OBD Guide
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C1471

Brake System Volume Consumption Plausibility Failure

C1471 is an OBD-II diagnostic trouble code meaning: Brake System Volume Consumption Plausibility Failure. Common causes: brake fluid leak, malfunction of pressure sensors in the brake system. Estimated repair cost: $33–167.

Severity
🔴 High
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$33–167 (est.)

Symptoms

  • ABS/ESP warning light comes on
  • Reduced braking performance
  • Unusual behavior of the stabilization system

Causes

  • Brake fluid leak
  • Malfunction of pressure sensors in the brake system
  • Problems with the ABS/ESP hydraulic unit
  • Dirty or damaged wiring harness

How to Fix

  1. Check brake fluid level and leaks
  2. Diagnose the brake system on the stand
  3. Check pressure sensor readings
  4. Inspect and, if necessary, replace the hydraulic unit
  5. Check the integrity of the wiring harness

Related codes

C1470C1472C1473

FAQ

What does the C1471 code mean?

C1471 is an OBD-II diagnostic trouble code that indicates: Brake System Volume Consumption Plausibility Failure

What causes a C1471 error code?

The most common causes of C1471 include: Brake fluid leak; Malfunction of pressure sensors in the brake system; Problems with the ABS/ESP hydraulic unit; Dirty or damaged wiring harness.

How do I fix a C1471 diagnostic trouble code?

To fix C1471: Check brake fluid level and leaks. Diagnose the brake system on the stand. Check pressure sensor readings. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C1471?

Limited driving only, diagnose soon

How much does it cost to fix C1471?

The estimated repair cost for C1471 is $33–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat