FixVault
Home
›
Mazda
›
2002
›
MX-5 Miata Base, Standard
›
Repair and Diagnosis
›
Engine Performance
›
System
›
Engine Controls - Self-Diagnostics
›
Diagnostic Tests
›
DTC P1604: Code Word Unregistered In Pcm
›
Detection Condition
Detection Condition
DTC is set when immobilizer unit code word is not registered in Powertrain Control Module (PCM).