LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Volvo >> 2011 >> C30 R-Design, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control Module (ECM) Diagnostic Trouble Codes - 6 Of 8 >> ECM-7100: Immobilizer Communication. Faulty Signal (B5254T3; 2007-2008) >> Faulty Signal >> Information >> Overview
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Faulty Signal: Information: Overview

The immobilizer function is integrated in the central electronic module (CEM).

This diagnostic trouble code (DTC) indicates that the immobilizer code does not match between the engine control module (ECM) and the central electronic module (CEM). This may be because:

NOTE:

A programmed engine control module (ECM) or central electronic module (CEM) cannot be moved from one vehicle to another.

HINT: Reading diagnostic trouble codes (DTCs) in the central electronic module (CEM) 

Other information