Nov 15, 2022 · I am yet another 2014 Ecodiesel owner with the DEF tank level sensor failure. After much research I decided the best resolution was to search wreckers for a used tank from a 2014 …

Aug 4, 2025 · I'll look into the DEF cleaning option, need to vet that out a bit more. Having looked at the parts breakdown, I understand that the level sensor is a non-mechanical setup.

Mar 3, 2023 · U02A2 is directed at the DEF quality sensor, which is part of the all-in-one unit inside your DEF tank. The U02A3 is directed at the Particulate Matter Sensor module.

Jul 21, 2018 · Everything that I have read states that this code has three causes, 1) Over filling the DEF tank, 2) DEF frozen in the tank, and 3) DEF crystals obscuring the DEF level sensor.

There are five different messages which are displayed if the vehicle detects that the DEF system has been filled with a fluid other than DEF, has experienced component failures, or when tampering has …

Dec 30, 2022 · The DEF gauges are highly inaccurate. They read full when they are not then drop relatively quickly from there. If you drained 2.5 gallons I would expect it to show less than full though. …

Sep 10, 2022 · DEF is an aftertreatment, it can be turned off. Sensor is not part of the pump assembly. My DEF sensor/gauge was not working even though tank was full.

When the “Service DEF System See Dealer” message comes up on your dashboard, it means the vehicle has detected an issue with the DEF tank or system. This can be caused by a variety of …

Mar 13, 2025 · This guide will help you troubleshoot and repair your DEF sensor, restoring your vehicle’s performance. Whether it’s a clogged sensor or an electrical issue, we’ll cover the basics, making the …

Sep 21, 2024 · That unit is an all-in-one drop in unit that handles DEF heating, pumping, level reading, and quality sensing all in one. Those sending units can be purchased and installed independently of …