OBD Guide

C064B

Brake Pressure Sensor M Circuit Low

C064B is an OBD-II diagnostic trouble code meaning: Brake Pressure Sensor M Circuit Low. Common causes: brake pressure sensor malfunction, open or short circuit in 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 brake system fault indicator is on
  • Reduced ABS/ESC performance
  • Unusual brake behavior (eg soft pedal)

Causes

  • Brake pressure sensor malfunction
  • Open or short circuit in wiring harness
  • Poor contact in the sensor connector
  • Problems with power or circuit ground
  • Malfunction of the brake system control unit

How to Fix

  1. Check the integrity of the wiring harness and connectors
  2. Measure resistance and voltage at the sensor
  3. Check ground and power circuit
  4. Replace brake pressure sensor if necessary
  5. Scan the system for other errors

Related codes

Error C064B by Vehicle Brand

FAQ

What does the C064B code mean?

C064B is an OBD-II diagnostic trouble code that indicates: Brake Pressure Sensor M Circuit Low

What causes a C064B error code?

The most common causes of C064B include: Brake pressure sensor malfunction; Open or short circuit in wiring harness; Poor contact in the sensor connector; Problems with power or circuit ground.

How do I fix a C064B diagnostic trouble code?

To fix C064B: Check the integrity of the wiring harness and connectors. Measure resistance and voltage at the sensor. Check ground and power circuit. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C064B?

Limited driving only, diagnose soon

How much does it cost to fix C064B?

The estimated repair cost for C064B is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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