B0072 moderate

Right Headlight Motor Circuit Malfunction

The B0072 code means the vehicle's onboard diagnostic system has detected: Right Headlight Motor Circuit Malfunction. This is a moderate severity code.

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Keep driving?
Short distances only
DIY difficulty
hard
Estimated cost
$100 - $500 (parts and labor)
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Common Symptoms

  • Right pop-up headlight stuck
  • Right headlight does not retract or extend
  • Grinding noise from right headlight area
  • Asymmetric headlight appearance

Probable Causes (Ranked by Likelihood)

  • Failed headlight motor or actuator Very High
  • Stripped headlight motor gear High
  • Corroded motor wiring connector Moderate
  • Headlight motor relay failure Low

Step-by-Step Diagnostic Procedure

  1. Test motor with direct power

  2. Inspect gear for stripped teeth

  3. Check wiring and connector

  4. Test motor relay

Frequently Asked Questions

Replace both motors at once?

Yes, if one failed the other is likely near end of life.

Can I convert to fixed headlights?

Aftermarket kits are available for Miata and Corvette.

Is it safe to drive with one stuck down?

Driving at night with one headlight is illegal and dangerous.

Sources

This page is built from documented references. Verify against your own service info before repair work.

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