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

HINT:

Sensor 1 refers to the sensor mounted in front of the Three-Way Catalytic Converter (TWC), located near the engine assembly.

Refer to DTC P0130 .

DTC DETECTION CONDITIONS AND TROUBLE AREA

DTC No.	DTC Detection Conditions	Trouble Areas
P0134	With warm engine, Heated Oxygen (HO2) sensor (sensor 1) output does not indicate rich (more than 0.45 V) even once when conditions (a), (b), (c), (d) and (e) continue for more than 50 seconds (1 trip detection logic): Engine speed: 1,400 rpm or more Vehicle speed: 25 mph (40 km/h) or more Throttle valve not fully closed 180 seconds or more after starting engine Engine coolant temperature more than 40°C (104°F)	Open or short in HO2 sensor (sensor 1) circuit HO2 sensor (sensor 1) HO2 sensor heater (sensor 1) EFI relay HO2 sensor heater and EFI relay circuits Air induction system Fuel pressure PCV hose connections PCV valve and hose Injector Gas leakage from exhaust system ECM

HINT:

If this DTC is set, check the output voltage of the HO2 sensor (bank 1 sensor 1) by selecting the following menu items on an intelligent tester: DIAGNOSIS / ENHANCED OBD II / DATA LIST / ALL. If using an OBD II scan tool, refer to the instruction information.