What is Freightliner code EEC 61? | Vehicles, Cars and Engines (2024)

When you’re behind the wheel of a Freightliner, seeing the error code EEC 61 is never a good mark.

Driving a truck over long distances requires putting in a lot of work and putting in a lot of hours. There is little room for error and little room for profit. For instance, a Freightliner code EEC 61 is an issue that necessitates immediate attention from someone.

What is Freightliner code EEC 61? | Vehicles, Cars and Engines (1)

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What is the EEC 61 code on Freightliner?

EEC 61 code represents an error on Freighliner that indicates an after-treatment regulator unit problem. Usually, EEC 61 code indicates an electrical failure to the injector or a bad solenoid on the injector, but your mechanic should first check and fix the terminal crimp.

The engine utilizes this module as part of the after-treatment system. It will appear that your Check Locomotive light and your Repair light are on at a similar phase. The upkeep warning light seems like a yellow engine and should always be on. A fuel gauge indicator comprised of four green-sided figures indicates that the level of your DEF (Diesel Exhaust Fluid) tank is at its maximum capacity.

What is Freightliner code EEC 61? | Vehicles, Cars and Engines (2)

If the DEF tank you have is less than half full, an EEC61 error message will be displayed, but you should strive to keep it at least half full at all times. After a few minutes of driving, the indicator light should turn off after three presses of the key.

If you don’t put gas in it, the engine will slow down to 25 percent of its average speed; if you keep driving, it will slow down to five miles/ hour. It will slow down to 25 percent of its average rate if you don’t put gas in it. This is only a scrap of information, and I hope the resolution isn’t too bad.

The DEF system will run a purge routine to clear the lines whenever the truck is turned off, and if it doesn’t detect any air stress, it will also set this.

Pulling it off is possible, provided you don’t run into the DEF problem I mentioned earlier. If you carry on to experience the issue, I recommend taking it to your neighborhood retailer. The consumer can determine with relative ease which of the possible causes is most likely to be at fault. After attempting to move my tandems for several minutes, a low air pressure note most likely rang in my ears; however, I got the maint light, so I’m going with DEF 3/4.

If there is a problem with the low air pressure, will the light go out after three keystrokes? In any event, I am incredibly grateful to you for your assistance.

Of course, the best way and first thing are to avoid the need for repairs by taking preventative measures. If you have a reasonable maintenance schedule, you can spot complications before they become serious, which will help you avoid breakdowns. You can find information on how to perform routine maintenance on your vehicle and identify potential issues in the owner’s manual that came with it.

How to do a proper Freightliner inspection?

Before beginning any journey of significant length, you must perform the following inspections:

  • Make sure you check the amount of oil in your vehicle.
  • It is essential to check both the radiator and the overflow bottle. Always be on the lookout for the possibility of a leak!
  • If you have been parked the truck for a few days, you should inspect the fuel vent;
  • Please make sure the tires have the proper amount of air pressure in them; and
  • Checking the brakes regularly for signs of wear and tear, such as vibrations or squealing sounds, is essential to ensure they are in good working order.

Performing routine maintenance on a vehicle more frequently increases as the vehicle ages. If the FMCSA begins to issue fines for violations of the Compliance, Safety, and Accountability (CSA) Act, this is a symbol that you ought to upsurge the frequency with which you perform maintenance checks on your vehicles.

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Robert Aksamit is a mechanical engineer and automotive industry expert. Robert was born in Minnesota and worked in the US automotive industry for 25 years.

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What is Freightliner code EEC 61? | Vehicles, Cars and Engines (2024)

FAQs

What is Freightliner code EEC 61? | Vehicles, Cars and Engines? ›

Eec 61 comes up as a emissions control fault. Cel 74 could also be triggered by a low engine power/derate. Digging into the forums/freightliner

freightliner
Freightliner Trucks is an American semi truck manufacturer. Founded in 1929 as the truck-manufacturing division of Consolidated Freightways (from which it derives its name), the company was established in 1942 as Freightliner Corporation.
https://en.wikipedia.org › wiki › Freightliner_Trucks
technician diagnostic manual asks that you make sure that the def tank is at least 1/2 full and that you cycle power 3 times to reset the code.

