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Volvo
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2004
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S40 LSE
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Repair and Diagnosis
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Transmission
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Automatic Trans
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Transmission Control Module (TCM) Diagnostic Trouble Codes - 2 Of 2 (644 Body)
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TCM-0121: Control Module. Internal Fault (Aw55-50/51SN; 2001-2004)
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Internal fault
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Fault-tracing information
Fault-tracing information
The control module has previously registered a fault.
No further fault-tracing is required.