Dodge Ram 3500 Diesel (2002) with P0117, P1698, and P0380 Code - Causes and Solutions
I'm looking for help diagnosing three trouble codes: P0117, P1698, and P0380 on a 2002 Dodge Ram 3500 Diesel (4x4). This truck is not mine, so I don't have access to it for inspection. While I understand what each code means technically, I'm unable to find detailed explanations or common causes for these specific codes in existing forums. Many posts on this site provide clear symptom-based solutions, but my codes aren't well covered. Any insights or troubleshooting steps would be greatly appreciated. Thanks in advance for your help.