OBD Guide
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C1189

ABS Brake Booster

C1189 is an OBD-II diagnostic trouble code meaning: ABS Brake Booster. Common causes: amplifier solenoid valve malfunction, open or shorted wiring harness. Estimated repair cost: $56–167.

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

Symptoms

  • ABS light is on
  • Increased braking distance
  • Hard brake pedal
  • Reduced braking performance

Causes

  • Amplifier solenoid valve malfunction
  • Open or shorted wiring harness
  • Problems with the ABS module
  • Contact corrosion
  • Low voltage in the on-board network

How to Fix

  1. Check the voltage in the on-board network
  2. Inspect the wiring harness for damage
  3. Check contacts for corrosion
  4. Test the amplifier solenoid valve
  5. If necessary, replace the ABS module

Related codes

C1190C1191C1192

FAQ

What does the C1189 code mean?

C1189 is an OBD-II diagnostic trouble code that indicates: ABS Brake Booster

What causes a C1189 error code?

The most common causes of C1189 include: Amplifier solenoid valve malfunction; Open or shorted wiring harness; Problems with the ABS module; Contact corrosion.

How do I fix a C1189 diagnostic trouble code?

To fix C1189: Check the voltage in the on-board network. Inspect the wiring harness for damage. Check contacts for corrosion. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C1189?

Limited driving only, diagnose soon

How much does it cost to fix C1189?

The estimated repair cost for C1189 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat