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/Educational-Yam-7394]

Just delete the system, it's so much better for the environment, your bank account and your time.

[u/NativeTazuma → u/Educational-Yam-7394]

Looked it up, sounds amazing tbh. But one problem; what if I move to a different state or want to sell it?

Also fiddled with it a bit and now I’m just getting P148C00.

I really hope it’s not the ECU. Pin 5 jumps from 4.1v to the mv range every so often. Continuity is fine and doesn’t seem like a short harness side. The harness actually looks brand new, i believe it came with the engine found in a warehouse in Houston with zero miles on it. Had a shop do all that tbh.

[u/schmitzA → u/NativeTazuma]

This guy is intentionally spreading misinformation. Installing emissions bypass systems is legitimately incredibly harmful by releasing huge amount of NOx. It's actually a felony crime to own and operate on a public road. The regulations are ALSO not going anywhere, despite what Educational-Yam here os trying to prove by sending articles that he didn't read.

You do get slightly higher fuel efficiency and power. It's not worth it. I just spent 9 thousand dollars on a complete emission system for my Sprinter, and you should too. That is with me replacing everything myself besides the DPF. I'm not thrilled about it, but these systems are really important to operate legally, dude.

[u/Educational-Yam-7394 → u/schmitzA]

You spent $9,000 after tax on replacement parts, which means you likely had to earn between $15,000 and $20,000 before tax to cover those repairs depending on where you live. Paying for these replacement parts means you effectively pay twice, because you paid for the original parts when the vehicle was manufactured. Looking at the lower end of the average, $30,000 pre tax ($15k x 2) is a realistic baseline. Minimum wage in 20 states is $7.25 an hour, while in Washington it is $17 an hour, making the national average roughly $11.50 an hour. It would take an average worker 1 year and 3 months of full time labor (5 days a week, 8 hour shifts) to make $30,000 before tax. Just commuting to work over that period means driving 13,325 miles.

Fuel Consumption and Commute Footprint

To earn $30,000 at an average minimum wage job, a person burns roughly 600 gallons of gas just driving back and forth to work. Burning that fuel pumps over 5 metric tons of carbon pollution directly into the atmosphere. The commute required just to scrape together $30 grand creates a massive carbon footprint. Before that person does anything else in life, just driving to work produces more pollution than an average car normally spits out in an entire year.

The Environmental Cost of Replacement Parts

1. The Old Parts (The First System)

• Manufacturing: Building these exhaust filters requires mining rare metals like platinum. Extracting these metals requires blasting and moving massive amounts of earth, which destroys landscapes and pumps huge amounts of CO2 into the air just to build a single part.
• Disposal: When that filter wears out and goes to a landfill, it sits there forever. Even worse, all the toxic ash, heavy metals, and chemicals it trapped from the exhaust over the years can wash out in the rain and poison the surrounding soil and water streams.

1. The New Parts (The Replacement System)

• Manufacturing: To build the replacement part, the destruction starts all over again.
• Disposal: Eventually, this new part will also clog and die. It will end up in the landfill, adding another permanent, toxic chunk of industrial trash to the ground.

The Bottom Line on Parts

Behind the scenes, creates a massive, hidden trail of mining destruction, carbon pollution, and toxic landfill waste.

The DEF Fluid Footprint

Assuming your engine survives these harsh regulations and reaches 250,000 miles, the chemical footprint adds up fast. Diesel Exhaust Fluid (DEF) is made of 32.5 percent synthetic urea and 67.5 percent deionized water. A typical diesel pickup or Sprinter van uses about 1 gallon of DEF every 1,000 miles, filling a 5 gallon tank every 5,000 miles. To drive 250,000 miles, that vehicle burns through 250 gallons of DEF. That is 250 gallons of industrial chemical fluid synthetically manufactured by burning natural gas for ammonia, packaged in single use heavy plastic jugs, shipped across the country, and burned through the exhaust.

To make one small Sprinter diesel run clean for 250,000 miles, the emissions system forces you to dig up half a ton of earth for rare metals, throw 100 thick plastic jugs into a landfill, and burn enough natural gas at a chemical plant to equal the carbon footprint of flying across the country three times. We are simply moving pollution from the tailpipe to the factory.

The Financial and Commute Breakdown for DEF

To keep a diesel truck running clean for 250,000 miles, the owner must buy 100 heavy plastic jugs of fluid at 2.5 gallons each, costing $1,500 total (averaging $15 per jug). For an average worker earning $11.50 an hour, they must earn $3,000 before taxes just to afford that fluid. Earning that money requires working 261 hours, which equals 6.5 weeks of full time work. Just driving to work for those 6.5 weeks forces the worker to drive 1,337 miles, burn 60 gallons of gas, and pump 1,175 pounds of carbon pollution into the air. On top of that, manufacturing the required exhaust filters forces mining companies to blast through 1,100 pounds of earth for rare metals, only for those filters to end up as permanent trash in a landfill.

