P/N: 0 281 021 009 | Genuine Bosch® ECU Module A26 EPA20 Engine Skip to content
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0 281 021 009 | Genuine Bosch® ECU Module A26 EPA20 Engine

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  • Product SKU: 0 281 021 009
  • Availability: In Stock
Original price $485.00 - Original price $485.00
Original price
$485.00
$485.00 - $485.00
Current price $485.00
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Description: ECU Engine Control Module A26 EPA20 Engine
Brand: Bosch
Condition: New
Part Number: 0 281 021 009, 0281021009

Fitment 0 281 021 009For International A26 EPA20 Engine
- RH Regional Haul
- Linehaul Transport (LT)
- HV with Heavy Duty Engines
- HX Heavy Extreme

An Engine Control Module (ECM) 0 281 021 009 - sometimes called an Engine Control Unit (ECU) - is the computer that manages and controls an engine’s performance in modern vehicles. The ECM monitors and adjusts the engine’s operation to ensure it runs efficiently, produces low emissions, and delivers the right amount of power. It constantly processes data from various sensors throughout the engine and vehicle.

 
  •  Better Fuel Efficiency

    • The ECU calculates the perfect air–fuel ratio for different driving conditions, reducing fuel waste.

  •  Lower Emissions

    • By carefully controlling combustion and exhaust systems, it keeps harmful gases (like CO, NOx, and HC) within legal limits.

  •  Improved Performance

    • Adjusts ignition timing and fuel injection for maximum power and smooth acceleration.

  •  Self-Diagnosis & Monitoring

    • Detects and records faults (via OBD — On-Board Diagnostics), making it easier to identify issues with sensors, fuel systems, or ignition.

  •  Engine Protection

    • Monitors temperature, pressure, and load to prevent overheating, knocking, or over-revving that could damage the engine.

  •  Adaptability

    • Automatically adjusts to changing conditions — altitude, temperature, fuel quality, or driving habits — without needing manual tuning.


Signs of Faulty 0 281 021 009

1. Check Engine Light Stays On

  • One of the first indicators.

  • The ECU turns this light on when it detects a problem — but if the light stays on even after repairs, or if it flashes erratically, the ECU itself could be faulty.

2. Engine Performance Issues

A failing ECU can send wrong signals to the fuel and ignition systems, leading to:

  • Rough idling or stalling

  • Misfiring or poor acceleration

  • Reduced power or hesitation

  • Hard starting or no start at all

3. Poor Fuel Economy

  • Incorrect fuel mixture control causes the engine to run too rich (too much fuel) or too lean (too little fuel).

  • You might notice frequent fill-ups or black smoke from the exhaust.

4. Difficulty Starting or No Start

  • If the ECU fails completely, it may not send signals to injectors or ignition coils, preventing the engine from starting even though the starter cranks.

5. Random or Inconsistent Error Codes

  • When scanned with an OBD-II reader, you might see unrelated or constantly changing fault codes, or no codes at all when issues clearly exist.

6. Electrical Problems

  • Faulty ECUs can cause erratic behavior in gauges, warning lights, or sensors because they process signals incorrectly.

7. Engine Shuts Off Unexpectedly

  • In severe cases, the engine may suddenly die while driving if the ECU loses communication with critical sensors.


Manufacturer information:

Bosch® keeps the world mobile. It is among the oldest and largest manufacturers of automotive parts, accessories, and hardware. Founded by Robert Bosch as the "Workshop for Precision Mechanics and Electrical Engineering" in 1886, Bosch was known for its innovative strength and social commitment. Bosch spare parts are world recognized for their remarkable quality and reliability, and groundbreaking technology. This brand combines its wide-ranging expertise in automotive technology with advanced software, hardware, and services to deliver comprehensive mobility solutions. With its state-of-the-art brake systems, lighting systems, long-lasting batteries, air filters, starters, and wiper blades, and many other products, Bosch provides the auto and truck parts markets with world-class replacement and spare parts that make driving safer, less stressful, and more eco-friendly.

Warranty
First Truck Parts offers a 365 -days warranty for all types of parts and in any condition. The warranty applies only to buyers who have placed an order on our website.

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