DTC P0134: Heated Oxygen Sensor Circuit No Activity Detected (Sensor 1): Description

The ECM (M/T) or PCM (A/T) effects air/fuel ratio feedback control in accordance with the signals from the heated oxygen sensor (front). If the heated oxygen sensor (front) has deteriorated, corrections will be made by the heated oxygen sensor (rear). DTC P0134 becomes stored in memory if a failure is detected in the above air/fuel ratio feedback control system.