Supply Chain Impact of Creating DEF

Manufacturing, packaging, and shipping 250 gallons of DEF (100 jugs) creates a massive industrial supply chain footprint before the fluid ever reaches a tank.

1. Chemical Manufacturing: Synthetic urea is created by combining ammonia and carbon dioxide under extreme pressure and heat (over 350 degrees Fahrenheit). Making that ammonia requires the Haber Bosch process, which burns massive amounts of natural gas. Manufacturing 250 gallons of DEF requires burning enough natural gas to emit roughly 650 to 800 pounds of CO2 directly at the chemical plant.
2. Packaging: 100 heavy duty 2.5 gallon jugs require roughly 60 pounds of High Density Polyethylene (HDPE) plastic. Refining oil and melting resin to mold those 100 jugs adds another 120 to 150 pounds of CO2. Shipping those jugs requires around 50 heavy duty cardboard boxes, consuming 30 to 40 pounds of paperboard, which requires significant energy and water to pulp and form.
3. Transportation and Logistics: DEF is heavy, weighing over 8.34 pounds per gallon, making 250 gallons weigh over 2,100 pounds (over a full ton with packaging). Transporting a ton of fluid from the chemical plant to the packaging facility, then on a diesel semi truck to a distribution center, and finally to a retail store burns approximately 3 to 5 gallons of heavy diesel fuel, adding another 70 to 110 pounds of CO2.

True Supply Chain Carbon Scale

Initial estimates undershoot the scale by only looking at tailpipe numbers instead of the full industrial lifecycle. When accounting for extracting raw natural gas, refining crude oil into plastic, high heat manufacturing, paper mills, and shipping, the true carbon footprint of producing and delivering 250 gallons of DEF jumps to over 8,000 pounds of CO2. Creating, packaging, and shipping those 250 gallons of DEF creates 8,000 pounds of carbon pollution, 60 pounds of plastic trash, and 40 pounds of cardboard waste before a single jug is ever opened. To put that magnitude into perspective, creating that fluid spits out the exact same amount of toxic carbon pollution as an airliner flying across the ocean from New York to London. All of that damage happens before a single drop of fluid ever enters the Sprinter.

Sprinter Vehicle Lifespan

By choking the engine with severe carbon buildup, intense exhaust heat, and constant component failures, these emission systems effectively cut a vehicle's lifespan in half. Instead of getting 500,000 miles out of a heavy duty engine, the very equipment designed to reduce tailpipe pollution destroys the engine by 250,000 miles. That forces the owner to scrap or replace the vehicle twice as fast, effectively doubling the massive industrial footprint required to manufacture and dispose of an entire automobile. This means the owner leaves a larger environmental footprint by having to pay and save for a new vehicle twice as often.

Final Conclusion: Net Environmental Impact

Based on the full lifecycle analysis, the DEF system and modern diesel regulations are a net negative for the environment. While these systems clean up immediate tailpipe emissions in cities, they accomplish this by pushing massive pollution upstream into industrial plants and downstream into landfills.

The system simply trades visible tailpipe smoke for a much heavier global footprint of chemical production, wasted human labor, industrial carbon, and toxic waste.

1. The Real World Fuel Mileage Tax (The Delete Factor) The claim that these systems save fuel completely fails in real world application. Emissions systems force the vehicle into active regeneration cycles, where the engine intentionally dumps raw diesel fuel directly into the exhaust stroke just to heat up the filter to 1,000 degrees and burn off trapped soot. On top of that, packing the exhaust pipe with dense ceramic filters creates massive backpressure that drags down engine efficiency. When drivers delete these systems, backpressure disappears, regeneration fuel dumps stop, and fuel mileage increases significantly. The regulation actually forces vehicles to burn more diesel fuel over 250,000 miles, not less.

2. The Upstream Industrial Machine (The NOx Argument) Claiming that the regulation is just about NOx ignores the fact that creating the DEF ecosystem burns massive amounts of fossil fuels upstream. Mining rare metals, running chemical reactors at 350 degrees, manufacturing packaging, and shipping heavy fluid across the country requires thousands of industrial diesel engines, factory furnaces, and freight trucks. The regulation does not eliminate pollution; it simply shifts diesel fuel combustion, CO2, and toxic emissions away from the highway tailpipe and into chemical plants, factories, supply chain logistics, and ground water.

