AutoCodes – Volkswagen – P1624 Volkswagen

P1624 Volkswagen Code - Malfunction Indicator Lamp Request Signal Active

Quick Answer

This Diagnostic Trouble Code (DTC) is stored in the Engine Control Module (ECM) when a fault code is detected. Common causes include Fault Codes stored in Transmission Control Module, Faulty Engine Control Module (ECM). 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
P1624 Volkswagen indicates Malfunction Indicator Lamp Request Signal Active.
Common causes
Common causes include Fault Codes stored in Transmission Control Module, Faulty Engine Control Module (ECM).
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 54,432
How popular is this code, among other codes? Medium
Table of contents Created and updated by William Orellana on Jul 12, 2020
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Code P1624 Volkswagen Description

This Diagnostic Trouble Code (DTC) is stored in the Engine Control Module (ECM) when a fault code is detected. This code will be stored when DTC is detected in the Transmission Control Module (TCM) and the malfunction indicator light signal is active. The TCM request the ECM turn Malfunction Indicator Lamp (MIL) ON.
OBDII Code P1624 Volkswagen - Malfunction Indicator Lamp Request Signal Active - AutoCodes.com
P1624 Volkswagen Code - Malfunction Indicator Lamp Request Signal Active

What are the Possible Causes of the DTC P1624 Volkswagen?

  • Fault Codes stored in Transmission Control Module
  • Faulty Engine Control Module (ECM)

How to Fix the DTC P1624 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 P1624 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.

Frequently Asked Questions about P1624 Volkswagen Code

1. What does the OBDII code P1624 mean in a Volkswagen?

P1624 indicates that the Malfunction Indicator Lamp (MIL) Request Signal is active, meaning another control module has detected an issue and requested the MIL to turn on.

2. What are the common symptoms of code P1624 in a Volkswagen?

The most common symptom is the activation of the Check Engine Light, but the vehicle may also experience reduced performance depending on the underlying issue.

3. What causes the P1624 code to appear?

The code is triggered when another module, such as the transmission control module (TCM) or ABS module, detects a fault and requests the engine control module (ECM) to turn on the MIL.

4. How is the P1624 code diagnosed?

A mechanic will use a scan tool to retrieve additional codes from other modules, as P1624 itself is a secondary code indicating a linked issue elsewhere.

5. Can the P1624 code cause drivability issues?

While P1624 itself may not directly cause drivability issues, the underlying problem in another system could affect vehicle performance.

6. How do you fix the P1624 code on a Volkswagen?

The repair involves addressing the root cause of the issue, which requires diagnosing and fixing the fault in the module that requested the MIL activation.

7. Can a faulty transmission cause the P1624 code?

Yes, a fault in the transmission, such as a failing sensor or solenoid, could trigger the TCM to request the MIL, resulting in the P1624 code.

8. Is it safe to drive with the P1624 code active?

It depends on the underlying issue. While P1624 itself is not critical, the root cause could lead to further damage or compromise safety if ignored.

9. Can clearing the P1624 code fix the problem?

Clearing the code will turn off the MIL temporarily, but the code will return if the underlying issue is not resolved.

10. What tools are needed to diagnose the P1624 code effectively?

A professional-grade diagnostic scan tool that can communicate with all vehicle modules is essential for identifying the source of the MIL request.

Discuss the causes and fixes for P1624 Volkswagen OBDII Code

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