AutoCodes – Volkswagen – P1399 Volkswagen

P1399 Volkswagen Code - Engine RPM Signal TD Short To B+

Quick Answer

P1399 Volkswagen indicates Engine RPM Signal TD Short To B+. Common causes include Faulty Engine Speed Sensor, Engine Speed Sensor harness is open or shorted, Engine Speed Sensor 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: P1399 Volkswagen indicates Engine RPM Signal TD Short To B+.
Common causes: Common causes include Faulty Engine Speed Sensor, Engine Speed Sensor harness is open or shorted, Engine Speed Sensor 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 3,007

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 18, 2019

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code P1399 Volkswagen Description

OBDII Code P1399 Volkswagen - Engine RPM Signal TD Short To B+ - AutoCodes.com — P1399 Volkswagen Code - Engine RPM Signal TD Short To B+

What does this mean?

What are the Possible Causes of the DTC P1399 Volkswagen?

Faulty Engine Speed Sensor
Engine Speed Sensor harness is open or shorted
Engine Speed Sensor circuit poor electrical connection

How to Fix the DTC P1399 Volkswagen?

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 P1399 Volkswagen 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.

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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.