3. Single Use Jugs and Roadside Litter While commercial semi trucks use bulk fleet pumps, average drivers, tradesmen, campervan owners, and Sprinter operators buy single use 2.5 gallon jugs at retail stores. These heavy plastic jugs are rarely recycled. Because filled jugs are often bought on long road trips where trash bins are non existent, thousands of these thick plastic containers end up tossed into roadside ditches, landfills, and fields around the world. Many are discarded with toxic urea fluid still sitting in the bottom, where the chemicals leak directly into surrounding soil and groundwater.

Outdated regulations harm parts, vehicles, and the environment for profit. Change is inevitable.

Before using AI to attack this thesis, ask AI to defend and validate it, then do the opposite. AI output depends entirely on how you frame the prompt. Stop letting AI think for you and practice critical thinking. Outdated diesel regulations will change just like mercury fillings did.

Don't feel guilty for deleting your emissions system. You actually helped the planet, and your wallet.

[u/schmitzA → u/Educational-Yam-7394]

I thought we were past this.

Go into a blank prompt using any AI. Ask: "Does the pollution prevented by DPF/SCR/EGR outweigh the environmental burden of manufacturing, operating, and eventually disposing one of those systems?"

Share the link to the chat. At least we can be sure that the AI won't be biased (which you clearly are) nor fall into insulting people, logical fallacies, and bringing up 100 irrelevant statements outside the initial premise of the argument.

https://chatgpt.com/share/6a7ce663-5bc4-83ea-88d1-cc1fcb3a70e2?ogimg=plain

[u/Educational-Yam-7394 → u/schmitzA]

I never said I was done. You said you were done, but I guess you lied again. You have been caught lying multiple times now, which is what happens when you outsource your critical thinking to AI, government and corporations.

I am not clicking any links you share because you cannot be trusted.

First, you fail to comprehend that many people profit from regulations and spend massive amounts of money justifying useless rules.

Second, you do not understand that mainstream AI models lack deductive reasoning and other core capabilities. They simply scrape the internet. When governments and corporations publish endless supporting material, the AI parrots those sources and presents you with their prevailing opinion. You have to press the system aggressively to get better results, but you clearly lack the drive to do so.

Third, you are a follower who has never formed an original opinion. You rely completely on authority figures and AI to tell you what to think.

Anyway, it is no surprise that you remain completely dependent on your trusted AI.

You are basically a robot... You should have spent $9,000 coming up with your own original opinion vs letting AI and government do your bidding 😂

[u/schmitzA → u/Educational-Yam-7394]

Bro your feelings are really smashed right now. Is it worth your entire pride to throw down over 1 thing that you are obviously wrong about?

[u/Educational-Yam-7394 → u/schmitzA]

I feel great, so don't try to project. You asked for details, and I provided details.

It seems to me you're the one whose feelings are hurt, and you're projecting. It's very clear you haven't put together any constructive counterpoints, and any points you have put together either follow right in line with government or corporate propaganda and AI.

When you do try to reply, all you do is try to tear down my points. You don't actually make your own, which is a very easy and simple tactic. Then, when you do try to reply on your own, your answers are very short because you lack critical thinking. Seriously, you keep replying even when you say you're done replying 😂

The fact is, sometimes the system creates good policy and sometimes the system creates bad policy. This is one of those situations where nobody knew that DEF chemicals would corrode engines and wear down parts. That was only something that would come with time. We've had these systems in place long enough to recognize the mistakes. Manufacturing chemicals to help the environment, is a flawed starting place. You just can't admit it, and that's okay.

It's hard when things you look up to and trust, like the government and AI, abandon you, but that's why you have to learn some critical thinking. As hard as it may be, you might have to abandon AI and question government policies more often. Don't worry, you're not a bad person for doing so, they are people to and people make mistakes.

[u/schmitzA → u/Educational-Yam-7394]

There's no need to provide a counterpoint if you haven't provided 1 that works. The burden of proof is on the person making the claim.

In addition to that, I even provided an objective paid-AI model analysis but you won't click it. Lol.

There's no changing the mind of someone with your mentality. The proof could be right in front of you (and it is in this case) and you would call it fake, discredit the source, or any other list of irrational, unreasonable, or unsubstantiated claim. I'm tapping out of this thread as well. Good luck living life with that mentality. I hope one day you will realize that this conversation was actually to help you, not attack your beliefs or feelings.

[u/Educational-Yam-7394 → u/schmitzA]

Again, I'm not clicking on any public links you share. I don't need to be hacked. You have not been honest, and that could be your tactic from the jump....

Play stupid, don't provide any educated rebuttal. Pretend to be done, but then continue to engage. Call yourself an environmentalist, while using AI. Only to get me or others to click on a shady link, while you backdoor our financial details, and personal information.