P0153

DTC P0153 Upstream Heated Oxygen Sensor Bank 2 Slow Response/No Activity Detected

Wiring Diagram:

Circuit Description

The engine control module (ECM) supplies a voltage of about 0.45 V between the ECM terminals 1 and 26. The oxygen (O2) sensor varies the voltage within a range of about 1 V if the exhaust is rich, down to about 0.1 V if the exhaust is lean. The O2 sensor is like an open circuit and produces no voltage when it is below 360 °C (600 °F). An open O2 sensor circuit or a cold O2 sensor causes "open loop" operation.

Conditions for Setting the DTC

- The engine controls system is in closed loop.
- Engine Coolant Temperature is higher than 45 °C (113 °F).
- The mass airflow (MAF) is between 100 mg/stroke and 300mg/stroke.
- The vehicle speed is between 5 km/h (3.1 mph) and 170 km/h (105.6 mph).
- The compensated catalyst temperature is between 500 °C (932 °F) and 900 °C (1652 °F).
- The EVAP canister purge valve is not in close state.
- No relevant DTCs are set.
- The average ratio is greater than 1 during 100 lambda regulation cycles.
- The fuel trim lambda delay is greater than 639.921 msec.

Action Taken When the DTC Sets

- The Malfunction Indicator Lamp (MIL) will illuminate.
- The ECM will record operating conditions at the time the diagnostic fails. This information will be stored in the Freeze Frame and Failure Records buffers.
- A history DTC is stored.

Conditions for Clearing the MIL/DTC

- The MIL will turn off at the end of three (3) consecutive validation cycles in which the diagnostic runs without a fault.
- A history DTC will clear after 40 warm up cycles without a fault.
- DTC(s) can be cleared by using the scan tool.

Diagnostic Aids

Normal scan tool voltage varies between 0.15 to 8.5 mV while in Closed Loop. If DTC P0153 is intermittent, refer to Intermittents. Intermittents

Step 1 - 10:

Step 11 - 13:

DTC P0153 - Upstream Heated Oxygen Sensor Bank 2 Slow Response/No Activity Detected