OBD Guide
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C1026

ABS Secondary Circuit Overboost Pressure

C1026 is an OBD-II diagnostic trouble code meaning: ABS Secondary Circuit Overboost Pressure. Common causes: abs hydraulic pump malfunction, clogged hydraulic lines. Estimated repair cost: $111–333.

Severity
🔴 High
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$111–333 (est.)

Symptoms

  • The ABS indicator on the dashboard is on
  • Reduced braking performance
  • Unusual noises when ABS is operating

Causes

  • ABS hydraulic pump malfunction
  • Clogged hydraulic lines
  • Problems with solenoid valves
  • Pressure sensor malfunction

How to Fix

  1. Check the brake fluid level
  2. Diagnose the ABS hydraulic pump
  3. Check the condition of the solenoid valves
  4. Clear or replace clogged lines
  5. Check pressure sensors

Related codes

C1015C1025C1030

FAQ

What does the C1026 code mean?

C1026 is an OBD-II diagnostic trouble code that indicates: ABS Secondary Circuit Overboost Pressure

What causes a C1026 error code?

The most common causes of C1026 include: ABS hydraulic pump malfunction; Clogged hydraulic lines; Problems with solenoid valves; Pressure sensor malfunction.

How do I fix a C1026 diagnostic trouble code?

To fix C1026: Check the brake fluid level. Diagnose the ABS hydraulic pump. Check the condition of the solenoid valves. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C1026?

Limited driving only, diagnose soon

How much does it cost to fix C1026?

The estimated repair cost for C1026 is $111–333. Actual cost depends on your vehicle, location, and labor rates.

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