AutoCodes – Generic – P1427

P1427 Code - Brake System Vacuum Pump Activation Short To Positive

Quick Answer

P1427 indicates Brake System Vacuum Pump Activation Short To Positive. Common causes include Faulty Brake System Vacuum Pump, Brake System Vacuum Pump harness is open or shorted, Brake System Vacuum Pump circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P1427 indicates Brake System Vacuum Pump Activation Short To Positive.
Common causes: Common causes include Faulty Brake System Vacuum Pump, Brake System Vacuum Pump harness is open or shorted, Brake System Vacuum Pump circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 15,896

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Aug 22, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code P1427 Description

OBDII Code P1427 - Brake System Vacuum Pump Activation Short To Positive - AutoCodes.com — P1427 Code - Brake System Vacuum Pump Activation Short To Positive

What does this mean?

What are the Possible Causes of the DTC P1427?

Faulty Brake System Vacuum Pump
Brake System Vacuum Pump harness is open or shorted
Brake System Vacuum Pump circuit poor electrical connection

How to Fix the DTC P1427?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1427 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P1427 code?

Need more information on how to fix the P1427 code? Get Access to Factory Service Manuals

Need Help with the Code?

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Information for Specific Makes

P1427 Audi — Brake System Vacuum Pump Activation Short To Positive
P1427 Volkswagen — Brake System Vacuum Pump Activation Short To Positive

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.