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Home >> Mercedes Benz >> 2001 >> ML430 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P0153: Left O2 Sensor Upstream TWC (G3/3) Aging Of O2 Sensor Too Slow >> DTC Description
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DTC Description

NOTE: The period of the O2 sensor before TWC is too long; O2 sensor after TWC does not continue to be monitored. Correction value of O2 sensor before TWC exceeded; O2 sensor after TWC continues to be monitored. If faults for the O2 sensor before and after TWC are recognized at the same time; usually only the O2 sensor after the TWC is defective.