Outlet NOx Sensor Replace: Volvo D13 & Mack MP8 Guide

Volvo D13 & Mack MP8 Engines Outlet NOx Sensor Replacement: Step by Step Guide

In this article, we’ll give you a detailed, step-by-step guide on how to replace or delete the Outlet NOx Sensor from the trucks having Volvo D13 and Mack MP8 Engines.

The procedure is pretty simple and same for both trucks with the Volvo and Mack engines.

There is a couple of instruments You can use to execute this procedure:

wrench
wire cutter
socket

Remove the side Fairing Panel of the Truck. (See Figure 1)

Mechanic beside a green Volvo truck with its hood tilted forward and side fairing panel open in a workshop. — Figure 1

Next You need to get under your truck. (See Figure 2)

Mechanic lying on a creeper beneath a Volvo truck beside the exposed aftertreatment compartment. — Figure 2

Remove the NOx sensor from the DPF Filter by means of a wrench. (See Figure 3)

Mechanic holding a wrench beside a NOx sensor threaded into an exhaust elbow, with the sensor fitting circled in yellow. — Figure 3

Cut the NOx sensor wire ties. (See Figure 4)

Gloved hands holding a NOx sensor cable and using cutters on a cable tie highlighted with a yellow circle. — Figure 4

Disconnect the NOx sensor module connector by pressing on the tab to get the connector out. (See Figure 5)

Gloved hand releasing the electrical connector latch on a NOx sensor module mounted to the truck frame. — Figure 5

Using the Socket remove the module mouting bolts located behind the inner fender. (See Figure 6 and 7)

Ratchet positioned over an upper NOx sensor module mounting fastener while a gloved hand steadies the nearby connector. — Figure 6

Gloved hand holding an unbolted NOx sensor module away from its mounting plate, with the harness plug disconnected. — Figure 7

Mount the new NOx sensor module and connect an electrical connector.
Secure the bolts.
Slightly pull back on the connector to make sure it is securely connected. (See Figure 8)

Gloved hand aligning an electrical plug with an orange locking tab beside a mounted NOx sensor module. — Figure 8

Install the new NOx sensor into the DPF filter and tighten it using wrench. (See Figure 9)

Gloved hand positioning a replacement NOx sensor probe beside the threaded port in an exhaust elbow. — Figure 9

Using zipties secure the NOx sensor wire to the mounting tabs.
Make sure the NOx sensor wires will not rub on any sharp objects or touch the hot exhaust.
Install the trucks fairing panel back. (See Figure 10)

Volvo D13 & Mack MP8 Engines Outlet NOx Sensor Replacement: Step by Step Guide

Review

Related Articles