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BMW
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2012
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760Li
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Repair and Diagnosis
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Engine Performance
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System
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Self Diagnosis - N74 - Diagnostic Trouble Codes - DTC P2089 (BMW DTC 130001) Through DTC P144B (BMW DTC 193208)
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DTC P240A; BMW DTC 190504: DMTL, heating, activation: open circuit
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Service instruction
Service instruction
On E7X versions the power-supply voltage is from Terminal 30gz, which is controlled by the CAS. If the battery is severely discharged the CAS may deactivate this Terminal 30gz, leading to this diagnostic fault code entry.