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Could you please tell me what does code P1603 Ctrl. module faulty mean

Vehicle: 2012 VW Polo 1.4 Trendline
asked by (101 points)

1 Answer

Hi there,

This means you have a faulty ECM or possibly a wiring issue to the ECM. Here is some more info for you.

P1603 VOLKSWAGEN - Engine Control Module Defective

Read more: https://www.autocodes.com/p1603_volkswagen.html

answered by (8.9k points)

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