OBD Guide

C054D

Vacuum Sensor B Circuit/Open

C054D is an OBD-II diagnostic trouble code meaning: Vacuum Sensor B Circuit/Open. Common causes: open or short circuit in vacuum sensor b wiring harness, vacuum sensor b fault. Estimated repair cost: $56–167.

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

Symptoms

  • Deterioration of vehicle dynamics
  • Increased fuel consumption
  • Check Engine Light Is On
  • Unstable engine operation at idle

Causes

  • Open or short circuit in vacuum sensor B wiring harness
  • Vacuum sensor B fault
  • Poor contact in the sensor connector
  • Problems with the ECU

How to Fix

  1. Check the continuity of the vacuum sensor B wiring harness.
  2. Check sensor connections and connectors
  3. Test Vacuum Sensor B with a Multimeter
  4. Replace vacuum sensor B if necessary
  5. Check and replace wiring harness if necessary
  6. Reset the error and check if it returns

Related codes

Error C054D by Vehicle Brand

FAQ

What does the C054D code mean?

C054D is an OBD-II diagnostic trouble code that indicates: Vacuum Sensor B Circuit/Open

What causes a C054D error code?

The most common causes of C054D include: Open or short circuit in vacuum sensor B wiring harness; Vacuum sensor B fault; Poor contact in the sensor connector; Problems with the ECU.

How do I fix a C054D diagnostic trouble code?

To fix C054D: Check the continuity of the vacuum sensor B wiring harness.. Check sensor connections and connectors. Test Vacuum Sensor B with a Multimeter. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C054D?

Limited driving only, diagnose soon

How much does it cost to fix C054D?

The estimated repair cost for C054D is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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