P1604 Fault Code
You can find information about the P1604 fault code on this page.
BE WARNED! This particular code can mean a different thing depending on what make the car is, check below.
Manufacturer-Specific Meanings
![Audi Logo](https://faultcodes.co/wp-content/uploads/2022/08/audi-logo.jpeg)
Audi P1604
"Internal Control"
![BMW Logo](https://faultcodes.co/wp-content/uploads/2022/08/bmw-logo.jpeg)
BMW P1604
"Control Module Self Test, Speed Monitoring"
![Chrysler Logo](https://faultcodes.co/wp-content/uploads/2022/08/chrysler-logo-1.jpeg)
Chrysler P1604
"Immobilizer System Fault"
Looking To Fix This Yourself?
By using a workshop/repair manual you could diagnose and even fix this issue yourself.
You can find a collection of free manuals containing loads of information specific to your car on our partner site.
View Workshop/Repair/Service Manuals ยป![Workshop Manual Icon](https://faultcodes.co/wp-content/uploads/2022/09/workshop-manual-icon.png)
Popular Fault Codes
These are the most popular fault codes that people are searching for.