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19 Ιαν 2021 · How do you diagnose a DEF pump problem? I am going to show you how to diagnose a faulty DEF pump with a scope. This method is much faster than doing all the resistance checks the manufacturer wants you to do on the harness, according to service information.
11 Νοε 2023 · DEF Level Warning: A light or message indicating that the level is low, which could mean a leak or consumption issue. Check Engine Light: While this can indicate various issues, it can also be triggered by a malfunction in the system.
To comply with cutting down emission levels, diesel engine manufacturers as a whole decided to implement a selective catalytic reduction (SCR) system, which includes an SCR catalyst, a pump, a tank, lines, an injector, and a synthetic, non-toxic diesel exhaust fluid (DEF).
Diesel exhaust fluid (DEF; also known as AUS 32 and sometimes marketed as AdBlue[3]) is a liquid used to reduce the amount of air pollution created by a diesel engine. Specifically, DEF is an aqueous urea solution made with 32.5% urea and 67.5% deionized water.
31 Ιαν 2024 · DEF pump – check for power at the pump harness. If there is no power, test the fuse, relays, and voltage at the ECU pins. If power is present, the pump may need to be replaced.
26 Απρ 2023 · Diesel exhaust fluid (DEF) is a non-hazardous solution used within a selective catalytic reduction (SCR) system to break down harmful pollutants (NOx) generated by a diesel engine. DEF is 32.5% urea, or aqueous ammonia solution, and 67.5% deionized water.
31 Αυγ 2023 · Common DEF issues include contamination, freezing in cold temperatures, quality concerns, incorrect DEF levels, pump and injector problems, and tampering. These issues can lead to warning lights, reduced engine performance, and increased emissions.
