How do I reset my exhaust fluid?

Mix one part vinegar with three parts water and pour it into the DEF tank. Then, run the truck for about 30 minutes to allow the solution to reach the pump. After that, drain the solution out of the tank and refill it with fresh DEF fluid.

What causes DEF system failure?

Dirt / Metal Contamination: Contaminated DEF can cause abrasion of the DEF pump. Dirt, rust or tank scale can occur with improper of DEF storage or handling (e.g. res-using disposable DEF containers). UREA Concentration (Dilution): Diluted DEF (too much water) reduces its NOx neutralization effectiveness.

What happens if you run out of DPF fluid?

If the truck is allowed to run out of DEF the engine’s power is reduced, a solid red warning will be displayed and the vehicle speed will be limited to 5 mph until the DEF tank is refilled.

Where is the DEF sensor located?

A DEF quality sensor is mounted on the side of the DEF tank. This sensor detects the Urea concentration in the DEF to confirm it is acceptable for effective dosing (approximately 32.5% Urea).

What does it mean when the DEF light is flashing?

A flashing/blinking DEF indicator light means that your DEF level is critically low. That means drop whatever you’re doing and refill it. If you continue on ignoring that indication, the consequences could be dire. So, refill the DEF tank as soon as possible.

How do you check diesel exhaust fluid?

Field Testing

  1. Visually inspect DEF for color and clarity.
  2. Do a “smell test”.
  3. Inspect exhaust piping and DEF injectors for presence of crystallization.
  4. Use a handheld DEF refractometer to measure the concentration specifications of the fluid to ensure 32.5% of the fluid is urea.

What does service diesel exhaust fluid mean?

Service Exhaust Fluid System (Tamper) – Displays when a Diagnostic Trouble Code (DTC) sets related to the DEF system that is interpreted as tampering with the system. Exhaust Fluid Range X MI (KM) – Displays when the DEF tank has a range of 1,000 miles (1,609 km) or less remaining.

How much does it cost to replace a DEF sensor?

Ongoing shortages of replacement parts for failed diesel exhaust fluid quality sensors are believed to be causing thousands of trucks nationwide to be disabled and parked. The sensors, which measure the quality and level of diesel exhaust fluid (DEF) in the tank, normally retail for roughly $300.

Can I put water instead of DEF fluid?

Subject: RE: Anyone replace DEF with water? Water won’t hurt the system but it will de-rate you pretty quick. ECM compares NOx values pre/post, if conversion is low it will start throwing codes and will eventually derate.

Can I drive without DEF fluid?

All told, DEF is just as important to your vehicle as fuel, coolant, oil and all the other fluids you regularly check and replace. Your machine will not function without DEF, and you can face serious consequences from letting the DEF tank run dry.