Home Auto Repair P0133 Oxygen Sensor Circuit Slow Response (Bank1, Sensor1)

P0133 Oxygen Sensor Circuit Slow Response (Bank1, Sensor1)

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Technical Description
Oxygen Sensor Circuit Slow Response (Bank1, Sensor1)

What does that mean? This is considered a generic powertrain DTC (code). That means it’s definition is the same for all makes and models of OBD-II vehicles, however specific repair steps may vary depending on the vehicle. This trouble code involves the front oxygen sensor on Bank 1. 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 You will likely not notice any drivability problems, although there may be symptoms.