I have a 1998 dodge ram 1500 van. Several weeks ago (maybe 6) I parked it, hadn't had any issues, went to go somewhere last night, it turned over ok, tried to start but coughed and sputtered a bit, and finally died. We tried that a few times, sometimes it would stay "running" longer at times than others. Let it sit over night, and this morning it will still turn over strong but will not start at all. I get code P0545, egt sensor circuit low bank 1 sensor 1. I recently moved and haven't found my repair manual yet. It would help a lot if someone could explain to me where these sensors are located, preferably in layman's terms. Or maybe someone knows where I might be able to view a schematic. Also if some one might have any input as to what could have happened between me last driving it and parking without issue, and then having the problems I encountered last night. Thanks for any input in advance!!!

 

Erm, your 98 Van, shouldn't even HAVE an EGT sensor...... That's a diesel thing. Are you sure that's the right code? Any other codes present?

 

Yup HeyYou, that's the code. I have one of those readers, and it gives me the wording i quoted. I noticed a lot of references include Diesel vehicles, but I don't think it's exclusive to diesels. The only other code I get, and this one has been popping in and out for a long time without causing any issue, references a cylinder misfire, quoting the cylinder #. I erased the codes so I don't have the code itself.
I found this discussion from 2004-EGT's - gas versus diesel engines - https://www.turbodieselregister.com/...engines.90733/

 

They didn't use an EGT sensor in 98. None of that generation engines (aside from diesels) had one. I would try a different code reader, and see if it has something different to say.

 

Fair nuff HeyYou. Any thoughts on what might be going on? Since I can't start the van, I can't really re-create it throwing a code. The check engine light was not on before either. I just had a hunch and decided to check for a code. Appreciate you looking in on me!

 

Usually, if the PCM starts tossing codes that it has no business tossing..... I suspect the PCM itself. Unfortunately, not many folks have a 'spare' layin' around to swap in, and see if anything changes..... If a local junkyard has one cheap, that might be worth a shot. Being as yours is a 98, if it actually works with the 'new' PCM, you will need to have it flashed to the correct VIN, else various things will whine about it.

 

P0545 is also used to indicate an issue with the A/C relay circuit on non-diesel vehicles.

As to the engine not starting, is there spark, or have you tried spraying starting fluid into the throttle body to see if it's perhaps not getting fuel?

 

What does that mean "have the PCM flashed"? My A/C is not working, alloro, and I'm not using it. I also found that Code P0645 is for A/C Clutch Relay Control Circuit. So that's off a number, 0645 vs 0545. As to the starting, it turns over strong, and initially acts like it wants to start before it goes back to just turning over. And no, I haven't taken any troubleshooting steps yet, just wanted to get some ideas. A fuel pressure test would probably be appropriate, but I think my gauge fell victim to the culprit who stole so many of my things during my recent move. I keep finding myself missing stuff as I'm looking for it or needing it. Anywho, that's a place to start. I guess no fuel would mean bad fuel pump. Any other troubleshooting ideas? Thanks...

 

Yeah, see what's missing, fuel, or spark. (I would like to think that air isn't really a problem..... )

Most parts stores will rent you tools.... you basically pay for the tool, then get your money back when you return it.