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What Does Ecu 128 Code Mean on a Freightliner?

FAQs Jackson Bowman September 23, 2022

What does code ECU 128 mean on a Freightliner?

Code: 128 001 06

In this case, this indicates a problem in subsystem 001 (cylinder # 1 injector) and error 05 (cylinder #< /b> 1 injector short circuit).

What is an ECU code?

ECU Trouble Codes, also known as Diagnostic Trouble Codes (DTC), are part of the on-board diagnostic system (OBD II) in your car. These codes provide information on which systems are malfunctioning, where the problem is located, and what exact problem is causing your check engine light to stay on.

How do I know my ECU is bad?

Here are the most common symptoms of a bad ECU: Check Engine Light stays on after reset. Car started with wrong polarity. Engine stops for no reason.

How do I reset my ECU?

What happens if the ECU fails?

For example, if your engine isn’t getting enough fuel because the faulty ECU has displaced the air/fuel mixture, your vehicle will lag or stutter when you step on the accelerator. Too much fuel can make your engine pump and decrease your fuel economy. The ECU can also affect the timing of your engine.

How much does an ECU cost?

The part alone can cost between $1,000 and $3,000 depending on the make and model of your vehicle. Fortunately, in many cases an ECU can be repaired or reprogrammed – avoiding actual ECU replacement.

How much does ECU repair cost?

On average, you can expect the parts cost to be between $400 and $1,400, while the labor cost for reprogramming and installation will be around $100 to $200. A refurbished ECU might save you some money, but that usually comes with some risk.

What causes ECU to fail?

1) Battery empty

Car batteries have electronic cells that have to work for the control unit to work. If one of the cells in your car battery dies, your ECU will soon fail. As soon as all cells are empty, the battery is considered empty and your entire vehicle can no longer function.

How do I reset my Freightliner computer?

References:

  1. https://carhooq.com/mercedes-ECU-128/
  2. http://masrepair.com/repair-services/ecu-engine-repair/ecu-fault-codes-tell-whats-wrong-ecu/
  3. https://www.ecudoctors.com/pages/ecu-faults
  4. https://www.youtube.com/watch?v=HN4-iTKTI2U
  5. https://lucasautocare.com/what-is-the-engine-control-unit-and-how-can-i-tell-if-i-have-a-faulty-ecu/
  6. https://www.carsdirect.com/car-repair/how-to-tell-if-you-have-a-faulty-ecu
  7. https://cartreatments.com/ecu-symptoms-and-cost/
  8. https://oards.com/causes-of-engine-ecu-failure/
  9. https://www.youtube.com/watch?v=TQ-20oI05fs

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