OBD Guide
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C119A

Vacuum Sensor Voltage

C119A is an OBD-II diagnostic trouble code meaning: Vacuum Sensor Voltage. Common causes: faulty vacuum sensor, open or short circuit in wiring harness. Estimated repair cost: $33–111.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$33–111 (est.)

Symptoms

  • Check Engine Light Is On
  • Unstable engine idling
  • Reduced engine power
  • Problems with the brake system (if the sensor is connected to the vacuum booster)

Causes

  • Faulty vacuum sensor
  • Open or short circuit in wiring harness
  • Poor contact in the sensor connector
  • ECU malfunction
  • Vacuum leak in the system

How to Fix

  1. Check the integrity of the sensor wiring harness
  2. Inspect the sensor connector for oxidation or damage.
  3. Measure the resistance and voltage of the sensor (compare with manufacturer’s standards)
  4. Check vacuum hoses for leaks
  5. Replace sensor if necessary
  6. Flash the ECU (if other reasons are excluded)

Related codes

C1189C1190P0106

FAQ

What does the C119A code mean?

C119A is an OBD-II diagnostic trouble code that indicates: Vacuum Sensor Voltage

What causes a C119A error code?

The most common causes of C119A include: Faulty vacuum sensor; Open or short circuit in wiring harness; Poor contact in the sensor connector; ECU malfunction.

How do I fix a C119A diagnostic trouble code?

To fix C119A: Check the integrity of the sensor wiring harness. Inspect the sensor connector for oxidation or damage.. Measure the resistance and voltage of the sensor (compare with manufacturer’s standards). For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C119A?

Limited driving only, diagnose soon

How much does it cost to fix C119A?

The estimated repair cost for C119A is $33–111. Actual cost depends on your vehicle, location, and labor rates.

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