Test Diesel Exhaust Fluid (DEF) Pump
Emissions System
A diagnostic test of the pump that delivers diesel exhaust fluid (DEF—a liquid that reduces harmful emissions in diesel engines) to the injection nozzles. A failed pump prevents DEF injection, causing emission system warnings and potential engine derate.
Estimated Cost
$150–$350🔒
Parts + labor, based on the parts this service typically requires. Not specific to your vehicle or region — this spans all vehicles, all regions, and all part grades, so treat it as a rough ballpark rather than a quote.