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Home / DTC / C1379 — Data length error(STR.angle S.)

C1379 — Data length error(STR.angle S.)

Detailed page for trouble code C1379.

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Code

C1379

MITSUBISHI C — Chassis

Data length error(STR.angle S.)

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

Causes

  • Faulty steering angle sensor (internal failure)
  • Damaged or corroded connector or wiring between sensor and control module
  • CAN/communication bus errors or intermittent faults
  • Incorrect or corrupted message formatting from a module (software/firmware issue)
  • Poor battery/low voltage during communication or sensor power interruption
  • Failed steering column control module or EPS control unit

Symptoms

  • ABS, ESC or EPS warning lamp illuminated
  • Loss or limited function of traction/stability control systems
  • Steering angle reading absent or implausible on diagnostic scan tool
  • Cruise control or lane-assist features disabled
  • Possible intermittent steering assist faults (for EPS-equipped vehicles)

What to check

  • Read all stored and pending codes with a capable scan tool; record freeze-frame and live data
  • Visually inspect steering angle sensor connector and wiring for corrosion, breaks, chafing or pin damage
  • Check battery voltage and charging system while performing communications tests
  • Check for CAN-bus fault codes (U-codes) and for excessive CAN error counters
  • Using scan tool, monitor steering angle live data while turning steering wheel to see if values respond and have correct range
  • If sensor is analog: measure sensor output voltage (center ~2.5V, 0.5–4.5V typical) and continuity of supply/ground

Signal parameters

  • Expected data packet length: typically fixed (e.g., 6–8 bytes) — diagnostic tool will show expected vs received length
  • Update rate: steering-angle data commonly updates at 10–100 Hz on CAN or faster in some systems
  • Analog sensors: typical center voltage ~2.5 V, range ~0.5–4.5 V (verify against service literature)
  • Absolute angle range often reported across ±720° (or limited range depending on vehicle)
  • CAN physical layer: 2.5 V recessive idle; differential signaling — check for bus errors with scope or CAN tester

Diagnostic algorithm

  1. Connect a manufacturer-level scan tool and record C1379 details, related codes and freeze frame. Clear the code and attempt to re-run to see if it returns.
  2. Visually inspect the steering angle sensor connector and harness for damage, corrosion or loose pins. Repair any wiring faults and retest.
  3. Verify vehicle battery voltage is within spec and that sensor/module supply and ground circuits are intact (measure at connector).
  4. Check for CAN-bus errors and related U-codes. If CAN errors are present, diagnose/repair bus wiring, terminations, and other nodes before replacing the sensor.
  5. Using live data, observe steering angle values while turning the wheel. If data is missing, corrupted or shows invalid packet length, capture the bus traffic with a CAN sniffer or oscilloscope to confirm malformed frames.
  6. If wiring and bus are good and sensor signals are out of spec, perform steering angle sensor zero-point (relearn/calibration) per service procedure. Attempt clear and reinitialization.
  7. If the fault persists after wiring, bus and calibration checks, replace the steering angle sensor or the affected control module as directed by service manual. Reprogram/relearn and confirm DTC does not return.
  8. After repairs, road test and re-scan to ensure proper operation and that stability/ABS/EPS systems function normally.

Likely causes

  • Damaged connector/wiring between steering angle sensor and ABS/ESP/EPS module
  • Faulty steering angle sensor producing malformed data
  • Intermittent CAN-bus communication errors between sensor module and receiving ECU
  • Control module software fault or incorrect parameterization

Fault status

⚠️ Status
Steering angle sensor data length invalid — control module detected malformed or incorrect-size data packet from steering angle source. Possible sensor, wiring, or CAN/communication fault.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0-2.5 hours

Similar codes

C1378 C1380 U0073 U0100 C1523
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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