AutoCodes – Volkswagen – P1143 Volkswagen

P1143 Volkswagen Code - Load Calculation Cross Check Upper Limit Exceeded

Quick Answer

The Engine Control Module (ECM) monitors the Load Calculation Cross Check Range. Common causes include Vacuum leaks, Faulty Mass Air Flow (MAF) Sensor, Mass Air Flow Sensor harness is open or shorted. 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: P1143 Volkswagen indicates Load Calculation Cross Check Upper Limit Exceeded.
Common causes: Common causes include Vacuum leaks, Faulty Mass Air Flow (MAF) Sensor, Mass Air Flow Sensor harness is open or shorted.
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 21,029

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 Jul 19, 2021

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code P1143 Volkswagen Description

The Engine Control Module (ECM) monitors the Load Calculation Cross Check Range. The ECM sets the OBDII code when the Load Calculation Cross Check Range is not to factory specifications.

OBDII Code P1143 Volkswagen - Load Calculation Cross Check Upper Limit Exceeded - AutoCodes.com — P1143 Volkswagen Code - Load Calculation Cross Check Upper Limit Exceeded

What does this mean?

What are the Possible Causes of the DTC P1143 Volkswagen?

Vacuum leaks
Faulty Mass Air Flow (MAF) Sensor
Mass Air Flow Sensor harness is open or shorted
Mass Air Flow Sensor circuit poor electrical connection

How to Fix the DTC P1143 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 P1143 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.