OBD Guide

C2799

Brake Pressure Transducer Supply Circuit Open

C2799 is an OBD-II diagnostic trouble code meaning: Brake Pressure Transducer Supply Circuit Open. Common causes: broken or damaged wiring harness, brake pressure sensor malfunction. 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/ESP performance
  • Incorrect pressure readings in the brake system

Causes

  • Broken or damaged wiring harness
  • Brake pressure sensor malfunction
  • Corroded contacts or poor connection in connectors
  • Problems with power or grounding of the sensor

How to Fix

  1. Check the integrity of the wiring harness and connectors
  2. Check the supply voltage and grounding of the sensor
  3. Replace the brake pressure sensor if necessary
  4. Clean or replace corroded contacts

Related codes

FAQ

What does the C2799 code mean?

C2799 is an OBD-II diagnostic trouble code that indicates: Brake Pressure Transducer Supply Circuit Open

What causes a C2799 error code?

The most common causes of C2799 include: Broken or damaged wiring harness; Brake pressure sensor malfunction; Corroded contacts or poor connection in connectors; Problems with power or grounding of the sensor.

How do I fix a C2799 diagnostic trouble code?

To fix C2799: Check the integrity of the wiring harness and connectors. Check the supply voltage and grounding of the sensor. Replace the brake pressure sensor if necessary. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C2799?

Limited driving only, diagnose soon

How much does it cost to fix C2799?

The estimated repair cost for C2799 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat