OBD Guide
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C1484

Rear Differential Brake Control

C1484 is an OBD-II diagnostic trouble code meaning: Rear Differential Brake Control. Common causes: wheel speed sensor malfunction, wiring harness problems. Estimated repair cost: $56–167.

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

Symptoms

  • Check Engine light comes on
  • Poor handling on slippery surfaces
  • Unstable operation of the all-wheel drive system

Causes

  • Wheel speed sensor malfunction
  • Wiring Harness Problems
  • Differential control solenoid valve failure
  • Mechanical damage to the differential brake system

How to Fix

  1. Diagnose the error code using an OBD-II scanner
  2. Check the integrity of the wiring harness and connections
  3. Test wheel speed sensors
  4. Check the operation of the differential solenoid valve
  5. If necessary, replace faulty components

Related codes

C1485C1486C1487

FAQ

What does the C1484 code mean?

C1484 is an OBD-II diagnostic trouble code that indicates: Rear Differential Brake Control

What causes a C1484 error code?

The most common causes of C1484 include: Wheel speed sensor malfunction; Wiring Harness Problems; Differential control solenoid valve failure; Mechanical damage to the differential brake system.

How do I fix a C1484 diagnostic trouble code?

To fix C1484: Diagnose the error code using an OBD-II scanner. Check the integrity of the wiring harness and connections. Test wheel speed sensors. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C1484?

Limited driving only, diagnose soon

How much does it cost to fix C1484?

The estimated repair cost for C1484 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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