Home / DTC / B1067 — Air outlet travel range too L

B1067 — Air outlet travel range too L

Detailed page for trouble code B1067.

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Code

B1067

MITSUBISHI B — Body

Air outlet travel range too L

Brand: MITSUBISHI
Type: B — Body
AI status
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ready
Completed 100%
Page language: EN

Causes

  • Faulty air outlet (mode) actuator motor or internal gearbox
  • Damaged or seized air outlet door linkage or mechanical obstruction
  • Faulty position sensor (potentiometer) inside actuator or bad feedback signal
  • Open, shorted or corroded wiring or connector to the actuator
  • Blown fuse or HVAC control module fault/software issue
  • Recent HVAC work or physical impact that misaligned door or stops

Symptoms

  • Incorrect vent selection (airflow directed to wrong outlet)
  • One or more vents stuck in a single position or not responding
  • Audible clicking or grinding from dash when changing mode
  • DTC B1067 stored in body/HVAC control module
  • HVAC mode switch commands not producing expected door movement

What to check

  • Verify stored DTCs and freeze-frame data with a diagnostic scanner
  • Operate HVAC mode changes while listening/observing actuator movement
  • Inspect fuses related to HVAC and replace if blown
  • Visually inspect actuator connector for corrosion, damage or loose pins
  • Manually move vent doors (with ignition off) to check for binding or obstructions
  • Check battery/ignition voltage at actuator connector while commanding movement

Signal parameters

  • Actuator supply: battery voltage (~12 V) present at motor supply when commanded
  • Position/feedback sensor: output typically 0–5 V range (varies with position)
  • Control signal type: motor drive or PWM from HVAC control module (frequency varies by model)
  • Expected resistance: actuator motor windings normally show continuity (low ohms); open = fault
  • No PWM or stuck voltage on feedback indicates sensor or wiring problem

Diagnostic algorithm

  1. Connect a capable scan tool, read and record B1067 and any related HVAC codes; note conditions when code set.
  2. With ignition ON, command HVAC mode changes and observe which vent doors move and listen for actuator noise; note any that do not respond or click.
  3. Visually inspect the actuator and linkage for physical damage, ice, debris or binding; attempt to move door manually to confirm free movement.
  4. Inspect actuator connector and wiring harness for corrosion, damage, or poor contact; repair any damaged wiring or terminals.
  5. Backprobe actuator connector while commanding movement: verify battery voltage supply appears when motor should drive and measure position sensor output changes as door moves.
  6. If position feedback is fixed or out of expected range, remove actuator and bench-test/replace actuator or sensor assembly as per service manual.
  7. If actuator bench-tests OK, check for intermittent wiring or control module outputs; inspect HVAC control module connections and grounds.
  8. After repair or replacement, clear DTCs and perform actuator/door calibration or HVAC self-learn procedure if required by the manufacturer.
  9. Re-test HVAC operation through full range and confirm code does not return; if intermittent, perform wiggle tests on harnesses and re-check.

Likely causes

  • Worn or failed air outlet actuator (most common)
  • HVAC vent door binding or obstructed by debris
  • Poor connector contact or chafed wiring causing intermittent signal
  • Position sensor inside actuator out of calibration or failed
  • HVAC control unit calibration or software error

Fault status

⚠️ Status
Air outlet actuator travel range out of expected range (Left/low limit detected).
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-2.0 hours

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