17-18 Hyundai Elantra 2.0L Engine Control Electronic Module ECU ECM 39172-2EFE1

Description

This is a genuine OEM Hyundai Engine Control Module (ECU), part number 39172-2EFE1. This Continental-manufactured unit is the central "brain" for the 6th Gen (AD) Hyundai Elantra. It is the revised version of the -2EFE0 hardware, designed to manage high-level engine operations, including variable valve timing, electronic throttle body synchronization, and fuel mapping for the 2.0L Nu engine.

This unit is the factory-correct replacement for vehicles experiencing "No Start" conditions, internal processor faults (such as P0606), or communication failure with the Body Control Module (BCM). This module was carefully removed from a functioning donor vehicle and has undergone a thorough visual inspection. All high-density connector pins are straight, clean, and free of moisture or corrosion.

Vehicle Compatibility

This ECU is specific to US-market, US-built Elantra sedans. Please match your original part number exactly.

• Hyundai Elantra (Sedan): 2017, 2018

• Engine: 2.0L 4-Cylinder (Non-Turbo)

• Transmission: Automatic

• Note: Fits models with ID 39172-2EFE1. This part often carries a secondary identification number of 39173-2EFE0 on the same label; both must be verified for 100% compatibility.

Key Features

• OEM Reliability: Genuine Continental/Hyundai hardware ensures 100% compatibility with your vehicle's factory sensors and electrical harness.

• Direct Fit: Exact factory replacement; fits into the original engine bay bracket and utilizes the factory dual-plug harness connectors.

• Tested Integrity: Pulled from a functioning vehicle and inspected for physical health and terminal stability.

Programming Requirement

IMPORTANT: This ECU is not plug-and-play. This unit is integrated with the Hyundai Immobilizer / Smart Key system. It must be professionally programmed/flashed to your specific vehicle's VIN and your existing transponder keys by a Hyundai dealership or a qualified automotive locksmith using a professional diagnostic tool (GDS/KDS). The vehicle will not start until the security synchronization is completed.