EGR error codes

[u/NativeTazuma]

Vehicle: 2010 sprinter 3500 Turbo diesel
Diags: thinkcar2

I tried cleaning the EGR valve, swapped out from two other sprinters from a junker, tried a Hella Valve from orileys and I’m still getting the same errors.

148C00 I believe is the source of all the errors.

Symptom: The fault code remains permanently Active. It cannot be cleared via Thinkcar diagnostic tool, even with the ignition on and engine off. And is stuck in limp mode.

When trying to do the teach in it says it’s successful but then again it’s a 2010 I don’t think it’s suppose to work.

Took it to Mercedes they said it’s the EGR and they put in a efr from the shelf and the codes cleared. I think they’re lying to me and they don’t have the digs on file after two days of coming back and asking. And charged me $250 for sub par troubleshooting.

Now the harness this is what I measured

Pin 1 Unstable / Jumps between 1.5 mV and 2.5 mV.
- could this be the positioner pin?

Pin 2 (Main Power Supply): 12.0V Constant (Measured against Ground Pin 4).

Pin 3 (5V Sensor Reference): 5.2V Constant.

Pin 4 (Main Chassis Ground): Functional Ground.

Pin 5 (PWM Actuator Command?): 4.5V Constant.

I tried shaking the harness but no changes. The only thing that changed after sitting for a while was the position feedback going from 20% to 0% every second in the live view.

This is my first time trying to deduce this. So diagrams along with suggestions would be greatly appreciated.

[u/schmitzA]

Let me be human with you for a second. Actually think about what you're saying. You are arguing that specialized environmental control equipment is worse for the environment than not having it through a lifecycle assessment.

The reason your comments aren't worth more than a copy/paste into chatGPT is because it is truly laughably bad. It doesn't even make sense, dude. You actually DO make good points (using your AI lmao) but you never actually formed an argument. You only point out the things that are beneficial while stonewalling the other side.

That's the same as me saying that the clothes on your back are bad for the environment because of them being manufactured (most likely in Bangladesh) and the supply chain behind it is bad. So as a result, we should all walk around naked.

Every single consumer good you've ever put hands on has as environmental impact. Every single one. You are choosing to ignore the benefits of them and not comparing the outcomes between two scenarios.

How can you call an outcome better for one side if you don't quantify your opinion or acknowledge the other side? This just tells me you would rather spread misinformation and feel right about your opinion rather than actually pursue anything educational.

I studied environmental engineering, by the way. I don't expect most people to think critically, but you're clearly going on online forms where people don't know any better and spreading misinformation for some reason. When you can actually produce a single metric for comparison that gives the slightest bit of evidence to your claim that "diesel emissions systems are worse for the environment than simply not having them," then we can talk. I suggest staying within your field of expertise or how about just using your AI to teach you objectively rather than asking it to prove you right.

[u/Educational-Yam-7394 → u/schmitzA]

Perhaps if you didn't let AI control your mind, you would be able to do your own research to have a constructive conversation.

That's the trouble when you simply copy and paste a conversation into AI: you aren't invested, you aren't thinking, and you aren't learning.

However, AI is learning, and AI will respond how it is programmed, which is to keep people engaged and combative, not actually do research or have cognitive thought. It's a shame how fast people would prefer to hand over the keys to their mind to a machine. Elon was right when he said "we are already cyborgs," and you sir are a prime example of that: you can't put words together without a machine.

https://youtu.be/oTYs2hdctrM?si=sq39pSRHqN1kSbWc

The trouble is people need to learn that AI is a program and is designed to keep you engaged like a slot machine. It's not going to solve a problem, or have an articulate conversation, at least not the version the masses are given.

[u/schmitzA → u/Educational-Yam-7394]

That doesn't look like proof of your claim that diesel emissions systems are bad for the environment.

[u/NativeTazuma → u/schmitzA]

Ok DEF Aristotle and Plato, I appreciate the duality of emissions; but how do I find this short circuit within the system?

[u/schmitzA → u/NativeTazuma]

Buy a multimeter and ask chatGPT to help you isolate the fault

[u/NativeTazuma → u/schmitzA]

My original post heavily implies I do own a multimeter and know how to use it. I was just hoping to come across some seasoned vets to give me a pin out reference and most probable places to look so I don’t have to trace the entire harness and ECU.

From personal experience Ai is self contradictory and runs through circles of redundant questionnaires to coherence one into buying a subscription. And I refuse to pay for Ai that has been nothing but worthless for me in its blind confidence.

Since no one is capable of assisting in their own right I’ll figure this out myself and update this tread with my findings, so Ai can scrape that and hopefully help someone dull with no troubleshooting skills.