OBD Guide
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B112D

Rear Window Defrost LED Circuit

B112D is an OBD-II diagnostic trouble code meaning: Rear Window Defrost LED Circuit. Common causes: open or short circuit in the circuit, damage to led heating elements. Estimated repair cost: $33–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$33–167 (est.)

Symptoms

  • Heated rear window does not work
  • The heated rear window indicator flashes
  • Condensation appears on the rear window

Causes

  • Open or short circuit in the circuit
  • Damage to LED heating elements
  • Corrosion of contacts or connectors
  • Control module malfunction
  • Wiring Harness Problems

How to Fix

  1. Check the integrity of the LED heating elements
  2. Inspect the wiring harness and contacts for damage and corrosion.
  3. Check fuses and relays associated with the heating system
  4. Scan the control module for additional errors
  5. If necessary, replace damaged elements or wiring harness

Related codes

B112EB112FB1130

FAQ

What does the B112D code mean?

B112D is an OBD-II diagnostic trouble code that indicates: Rear Window Defrost LED Circuit

What causes a B112D error code?

The most common causes of B112D include: Open or short circuit in the circuit; Damage to LED heating elements; Corrosion of contacts or connectors; Control module malfunction.

How do I fix a B112D diagnostic trouble code?

To fix B112D: Check the integrity of the LED heating elements. Inspect the wiring harness and contacts for damage and corrosion.. Check fuses and relays associated with the heating system. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B112D?

Limited driving only, diagnose soon

How much does it cost to fix B112D?

The estimated repair cost for B112D is $33–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat