Where are NOx sensors located?

Where are NOx sensors located?

The NOx sensor is part of the NOx reduction aftertreatment system used in diesel vehicles with urea based SCR systems. The sensor located upstream of the SCR catalyst directly measures the engine-out NOx gas concentration, which helps determine the optimum amount of urea injection.

Are NOx and o2 sensors the same?

Both the oxygen sensor and the nox sensor are mounted on the exhaust pipe, and the sensors look similar. But nox sensor directly transmits the data to ECU,the nox sensor datta is more accurate,and in the future nox sensor will replace the oxygen sensor step by step.

Do gas engines have NOx sensors?

Commercial sensors were first introduced in the early 2000s on lean-burn, stratified charge gasoline passenger cars with NOx adsorbers, followed by diesel cars with NOx adsorbers and light- and heavy-duty diesel engines with urea-SCR aftertreatment.

Can I drive with faulty NOx sensor?

A bad knock sensor may also not let the engine accelerate properly while driving on the highway, and cause the vehicle to lose fuel mileage. Once the computer realizes the knock sensor is not working properly, your vehicle will most likely lose power.

Where are the NOx sensors on a diesel engine?

The assembly uses two NOx sensors: the first sensor (referred to as NOx sensor 1) is located near the turbo downpipe and measures engine out NOx. The second sensor (referred to as NOx sensor 2) measures NOx levels exiting the SCR catalyst.

What kind of cable does the NoX sensor kit use?

The wiring harness that is included with the USB NOx kit is a five foot cable that connects to the NOx Sensor Control Module and then splits into two cables for the USB-8473 module and an external power supply. The first cable connects to the USB-8473 with a female DB-9 connector.

What can cause a NoX sensor to short circuit?

Specific damage of OEM NOx sensor (short circuit: damage of power stage snubber diode or short circuit: damage of heating element of NOx sensor) can be the cause of this issue. Check fuse F06. If fuse is blown, check old NOx sensor for short circuit before replacing the fuse: measure resistance between Pin [1] and Pin [2].

What should I do if my NoX sensor is blown?

If 2EAE re-appears after NOx sensor replacement (F06 is blown repeatedly) – check wireset and all modules connected to this power wire. If test of power supply confirms presence of necessary voltage, connection of CAN should be performed. Disconnect NOx sensor and, using multimeter, using multimeter (connector/wireset) between Pin [3] and Pin [4].

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