuck/low gain

Detailed page for trouble code C1371.

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Code

C1371

MITSUBISHI C — Chassis

Yaw rate SNSR.stuck/low gain

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

Causes

  • Failed or internally damaged yaw rate sensor (MEMS gyroscope)
  • Open/shorted/damaged wiring or corroded connector to the sensor
  • Poor sensor ground or low supply voltage
  • Faulty ABS/ESC control module or CAN bus communication error
  • Sensor mounting loose, misaligned, or contaminated (mechanical shock, water ingress)
  • Sensor requires recalibration or learning procedure after replacement or service

Symptoms

  • ABS, ESC, or traction control warning lamp illuminated
  • Stability control/traction control functionality reduced or disabled
  • Possible stored/frozen diagnostic trouble codes related to yaw, lateral accel or steering angle sensors
  • Vehicle may enter limp-stability mode under certain conditions
  • Noisy or inconsistent yaw rate data in live data stream (stuck at a fixed value)

What to check

  • Retrieve trouble codes and freeze frame with a capable scan tool; note related codes (steering angle, lateral accel, wheel speed, CAN errors).
  • Monitor live yaw rate sensor data at rest and while turning; expect ~0 deg/s at stationary and smooth proportional change during turns.
  • Compare yaw rate data to steering angle sensor and lateral acceleration data for consistency.
  • Visually inspect sensor mounting, connector, and wiring harness for damage, corrosion, pin push-out, or water ingress.
  • Check sensor supply voltage and ground at the connector (reference vehicle wiring diagram).
  • Check CAN bus or communication lines for errors if sensor transmits digitally.

Signal parameters

  • Yaw rate ~0 deg/s when vehicle is stationary
  • Smooth, proportional change in deg/s with steering input; no sudden jumps or flatlines
  • Typical sensor operating range commonly ±100–±200 deg/s (vehicle-specific—refer to factory spec)
  • Analog-type sensors may output a voltage centered near mid-supply; digital sensors will report via CAN/serial messages
  • No latched pegged value (max/min) and no excessive noise or drift

Diagnostic algorithm

  1. Connect an automotive scan tool capable of ABS/ESC diagnostics. Record C1371 and any related codes. Clear codes and see if C1371 returns.
  2. With the vehicle stationary, record yaw rate live data. It should be ~0 deg/s. Road test (or turn in-place) with live data to confirm response. Note any stuck or low-amplitude output.
  3. Inspect the yaw rate sensor and mounting for physical damage, contamination, or looseness. Repair or reseat if needed.
  4. Inspect connector and wiring for corrosion, bent pins, broken wires, or chafing. Repair any damaged wiring and secure harness.
  5. Verify sensor supply power and ground at the connector with a multimeter (reference vehicle wiring). Repair poor ground or supply issues.
  6. If the sensor is removable, bench-test or swap with a known-good sensor (if available) to confirm sensor failure.
  7. Check ABS/ESC module communication (CAN bus) and related fuses; repair communication faults if present.
  8. After repairs or sensor replacement, perform required yaw rate sensor calibration/zeroing using the factory scan tool or service procedure.
  9. Clear codes and perform a controlled road test while monitoring live data to confirm normal yaw rate behavior and that C1371 does not return.
  10. If fault persists after sensor, wiring, and ECU checks, consult manufacturer technical service bulletins or replace the ABS/ESC control module as a last resort.

Likely causes

  • Yaw rate sensor electrical failure
  • Connector corrosion or poor pin contact
  • Broken or chafed harness causing intermittent/low signal
  • Sensor shifted or improperly mounted after recent repairs
  • Failed ABS/ESC module or wiring to module

Fault status

⚠️ Status
Yaw rate sensor signal stuck or exhibiting low gain detected by the ABS/ESC system. Stability/traction control may be disabled until fault is resolved. Check sensor, wiring, and perform calibration after repair.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0-3.0 hours

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406

Browse 406 MITSUBISHI manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.

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