The Bank 1 Sensor 1 is located on the side of the engine with cylinder #1 before the catalytic converter. The most frequent fix is to replace the sensor. It's apparently not hard to remove and screw in a new sensor, but the location of this one is a bear to get to. That means really difficult. One way to avoid the hassle is to take it to a mechanic who knows how and has the right tools.
Heated oxygen sensor heater circuit malfunction (bank 1, sensor 1): Open or short in heated oxygen sensor heater circuit Heated oxygen sensor heater malfunction (Haynes Repair Manual)
The oxygen sensor is "done". It should be replaced.
Newer oxygen sensors are heated for accuracy. If the heater element goes bad the oxygen sensor doesn't work and needs to be replaced. If you have an oxygen sensor heater malfunction, it just means that the oxygen sensor has failed.
Oxygen O2 sensor Heater Circuit Malfunction (Bank 1, Sensor 1) Should be drivers side closest to engine.
Heated Oxygen Sensor Heater Circuit Malfunction (Bank1 Sensor1) * DTC Detecting Condition # When the heater operates, heater current exceeds 2 A (2 trip detection logic) # Heater current of 0.2 A or less when the heater operates (2 trip detection logic) * Trouble Area # Open or short in heater circuit of heated oxygen sensor # Heated oxygen sensor heater # ECM HINT: * Bank 1 refers to the bank that includes cylinder No.1. * Sensor 1 refers to the sensor closer to the engine body. * Sensor 2 refers to the sensor farther away from the engine body. INSPECTION PROCEDURE HINT: Read freeze frame data using TOYOTA hand-held tester or OBD II scan tool. Because freeze frame records the engine conditions when the malfunction is detected, when troubleshooting it is useful for determining whether the vehicle was running or stopped, the engine warmed up or not, the air-fuel ratio lean or rich, etc. at the time of the malfunction.
it means that the heated circuit decreases time that is needed to enter. When the O2 heater reaches it's right temperature the oxygen sensor commmunicates by switching according to exygen content of the exhaust that surrounds it.
P0135 on Mitsubishi galant 2003 Definition: HO2S 11 Heater condition (Heated Oxygen Sensor Bank 1 Sensor 1) Explanation: The powertrain control module monitors the oxygen sensor heater. The computer has recognized a failure in this ciricuit. Probable Causes 1. -Oxygen sensor defective 2. -Poor connection at oxygen sensor 3. -Check circuit-fuse
The heater in the oxygen sensor has failed. Its a good idea to replace BOTH oxygen sensors at the same time. If one has failed the other won't be lasting very long.
Bank 2 sensor 2 refers to the oxygen sensor on the passenger side of the exhaust system and after the catalytic converter. heater circuit is the oxygen sensor or the wiring going to it, it is what is called a heated oxygen sensor. Google image search oxygen sensor and that is what it looks like, and they can be a bear to get out.
Bank 1 sensor 2 oxygen sensor heater malfunction.
You have one of three general problems in order of most to least likely.The O2 sensor is badThe wiring or connections have an issueThe computer is bad and not seeing the operation of the heater.
Oxygen sensor circuit slow response (Bank2, Sensor1). You have a fuel system problem or a bad computer or sensor.