This Renault Master III with a Continental SID321 control unit was checked for AdBlue/SCR system faults. After diagnostics, the engine control software was changed. The video distinguishes this work from other faults recorded in the vehicle’s ABS and oil-level monitoring systems.

After the software changes, the engine was started and the control unit was checked again. No new engine-system faults were displayed, and there were no signs of limp mode. Separate ABS and oil-level sensor faults remained as independent repair issues unrelated to the AdBlue work.

A road test was planned at the end of the video, but its result is not shown. The confirmed outcome is therefore limited to the stationary diagnostic check, not a complete road test.