Question

2013 HINO 238 with engine code P204F. My check engine light comes on but does not stay on and periodically comes on and off throughout my travels.

Answer 1

Here are the possible causes:

• Restricted reductant pressure line
• Restricted reductant filter

P204F Code - Reductant System Performance Bank 1
Read more: https://www.autocodes.com/p204f.html