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Acura DTC

Acura DTC P0140

Manufacture

Acura DTC

Code

P0140

Definition

HO2S-12 (Bank 1 Sensor 2) Insufficient Activity Detected

Description

DTC P0106, P0107, P0108, P0112, P0113, P0117, P0118, P0121, P0122, P0123, P0171, P0172 and P0300, P0301-306 not set, system voltage from 11-16v, engine runtime over 40 seconds, then after the PCM determined the Oxygen Sensor Heater test passed, it detecte

Cause

  • Exhaust leak present in exhaust manifold or exhaust pipesHO2S element has fuel contamination or has deterioratedHO2S signal circuit or the ground circuit has high resistanceHO2S heater element has failed, or the heater circuit is open

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