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Home >> Chevrolet >> 2002 >> Impala LS >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Self-Diagnostics - 3.8L >> Diagnostic Tests >> DTC P1640: Output Driver Module Circuit No. 1 >> Conditions For Setting DTC
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Conditions For Setting DTC

DTC sets when ODM has detected a voltage more than 33 volts or excessive current is detected on any circuit to ODM for 30 seconds.