B2306

Seat Headrest Motor Stalled

Body Chassis/Safety Seat Control System 🟢 Low — Fix at next service ✅ Safe to Drive
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What This Actually Means

In plain language — no jargon

The seat headrest motor is stuck or not responding to commands, similar to a power window that won't move despite the button being pressed. The vehicle's control module detected that the motor either seized up or lost electrical connection during operation.

Symptoms You May Notice

3 known symptoms for this code
Headrest fails to move up or down when control button is pressed
Headrest moves partially then stops unexpectedly
Clicking or grinding noise from headrest motor area
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How Your ECU Detects This

Technical sensor logic and voltage thresholds

The ECU monitors motor current draw and movement feedback during headrest adjustment commands. It detects a stall condition when current exceeds normal operating range or when the motor fails to complete its travel within the expected time window.

Voltage & Parameter Thresholds

ParameterNormal RangeFault Condition
Motor Current Draw 0.5–2.5 amps during operation >3.5 amps or no change for >5 seconds
Position Feedback Response Completes full travel in 3–8 seconds No position change detected within timeout period
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Diagnostic & DIY Fix Guide

Check these in order — from cheapest to most complex
1
Headrest motor connector
Disconnect and reconnect the motor electrical connector to clear any corrosion or poor contact.
2
Headrest assembly lubricant
Apply silicone-based lubricant to the headrest track and guide rails to reduce friction.
3
Headrest motor assembly
Replace the entire motor unit if stalling persists after cleaning connections and lubrication.
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When to See a Professional Mechanic

Not all fault codes are safe to DIY

Code B2306 is a low-severity fault. Your vehicle is generally safe to drive to a workshop for diagnosis. However, do not ignore it indefinitely — low-severity codes often indicate developing problems that become expensive if neglected. Book a diagnostic appointment within 2–4 weeks. If you notice any additional symptoms (rough running, power loss, unusual smells), treat it as higher priority.

Safety note: OBD-II codes identify the system or circuit where a fault was detected — they do not always identify the exact failed component. A professional mechanic using live sensor data will diagnose the root cause more accurately than replacing parts based on the code alone.
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How to Clear Code B2306

What happens after you fix the fault

Once the fault is repaired, B2306 can be cleared using any OBD-II scanner. Connect the scanner, navigate to "Clear Codes" or "Erase DTCs," and confirm. The check engine light turns off immediately.

The code will return if the root cause was not actually fixed. The ECM re-detects the fault within 1–3 drive cycles and sets the code again.

✅ Safe to Clear When
  • Fault has been diagnosed and repaired
  • You want to confirm the repair worked
  • Code appeared after a sensor was cleaned
⚠️ Do Not Clear When
  • Preparing for an emissions/PUC test
  • Root cause is still undiagnosed
  • Check engine light is flashing
Emissions test note: Clearing codes resets OBD readiness monitors. Most vehicles need 50–100 km of mixed driving before monitors complete. Do not clear codes immediately before an emissions or PUC inspection.