Compression Ignition Addict
Join Date: Aug 2013
Thanked 84 Times in 84 Posts
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It says how to fix it:
Connect the Ford Integrated Diagnostic System (IDS) service tool or equivalent scan tool to the data link connector (DLC). Check for DTCs. Is P203B the only DTC stored in the PCM memory?
Yes – proceed to Step 2.
No – this article does not apply. Refer to the Powertrain Control/Emissions Diagnosis (PC/ED) manual for normal diagnostics.
Replace the reductant tank. Refer to Workshop Manual (WSM), Section 303-08.
Using IDS, perform the selective catalytic reduction (SCR) system refill activation by selecting toolbox> powertrain> service functions> SCR system> SCR system refill activation.
So...a dealer trip, or replace yourself.