Circuit Description

WARNING: This page is about a different car, the 2004 Toyota Corolla. However, it is still accessible from the selected car via links, so may be relevant.

Refer to DTC P0130 .

DTC DETECTION CONDITION

DTC No.	DTC Detecting Condition	Trouble Area
P0134	After engine is warmed up, heated oxygen sensor (bank 1 sensor 1) output does not indicate RICH (greater than 0.45 V) even once when conditions (a), (b), (c), (d) and (e) continue for more than 65 seconds (1 trip detection logic): Engine speed: 1,400 rpm or more Vehicle speed: 24.8 mph (40 km/h) or more Throttle valve is not fully closed 180 seconds or more after starting engine Engine coolant temperature is more than 40°C (104°F)	Open or short in heated oxygen sensor (bank 1 sensor 1) circuit Heated oxygen sensor (bank 1 sensor 1) Heated oxygen sensor heater (bank 1 sensor 1) EFI relay Air induction system Fuel pressure PCV hose connection PCV valve and hose Injector Gas leakage in exhaust system PCV piping ECM

HINT:

After confirming DTC P0134, check the output voltage of the heated oxygen sensor (bank 1 sensor 1) in the "DIAGNOSIS / ENHANCED OBD II / DATA LIST / ALL" using the hand-held tester or the OBD II scan tool. If the output voltage of the heated oxygen sensor is always less than 0.1 V, the sensor circuit may be open or short.