What is the code EEC 61 on a Freightliner engine? ›

This is an aftertreatment code. Make sure your DEF tank is at least half full. Make sure the truck doesn't get shut off with low air pressure or the lines can't purge. Try cycling the key on and off 3 times and see if the code remains.

What is EEC on a truck? ›

The Ford EEC or Electronic Engine Control is a series of ECU (or Engine Control Unit) that was designed and built by Ford Motor Company.

What is EEC 61 3364 fail 2 FMI? ›

SPN 3364 Fail 2 is telling you that your Diesel Exhaust Fluid (DEF) has a quality issue, or at least that is what the ACM thinks. There are test strips available to test for DEF contamination. Also your DEF pressure sensors, lines DEF nozzle should be checked.

What is the code 61 on a Peterbilt engine? ›

Fault Code 61 indicates a failure with the circuit controlling the Rail Motor and the side-to-side movement of the X-Y Shift Finger. Read below to learn how to test, clear and fix fault code errors for your Freightliner, Mack, Peterbilt, Kenworth, Volvo, International, and heavy-duty truck and equipment.

What is the code 61 on a cat engine? ›

Flash code 61 represents 2 faults, high coolant temperature and very high coolant temperature.

What is the derate code? ›

When you get a derate code it is a sign of underlying problems. Some of the most common underlying problems that lead to the derate code on FPT engines are: Intake Manifold Temperature Sensor. Fuel Pressure Relief Valve.

How do I clear my Obdii error code? ›

Plug an OBD-II scanner into your vehicle's OBD port and reset it to clear the check engine light. Disconnecting and reconnecting your battery will restart your vehicle's computer and clear the light. Drive an older vehicle around for a few days after repairs. The light will go off on its own once the computer resets.

What does code 3364 mean? ›

SPN 3364/FMI 18

Description. Improper Diesel Exhaust Fluid (DEF) Quality Warning. Monitored Parameter. DEF Quality.

Which FMI code represents abnormal update rate? ›

A common data failure is FMI 9 for an abnormal update rate or FMI 10 for an abnormal rate of change. An FMI 9 failure code is an issue with the CAN communication where data is not being sent and received in a timely way by the engine computer.

What is 61 1 car code? ›

61-1 and 62-1 are common codes in Hondas. They usually happen during cranking with a weak battery. They are typically permanent codes and don't cause a check engine light. Unless there is an ongoing problem, ignore them.

What is the code for transmission failure? ›

The P0700 code indicates a problem with the transmission. It should not be ignored, because there can be serious drivability problems now and in the future.

What is error code van 61? ›

Well, this code is VALORANT's way of saying, "Hold on, you're banned." Yes, banned from playing the game.

What is flash code 62 on Freightliner? ›

Flash Code 62 may also indicate that the function assigned to the Auxiliary Output #1, #2, #5, #6, #7 or #8 circuit output is open, shorted to ground. This diagnostic condition is detected when the Auxiliary Output #"X" function is OFF and the DDEC III ECM measures a low voltage on the circuit output.

What is transmission code 21 on Freightliner? ›

Fault Code 21 indicates a problem with the Auto-Neutral Park Brake Switch circuit.

What is SPN code 51? ›

SPN 51/FMI 2 - ALL YEARS

This diagnostic is typically Intake Throttle Position Deviation Error. This code sets when the intake throttle valve position has a 30% deviation from the position commanded by the Motor Control Module (MCM) when the engine coolant temperature is above 60°C (140°F).

What is Freightliner code SPN 521052 FMI 31? ›

SPN 521052/FMI 31

Description This Code Sets When SPN 521050/FMI 31 has been Present for One Hour of Idle Time, the Vehicle has been Restarted or Six Gallons of Fuel has been Used.

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