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OBD CODES

CAR OBD CODES



OBD/DTC Search, e.g.P0153

CAR OBD CODES P0153

P0153 OBD Code Definition:
P0153 HO2S21 Sensor Circuit Slow Response
P0153 OBD Code Description:

OBD Code P0153

O2 Sensor Circuit Slow Response

What’s mean?

OBD2 Code P0153 Definition:
This involves the oxygen sensor upstream the catalytic converter on Bank 2. This code indicates the engine air fuel ratio is not being adjusted by the oxygen sensor signal or the ECM as expected to do so, or not adjusted as often as expected to do so once the engine is warmed or under normal engine use. Symptoms

Possible sumptoms of P0153
You will likely not notice any drivability problems, although there may be symptoms. Possible Causes

Possible causes of P0153
A code P0153 may mean that one or more of the following has happened: The oxygen sensor is faulty The wiring to the sensor is broken / frayed There is an exhaust leak Possible Solutions

Things that may fix the problem include: Check and fix any exhaust leaks Check 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 necessary Check for inlet air leaks Check the MAF sensor for proper operation Replace the Bank 2 oxygen sensor upstream of the catalytic converter
Note: The information on the P0153 error code is purely informative, if you need more useful information, please consult your technician.

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