Ignitions and Electrical› Computers, Chips, Modules and Programmers

Honda

Engine Control Module

$955.05

SKU: 37820-PNF-A03

In Stock
In Stock
Ships by Sep 12
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Honda 37820-PNF-A03 is a genuine OEM engine control module (ECM) designed for specific Honda Civic models. This rewritable control module is a direct replacement part.
Show original supplier description
The Honda 37820-PNF-A03 is a genuine OEM Engine Control Unit (ECU), also known as an ECM or PCM, designed as a direct replacement for specific Honda Civic models from 2002 to 2005. This ECU is available with a programming service that allows for a plug-and-play installation, avoiding costly dealer programming fees and locksmith services. The process involves sending your original ECU to the seller, who will transfer the data, including your VIN, to the replacement unit. This ensures the vehicle can start with your existing keys and that the immobilizer system functions correctly. The entire turnaround time for this service is typically 5 to 7 business days. Symptoms of a failing ECU can include rough idle, cylinder misfires, poor acceleration, failure to be detected via OBD, non-functioning A/C, difficulty starting, fault codes that won't clear, and transmission shifting problems. This replacement unit comes with a 2-year warranty.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandHonda
Part Number37820-PNF-A03
CategoryIgnitions and Electrical

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

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