2018 Hyundai Elantra engine computer — Electronic Control Module, US market, Sedan, 2.0L, AT, Korea built, ID 391702EFC1 price snapshot
- Low
- $50
- Average
- $112
- High
- $294

Year & trim-specific price guide
A used 2018 Hyundai Elantra engine computer (Electronic Control Module, US market, Sedan, 2.0L, AT, Korea built, ID 391702EFC1) costs $50 to $294, with a median asking price of $106. Based on 33 priced salvage yard listings across the US, updated Aug 22, 2026. Prices exclude shipping, core charges, and installation.
Condition comparison
| Grade | Price range | Relative range | Listings |
|---|---|---|---|
| Grade AClean / low wear | $50–$294 | 29 | |
| Grade BStandard used | $86–$147 | 3 | |
| Grade CVisible wear | Updating | — | |
| Grade XUngraded | $75–$75 | 1 |
Median by grade
Median asking price by seller-reported condition grade · $50–$294 overall range
Trim-specific context
This pricing covers the Electronic Control Module, US market, Sedan, 2.0L, AT, Korea built, ID 391702EFC1 variant of the 2018 Hyundai Elantra engine computer, based on 33 priced listings. Its $106 median is 6% above the 2018 Hyundai Elantra engine computer overall median of $100.
There are 28 other engine computer variants available for the 2018 Hyundai Elantra.
Pricing is not a fitment guarantee. Match the VIN, part number, engine or drivetrain, and seller-listed variant before ordering.
Same year, other trims
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Common questions
Based on 33 priced salvage-yard listings, a used 2018 Hyundai Elantra engine computer in the Electronic Control Module, US market, Sedan, 2.0L, AT, Korea built, ID 391702EFC1 variant lists between $50 and $294, with a median asking price of $106.
In our current dataset, the Electronic Control Module, US market, Sedan, 2.0L, AT, Korea built, ID 391702EFC1 variant appears only for the 2018 model year.