DTC P0134: Oxygen Sensor Circuit No Activity Detected (Bank 1 Sensor 1): Notes

WARNING: This page is about a different car, the 2003 Toyota Tacoma. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: This DTC is related to A/F sensor, although the caption is oxygen sensor.

NOTE: This DTC may be caused by the vehicle running out of fuel.

CAUTION: If Engine Control Module (ECM) replacement is instructed in following test, always ensure ECM connectors and ground circuits are okay. If either are defective, repair and repeat testing to confirm ECM malfunction.