OBD Guide
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C1485

Rear Differential Motor Brake Output Driver Over Temperature

C1485 is an OBD-II diagnostic trouble code meaning: Rear Differential Motor Brake Output Driver Over Temperature. Common causes: rear differential system overload, differential brake output driver malfunction. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • The malfunction indicator on the dashboard lights up
  • Reduced all-wheel drive efficiency
  • Disabling the rear differential lock function

Causes

  • Rear differential system overload
  • Differential Brake Output Driver Malfunction
  • Problems with wiring harness or contacts
  • Overheating of components due to insufficient cooling

How to Fix

  1. Check wiring harness and contacts for damage
  2. Check the functionality of the differential brake output driver
  3. Replace the faulty driver if necessary
  4. Ensure sufficient cooling of system components

Related codes

C1480C1481C1482

FAQ

What does the C1485 code mean?

C1485 is an OBD-II diagnostic trouble code that indicates: Rear Differential Motor Brake Output Driver Over Temperature

What causes a C1485 error code?

The most common causes of C1485 include: Rear differential system overload; Differential Brake Output Driver Malfunction; Problems with wiring harness or contacts; Overheating of components due to insufficient cooling.

How do I fix a C1485 diagnostic trouble code?

To fix C1485: Check wiring harness and contacts for damage. Check the functionality of the differential brake output driver. Replace the faulty driver if necessary. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C1485?

Limited driving only, diagnose soon

How much does it cost to fix C1485?

The estimated repair cost for C1485 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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