Used 2021 Hyundai Elantra engine computer – Electronic Control Module, 2.0L, US built, automatic engine stop and start, ID 391712JBC0

Year & trim-specific price guide

Used 2021 Hyundai Elantra Engine ComputerElectronic Control Module, 2.0L, US built, automatic engine stop and start, ID 391712JBC0 prices

Trim-specific pricing for the Electronic Control Module, 2.0L, US built, automatic engine stop and start, ID 391712JBC0 variant of the 2021 Hyundai Elantra engine computer, built from 14 real salvage yard listings with condition grade detail.
Price summary

A used 2021 Hyundai Elantra engine computer (Electronic Control Module, 2.0L, US built, automatic engine stop and start, ID 391712JBC0) costs $45 to $420, with a median asking price of $161. Based on 14 priced salvage yard listings across the US, updated Aug 26, 2026. Prices exclude shipping, core charges, and installation.

Grade A (excellent)$161
Grade B (good)$146

2021 Hyundai Elantra engine computer — Electronic Control Module, 2.0L, US built, automatic engine stop and start, ID 391712JBC0 price snapshot

USD
Low
$45
Average
$169
High
$420
14 priced listings used · last updated Aug 26, 2026· How we price·

Report incorrect price

Reporting price for 2021 Hyundai Elantra Engine Computer (Electronic Control Module, 2.0L, US built, automatic engine stop and start, ID 391712JBC0)

Reason

Condition comparison

Price by part grade

Grade AClean / low wear$125$4206 listings
Grade BStandard used$131$1717 listings
Grade CVisible wearUpdating
Grade XUngraded$45$451 listings

Median by grade

Grade price comparison

Median asking price by seller-reported condition grade · $45$420 overall range

Trim-specific context

How does the Electronic Control Module, 2.0L, US built, automatic engine stop and start, ID 391712JBC0 compare?

This pricing covers the Electronic Control Module, 2.0L, US built, automatic engine stop and start, ID 391712JBC0 variant of the 2021 Hyundai Elantra engine computer, based on 14 priced listings. Its $161 median is 9% above the 2021 Hyundai Elantra engine computer overall median of $148.

There are 16 other engine computer variants available for the 2021 Hyundai Elantra.

Pricing is not a fitment guarantee. Match the VIN, part number, engine or drivetrain, and seller-listed variant before ordering.

Same trim, other years

Electronic Control Module, 2.0L, US built, automatic engine stop and start, ID 391712JBC0 in other model years

Same year, other trims

What other 2021 Hyundai Elantra engine computer variants are available?

Electronic Control Module, 2.0L, Korea built, AT (CVT), w/o automatic engine stop and start; ID 391712JCC5

39 listings
$126$63$394

Electronic Control Module, 1.6L, turbo, MT

36 listings
$153$75$400

Electronic Control Module, 1.6L, turbo, AT

33 listings
$161$50$644

Electronic Control Module, 2.0L, Korea built, AT (CVT), automatic engine stop and start, ID 391732JCC0

33 listings
$149$116$500

Electronic Control Module, 2.0L, US built, automatic engine stop and start, ID 391712JBD0

31 listings
$165$98$267

Electronic Control Module, 2.0L, US built, automatic engine stop and start, ID 391712JBE0

30 listings
$161$99$500

Electronic Control Module, 1.6L, naturally aspirated (Hybrid), (gasoline engine)

28 listings
$154$90$395

Electronic Control Module, 2.0L, Korea built, AT (CVT), w/o automatic engine stop and start; ID 391712JCB5

26 listings
$121$50$389

Electronic Control Module, 2.0L, Korea built, AT (CVT), automatic engine stop and start, ID 391712JCB0

20 listings
$141$85$300

Electronic Control Module, 2.0L, Korea built, AT (CVT), automatic engine stop and start, ID 391732JCB0

12 listings
$170$82$205

Electronic Control Module, 2.0L, US built, w/o automatic engine stop and start; ID 391712JBB5

12 listings
$121$100$207

Electronic Control Module, 2.0L, US built, w/o automatic engine stop and start; ID 391712JBD5

11 listings
$143$106$281

Electronic Control Module, 2.0L, US built, automatic engine stop and start, ID 391712JBB0

10 listings
$150$90$325

Electronic Control Module, 2.0L, Korea built, AT (CVT), automatic engine stop and start, ID 391712JCC0

9 listings
$165$121$257

Electronic Control Module, 2.0L, Korea built, AT (CVT), w/o automatic engine stop and start; ID 391732JCC5

9 listings
$383$253$455

Electronic Control Module, 2.0L, Korea built, MT (Canada market)

2 listings
$325$325$325

Back to full guide

2021 Hyundai Elantra engine computer — all trims

Common questions

2021 Hyundai Elantra engine computer (Electronic Control Module, 2.0L, US built, automatic engine stop and start, ID 391712JBC0) FAQ

How much is a used 2021 Hyundai Elantra engine computer (Electronic Control Module, 2.0L, US built, automatic engine stop and start, ID 391712JBC0)?

Based on 14 priced salvage-yard listings, a used 2021 Hyundai Elantra engine computer in the Electronic Control Module, 2.0L, US built, automatic engine stop and start, ID 391712JBC0 variant lists between $45 and $420, with a median asking price of $161.

Which years use the Electronic Control Module, 2.0L, US built, automatic engine stop and start, ID 391712JBC0 engine computer?

The Electronic Control Module, 2.0L, US built, automatic engine stop and start, ID 391712JBC0 variant appears in model years 2021, 2022. Prices and availability may differ by year.