OBD Guide
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C1486

Rear Differential Motor Output Driver Over Temperature

C1486 is an OBD-II diagnostic trouble code meaning: Rear Differential Motor Output Driver Over Temperature. Common causes: frequent activation of the differential lock on hard surfaces, differential motor malfunction (increased current consumption). Estimated repair cost: $89–278.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$89–278 (est.)

Symptoms

  • Disabling the differential lock system
  • Malfunction indicator light comes on
  • Reduced efficiency on slippery surfaces
  • Possible clicking or strange sounds from the rear of the car

Causes

  • Frequent activation of the differential lock on hard surfaces
  • Differential motor malfunction (increased current consumption)
  • Problems with wiring to the driver
  • Defect of the driver module itself
  • Differential overheating due to low oil level

How to Fix

  1. System diagnostics using a scanner to check current parameters
  2. Visual inspection of wiring and connections to the driver
  3. Checking the level and condition of the oil in the differential
  4. Motor winding resistance testing
  5. Replacing the driver module if necessary
  6. Error reset and test drive to confirm repair

Related codes

C1480C1485C1487C1490

FAQ

What does the C1486 code mean?

C1486 is an OBD-II diagnostic trouble code that indicates: Rear Differential Motor Output Driver Over Temperature

What causes a C1486 error code?

The most common causes of C1486 include: Frequent activation of the differential lock on hard surfaces; Differential motor malfunction (increased current consumption); Problems with wiring to the driver; Defect of the driver module itself.

How do I fix a C1486 diagnostic trouble code?

To fix C1486: System diagnostics using a scanner to check current parameters. Visual inspection of wiring and connections to the driver. Checking the level and condition of the oil in the differential. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C1486?

Limited driving only, diagnose soon

How much does it cost to fix C1486?

The estimated repair cost for C1486 is $89–278. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat