P0153 - O2 SENSOR CIRCUIT SLOW RESPONSE (BANK 2 SENSOR 1)

The diagnostic code P0153 OBD2 indicates that the air/fuel ratio is not being adjusted correctly by the Oxygen Sensor O2 or by the ECM (Engine Control module), in the same way it may not respond to what is expected or that when the vehicle takes the normal temperature, it does not adjust to the expected frequency.

The Oxygen Sensor O2 is responsible for analyzing the oxygen in the atmosphere, the air that enters, must do so through the back of the sensor, ie between the wires. In situations where the sensor is contaminated by oil, there will be no airflow inside the sensor and so there are faults.

• Turn on the service light on the Check Engine
• High fuel consumption.

A code P0153 can be generated by one or more of the following problems:

• The Oxygen Sensor may be dirty.
• The sensor wires may be damaged or worn.
• Oxygen Sensor may be defective.
• Somewhere in the exhaust pipe, there may be a hole.
• Fuel type is not appropriate.
• PCM (Powertrain Control Module) may be defective.

To fix DTC code P0153 you can review the following components:

• Check the oxygen sensor O2 and make sure that it is not contaminated, in case it is, you can clean it.
• Examine the cables and connectors of the circuit, verify that they are not worn, or cause a short circuit. If necessary, repair or replace them.
• Check the frequency and amplitude of the Oxygen Sensor.
• Make sure there are no intake air leaks.
• Check the MAF (Mass air flow) sensor and make sure it works properly.
• You can replace the O2 Oxygen Sensor.