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Volvo
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2004
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V40 Base
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Repair and Diagnosis
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Body & Frame
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Door Locks
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Guard Lock And Alarm (GLA) & Immobilizer Module (IMM) Diagnostic Trouble Codes
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IMM-121: Pin, Cannot Be Programmed (2000-2004)
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Cannot be programmed
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Fault-tracing information
Fault-tracing information
The fault is caused by temporary disruption of communication.