EEC 61 fault code on a freightliner with detroit engine - Cars & Trucks (2024)

FAQs

EEC 61 fault code on a freightliner with detroit engine - Cars & Trucks? ›

If your DEF got low, it will throw a EEC61, but you need to fill the DEF tank 1/2 full or more. After you drive awhile, after 3 key cycles that light should go off. IF THIS IS THE PROBLEM. If you do not fill it up, the Engine will Derate to 25%, then if you continue to drive, it will derate you to 5 miles per hour.

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.

Electronic Engine Control (EEC)

ENG 0 means that there is a loss of communication with the engine ECM. You want to verify your power and grounds going to the ECM. Check between your battery box and ECM for an in-line fuse holder and blown in-line fuse or any corrosion or damage within the wire connectors and wiring between your battery box and ECM.

Most likely it thinks the DEF tank is empty because you have the 545 25 codes which is the sensor for the level valve in the tank itself. This will also cause you to have the issue wit hteh dpf system when that level sensor is faulting. Have that sensor tested and that level sensor changed out.

If your DEF got low, it will throw a EEC61, but you need to fill the DEF tank 1/2 full or more. After you drive awhile, after 3 key cycles that light should go off. IF THIS IS THE PROBLEM. If you do not fill it up, the Engine will Derate to 25%, then if you continue to drive, it will derate you to 5 miles per hour.

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.

Unexpected Fuel Economy Drop

If your truck's gas mileage plunges in the time span of around 2 weeks your ECM or sensor attached to it could possibly be causing the problem. If your gas mileage falls throughout the course of a few years it would be best to see your mechanic since this likely wouldn't be from an ECM.

Definition. FADEC is a system consisting of a digital computer, called an electronic engine controller (EEC) or engine control unit (ECU), and its related accessories that control all aspects of aircraft engine performance.

The eec relay is the Electronic Engine Control relay. This is the relay that sends power to the computer and related sensors. This is located under the hood and has a brown connector going to it.

How do you clear a truck 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 are Permanent Diagnostic Trouble Codes? Permanent Diagnostic Trouble Codes (PDTCs) are very similar to regular Diagnostic Trouble Codes (DTCs). However, unlike regular DTCs, they cannot be reset by disconnecting the vehicle's battery or cleared using an On-Board Diagnostic (OBD) scan tool.

Ecu 1 fault means the engine ecm has a internal fault and needs to be replaced. Most of the time with this code It's not the ecm itself it's usually a wiring problem going to ecm. Their should be two fuses for ecm either next to ecm in plastic covers or by starter or in battery box.

Fault Code 25 indicates the TECU has determined that all transmission functions are operating normally and the transmission currently has no logged fault codes.

154 fmi 14 is an EGR system related fault code. check for proper operation of the EGR valve and excessive soot or carbon build-up causing it to malfunction or stick. Most times 99% of the time the EGR valve needs to be replaced.

An automatic transfer switch (ATS) is a critical component of an Emergency Power System. It senses the loss of normal utility power, and automatically signals the generator to start and begin generating electricity.

The PNDB distributes battery power to the SAM cab, SAM chassis, powertrain PDM, and other keep-alive circuits. The PNDB is mounted in the engine compartment on the frontwall near the steering column. The label on the PNDB fuse cover identifies typical circuits.

A CPC Module, or Common Powertrain Controller, is often referred to as the “brain” of a truck. It controls the truck's powertrain and other various engine functions. Without it, a vehicle is inoperable.

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.