P0153 Ford

Ford P0153 OBD-II Trouble Code Definition:

P0153 HO2S21 Sensor Circuit Slow Response

P0153 Ford OBD-II Trouble CodeDescription:

OBD Trouble Code P0153
O2 Sensor Circuit Slow Response
What does the code mean? OBD-ii 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 Sumptoms of OBD code P0153
You will likely not notice any drivability problems, although there may be symptoms.
Causes Causes of the OBD-II code 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
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