P0153 Oxygen Sensor Circuit Slow Response B2S1

Description and meaning of DTC p0153

This diagnostic trouble code (DTC) is a generic powertrain code, which means that it applies to OBD-II equipped vehicles. Although generic, the specific repair steps may vary depending on make/model. This involves the oxygen sensor upstream the catalytic converter on Bank2. Sensor #1 is the first sensor downstream from the engine. This code indicates the engine air fuel ratio is not being adjusted bythe oxygen sensor signal or the ECM as expected to do so, or not adjusted asoften as expected to do so once the engine is warmed or under normal engineuse.

p0153 diagnostic trouble code symptoms

You will likely not notice any drivability problems, although there may besymptoms.

DTC p0153 - possible causes

A code P0153 may mean that one or more of the following has happened:The oxygen sensor is faultyThe wiring to the sensor is broken / frayedThere is an exhaust leak

How to fix OBD-II diagnostic trouble code p0153

Things that may fix the problem include:Check and fix any exhaust leaksCheck for wiring problems (shorted, frayed wires)Check the frequency and amplitude of the oxygen sensor (advanced)Check for a deteriorating / contaminated oxygen sensor, replace if necessaryCheck for inlet air leaksCheck the MAF sensor for proper operationReplace the Bank 2 oxygen sensor upstream of the catalytic converter

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