EcoDieselJolene
Member
- Jan 16, 2022
- 58
- 10
- Truck Year
- 2017
Hey y'all. I just got my new to me 2017 Ram 1500 Big Horn EcoDiesel, with 60,000 miles, about 3 or 4 weeks ago (after my '16 1500 Pentastar got t-boned and totaled).
So far, I dig the new gal, but the diesel intimidates me a little. I've never had one, but I'm willing to learn.
Yesterday (~30° F), after driving for about a mile, I got a ding and the CEL. I went home and read the code: P0198 (oil temp high). I drove it around for a few, and all seemed fine, and the oil temp was ok, so we ran our errands (oil never got above 205). The truck sat for about an hour and a half. When I got back in, it started fine and the CEL was gone, but there was a brief 'service shifter' message. On the way home, I monitored the temperature and it stayed pretty low. All of a sudden, I got a ding and the CEL. The temp shot up well over 300 degrees, then back down to normal, then up and back down. Then it was stable.
My thoughts are a bad oil temperature sensor.
That evening, after the truck sat for a few hours, I decided to check it out again. I fired it up, I had the CEL, got the 'service shifter', and a 'check electronic braking system' message, and the traction control light. Geez.
I scanned it again and got the P0198 and a U0121 (something about ABS, I think).
My thoughts are now leaning towards this being an electrical gremlin, wiring harness issue, or something that is challenging to diagnose.
This morning (27 degrees), I fired it up. No messages, no Traction Control light, but did have the CEL.
Other than the barrage of lights, the truck seems fine. I did find a shop that'll see diesels (harder than I thought) and they're going to run a thorough diagnostic today (hopefully).
Have any of you fine folks encountered such a thing? My '16 ran flawlessly for the 40ish thousand miles I put on it. This one was running great... I'm perplexed.
If anyone has some advice or experience with these symptoms, I'd love to know the solution.
So far, I dig the new gal, but the diesel intimidates me a little. I've never had one, but I'm willing to learn.
Yesterday (~30° F), after driving for about a mile, I got a ding and the CEL. I went home and read the code: P0198 (oil temp high). I drove it around for a few, and all seemed fine, and the oil temp was ok, so we ran our errands (oil never got above 205). The truck sat for about an hour and a half. When I got back in, it started fine and the CEL was gone, but there was a brief 'service shifter' message. On the way home, I monitored the temperature and it stayed pretty low. All of a sudden, I got a ding and the CEL. The temp shot up well over 300 degrees, then back down to normal, then up and back down. Then it was stable.
My thoughts are a bad oil temperature sensor.
That evening, after the truck sat for a few hours, I decided to check it out again. I fired it up, I had the CEL, got the 'service shifter', and a 'check electronic braking system' message, and the traction control light. Geez.
I scanned it again and got the P0198 and a U0121 (something about ABS, I think).
My thoughts are now leaning towards this being an electrical gremlin, wiring harness issue, or something that is challenging to diagnose.
This morning (27 degrees), I fired it up. No messages, no Traction Control light, but did have the CEL.
Other than the barrage of lights, the truck seems fine. I did find a shop that'll see diesels (harder than I thought) and they're going to run a thorough diagnostic today (hopefully).
Have any of you fine folks encountered such a thing? My '16 ran flawlessly for the 40ish thousand miles I put on it. This one was running great... I'm perplexed.
If anyone has some advice or experience with these symptoms, I'd love to know the solution.
