AutoCodes – Generic – P1424

P1424 Code - Mass Or Volume Air Flow Too High

Quick Answer

Depending on engine speed, valve-lift, inlet camshaft position, outlet camshaft position, and manifold pressure an air mass flow into the cylinder is calculated. Common causes include Faulty Mass Air Flow Sensor, Vacuum leak induction system, 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: P1424 indicates Mass Or Volume Air Flow Too High.
Common causes: Common causes include Faulty Mass Air Flow Sensor, Vacuum leak induction system, 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 19,153

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 11, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code P1424 Description

Depending on engine speed, valve-lift, inlet camshaft position, outlet camshaft position, and manifold pressure an air mass flow into the cylinder is calculated. There is also a correction of the calculated air mass flow depending on intake air temperature, coolant temperature, and ambient pressure. The ratio between the measured air mass flow and the calculated air mass flow must be between adjustable MIN/MAX-values. If the MIN/MAX thresholds are exceeded, a time counter is incremented. After this counter reaches the threshold within one diagnosis cycle, an air mass flow meter malfunction is detected. The Diagnostic Trouble Code (DTC) sets when the Mass Air Flow Sensor signal value is too high.

OBDII Code P1424 - Mass Or Volume Air Flow Too High - AutoCodes.com — P1424 Code - Mass Or Volume Air Flow Too High

What does this mean?

What are the Possible Causes of the DTC P1424?

Faulty Mass Air Flow Sensor
Vacuum leak induction system
Mass Air Flow Sensor harness is open or shorted
Mass Air Flow Sensor circuit poor electrical connection

How to Fix the DTC P1424?

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 P1424 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 P1424 code?

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Need Help with the Code?

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Information for Specific Makes

P1424 Audi — Secondary Air Injection System Bank 1 Leak Detected
P1424 BMW — Mass Or Volume Air Flow Too High
P1424 Buick — Exhaust Gas Recirculation Motor Overtemperature
P1424 Cadillac — Exhaust Gas Recirculation Motor Overtemperature
P1424 Chevrolet — Exhaust Gas Recirculation Motor Overtemperature
P1424 GMC — Exhaust Gas Recirculation Motor Overtemperature
P1424 MINI — Mass Or Volume Air Flow Too High
P1424 Suzuki — EVAP System Leak Detect Pump Flow High/Low
P1424 Volkswagen — Secondary Air Injection System Bank 1 Leak Detected

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.