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Acura DTC

Acura DTC P0161

Manufacture

Acura DTC

Code

P0161

Definition

Front Secondary HO2S (Bank 2, Sensor 2) Heater Circuit Malfunction

Description

The front secondary HO2S heater output is 0.38 A or less, or 3.33 A or more, for at least 5 seconds when the heater is on. Engine running the battery voltage (IGP terminal of PCM) is 10.5-16 V, DTCs P0117, P0118 are not active. If the front secondary HO2S heater draws more or less than a specified amperage, the PCM detects a malfunction and a DTC is stored. NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot.

Cause

  • Poor connections or loose terminals at the front secondary HO2S (Sensor 2), the relay and the PCMOpen or Short circuit between the PCM and the front secondary HO2S (Sensor 2)Faulty PCM

_P0161  There are 0 products.