From there, production grew steadily and the Oxygen Sensor became an essential tool for fuel efficiency and the reduction of CO2 emissions.
Measuring O2 Sensor Signals
To date, Bosch has produced 1 billion Oxygen Sensors. It took 32 years — from to — to reach the production record of million pieces, but only eight years — from to — to double the production figures to 1 billion sensors. Bosch Oxygen Sensors continue to lead the market with their high-quality reputation; an attribute that has defined Bosch since its inception.
Bosch tests all oxygen sensors it manufactures by subjecting each of them to a 1, degree Celsius functional test and a leak test to ensure environmental and functional robustness.
Oxygen sensors have been standard equipment on almost all passenger cars and light trucks with gasoline engines since Oxygen sensors are normally located in the exhaust system before the catalytic converter to measure exhaust emissions as they come from the engine combustion chambers. In with the federal mandated use of on-board-diagnostic systems OBDII , vehicles also require additional oxygen sensors after the catalytic converter, to ensure that the converter is operating properly.
Bosch has created an aftermarket universal heated oxygen sensor program. These sensors meet OEM operating requirements and have a patented connector system easing installation.
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With the below, you can enable or disable different types of cookies: By looking at a wiring diagram, here provided by Mitchell 1 ProDemand, we can by simply matching colors figure out which wires belong to the oxygen sensor heater circuit. One of the most common oxygen sensor DTCs a technician finds is related to oxygen sensor heater circuits.
Many shops just throw a sensor at the problem, and more times than not they are right. However, if the technician wants to diagnose the problem correctly something that may be necessary if the vehicle is a comeback , it is not difficult to do if one follows proper procedure.
First, the technician needs to know what he is looking at and to do this he will need an information system. By looking at the wiring diagrams see Figures 5 and 6 for wiring diagrams provided by Mitchell 1 ProDemand , we can figure out which wires belong to the oxygen sensor heater circuit by simply matching wire colors. In Chrysler vehicles, four wire oxygen sensor heater circuits tend to be powered by the PCM instead of grounded they are grounded to the chassis.
On Mitchell 1, the heater circuit appears as a line then bends back and forth like a tributary in the picture of the sensor.
Universal Oxygen (O2) Sensors | Bosch Auto Parts
Knowing this, the technician can quickly look right at the oxygen sensor and know which wires are for the heater circuit without having to look at another diagram such as that shown in Figure 6. Now that one knows the right wire, it is simple enough to check power right to the sensor to make sure the PCM is actually issuing the command. Refer to Figure 7: Here, on a different vehicle, the technician is checking to see if 5 V can be measured at the heater circuit wire.
If the technician is actually getting power, he can then place an amp clamp on the wire and see if there is any amperage indicative of the heater circuit working.
No, you don't have to rely on wire colors to figure out what's what.
If not, the heater in the sensor itself is not working. Here, on a different vehicle, the tech is checking to see if 5 V can be measured at the heater circuit wire. If the technician does not find power going to the sensor, and if a broken wire cannot be found easily, it is best to go straight to the PCM and find the wire related to the oxygen sensor heater.