OBD Guide
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C1229

Rear Anti-Lock Brake Sensor

C1229 is an OBD-II diagnostic trouble code meaning: Rear Anti-Lock Brake Sensor. Common causes: abs sensor damage, open or shorted wiring harness. Estimated repair cost: $56–167.

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

Symptoms

  • The ABS indicator on the dashboard is on
  • ABS system does not work when braking
  • Unstable operation of the ABS system
  • Loss of rear wheel speed data

Causes

  • ABS sensor damage
  • Open or shorted wiring harness
  • The touch ring is dirty or damaged
  • Wheel bearing failure
  • Problems with the ABS control unit

How to Fix

  1. Check the integrity of the ABS sensor
  2. Inspect the wiring harness for damage
  3. Clean the touch ring from dirt
  4. Check the sensor resistance (should be between 800-1500 Ohms)
  5. Replace sensor if necessary
  6. Test the ABS system after repair

Related codes

C0030C0035C0040C1228

FAQ

What does the C1229 code mean?

C1229 is an OBD-II diagnostic trouble code that indicates: Rear Anti-Lock Brake Sensor

What causes a C1229 error code?

The most common causes of C1229 include: ABS sensor damage; Open or shorted wiring harness; The touch ring is dirty or damaged; Wheel bearing failure.

How do I fix a C1229 diagnostic trouble code?

To fix C1229: Check the integrity of the ABS sensor. Inspect the wiring harness for damage. Clean the touch ring from dirt. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C1229?

Limited driving only, diagnose soon

How much does it cost to fix C1229?

The estimated repair cost for C1229 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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