Audi P1624: MIL Requested Signature Active

Is your scanner showing Audi P1624?
No worries. We'll show you what it means and how to deal with it.

Presented by
Randy Worner

Audi P1624: MIL Requested Signature Active

OVERVIEW
Severity
:
High
DIY Difficulty Level
:
Advanced
Repair Cost
:
$800-$1500
Can I Still Drive?
:
No

What Does The Audi P1624 Code Mean?

This code indicates the condition that ignition is on, the ECM detected a control module malfunction. To achieve optimal anti-theft protection for the vehicle, an anti-theft immobilizer is installed. The anti-theft immobilizer is a system for enabling and locking the Engine Control Module (ECM).

What Are The Potential Causes Of The Audi P1624 Code?

Below are some potential causes of this DTC:

  • (If ECM was replaced) ECM ID not the same as the replaced unit
  • ECM has failed
  • Voltage supply for Engine Control Module (ECM) has shorted

Recommended Parts

Below are some recommended auto parts to help you address the trouble code affecting your vehicle and get it running smoothly again:

>>> Twippo 372Pcs Waterproof Wire Connectors Kit
>>> Audi Engine Control Module

Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!

Reference Sources

Audi A4 Avant 95-01 Service Repair Manual, page 60.

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