![]() ![]() Bank 2 means it is at the engine side with cylinder numbers 2, 4, 6, 8, etc. Where is the Bank 2 Sensor 2 Located?īank 2 Sensor 2 is the second sensor on the engine’s exhaust pipe (Downstream) on Bank 2, usually behind the catalytic converter. Bank 2 means it is at the side of the engine with cylinder numbers 2, 4, 6, 8, etc. Where is the Bank 2 Sensor 1 Located?īank 2 Sensor 1 is the first sensor closest to the engine (Upstream) on Bank 2. Bank 1 means it is at the engine side with cylinder numbers 1, 3, 5, 7, etc. Where is the Bank 1 Sensor 2 Located?īank 1 Sensor 2 is the second sensor on the engine’s exhaust pipe (Downstream) on Bank 1, usually behind the catalytic converter. Bank 1 means it is at the side of the engine with cylinder numbers 1, 3, 5, 7, etc. ![]() So to answer most of the questions people have about different banks and sensors, we’re going to summarize the different O2 sensor locations here: Where is the Bank 1 Sensor 1 Located?īank 1 Sensor 1 is the first sensor closest to the engine (Upstream) on Bank 1. V8 Car Engine – What’s the difference? What is Sensor 1 & 2?Īll the information about different banks and sensor locations can be confusing for most people, but it’s actually quite logical if you just know the basics. Bank 2 is the side with cylinder number 2 (Cylinders 2 – 4 – 6 – 8 etc.).Bank 1 is the side with cylinder number 1 (Cylinders 1 – 3 – 5 – 7 etc.).We drive on different sides globally, so it’s just confusing and misleading to guess which side bank 1 or bank 2 is on. You can’t simplify it and say that bank 1 is on the driver’s side or vice versa, because different engines can have cylinder 1 on different sides. The side nearest the front is not the front of the engine. The front of the engine is the part where the crankshaft pulley is. You can also try to find any stamps on the cylinder block or head for any cylinder numbers. The easiest way to discover the right cylinder bank is to check your car’s repair manual. Most commonly, Bank 1 is towards the front of the car if it has a transverse engine. Bank 2?īank 1 and bank 2 simply refer to either side of the engine. If the voltage signal is negative, the multimeter probes have been connected in the opposite sense, so the negative probe is connected to the signal wire, while the positive probe is connected to earth.Where is the Bank 2 Sensor 2 Located? What is Bank 1 vs. If the voltage signal is positive, this indicates that the positive multimeter probe is connected to the signal wire and negative probe is connected to earth. Within a minute, the sensor should register a voltage in the 0-1 V range. Heat up the sensor's tip with the premix flame. To test, set the multimeter to voltage mode and attach its probes to the two non-heater wires, noting which probe is negative and which is positive. However, this does require the sensor to be heated up to operating temperature. The O2 sensor signal gives an indication of oxygen content sensed by the probe by sending an induced voltage that corresponds to the level of oxygen detected. Note down which two wires correspond to the heater circuit and proceed to Test 2. The two wires which register a resistance reading are the heater wires the other two will show up as an open circuit or infinite resistance.Īs the O2 heater is resistor-based, polarity is not a concern here. To test, set the multimeter to resistance mode and use it to probe and figure out which wires register a resistance (usually 4-6 Ω). These wires serve to heat up the O2 sensor to bring it up to operating temperature via a resistance-based heating element. With nothing more than a decent multimeter and premix flame (blowtorch or gas stove), a two-test sequence can reveal the identity of each wire, assuming the O2 sensor is fully-functional: No, you don't have to rely on wire colors to figure out what's what. ![]()
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