Used 2024 Mazda 3 engine computer – Electronic Control Module, (behind LH headlamp), 2.4L, FWD, ID 391712GRG2

Year & trim-specific price guide

Used 2024 Mazda 3 Engine Computer — Electronic Control Module, (behind LH headlamp), 2.4L, FWD, ID 391712GRG2 prices

Trim-specific pricing for the Electronic Control Module, (behind LH headlamp), 2.4L, FWD, ID 391712GRG2 variant of the 2024 Mazda 3 engine computer, built from 43 real salvage yard listings with condition grade detail.

2024 Mazda 3 · Electronic Control Module, (behind LH headlamp), 2.4L, FWD, ID 391712GRG2

$144

median asking price

43 priced listings · $48–$261

Price summary

A used 2024 Mazda 3 engine computer (Electronic Control Module, (behind LH headlamp), 2.4L, FWD, ID 391712GRG2) costs $48 to $261, with a median asking price of $144. Based on 43 priced salvage yard listings across the US, updated Aug 30, 2026. Prices exclude shipping, core charges, and installation.

Grade A (excellent)$155
Grade B (good)$142

2024 Mazda 3 engine computer — Electronic Control Module, (behind LH headlamp), 2.4L, FWD, ID 391712GRG2 price snapshot

USD
Low
$48
Average
$140
High
$261
43 priced listings used · last updated Aug 30, 2026· How we price·

Report incorrect price

Reporting price for 2024 Mazda 3 Engine Computer (Electronic Control Module, (behind LH headlamp), 2.4L, FWD, ID 391712GRG2)

Reason

Condition comparison

Price by part grade

Grade AClean / low wear$48–$26140 listings
Grade BStandard used$50–$1703 listings
Grade CVisible wearUpdating
Grade XUngradedUpdating

Median by grade

Grade price comparison

Median asking price by seller-reported condition grade · $48–$261 overall range

Trim-specific context

How does the Electronic Control Module, (behind LH headlamp), 2.4L, FWD, ID 391712GRG2 compare?

This pricing covers the Electronic Control Module, (behind LH headlamp), 2.4L, FWD, ID 391712GRG2 variant of the 2024 Mazda 3 engine computer, based on 43 priced listings. Its $144 median is 20% below the 2024 Mazda 3 engine computer overall median of $179.

There are 19 other engine computer variants available for the 2024 Mazda 3.

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

Same year, other trims

What other 2024 Mazda 3 engine computer variants are available?

Electronic Control Module, (behind LH headlamp), 2.0L, AWD, ID 391612GRB2

48 listings$172$76 – $350

Electronic Control Module, (behind LH headlamp), 2.4L, FWD, ID 391712GRC2

47 listings$181$65 – $266

Electronic Control Module, (behind LH headlamp), 2.0L, FWD, ID 391612GRA2

47 listings$164$50 – $306

Electronic Control Module, (behind LH headlamp), 2.4L, AWD, ID 391712GRH2

46 listings$170$50 – $305

Electronic Control Module, (behind LH headlamp), 2.4L, AWD, ID 391712GRD2

45 listings$138$65 – $280

Electronic Control Module, (behind LH headlamp), 2.4L, AWD, ID 391712GRB2

44 listings$137$85 – $305

Electronic Control Module, (behind LH headlamp), 2.4L, AWD, ID 391712GRF2

43 listings$211$70 – $287

Electronic Control Module, (behind LH headlamp), 2.4L, FWD, ID 391712GRA2

40 listings$225$50 – $307

Electronic Control Module, (behind LH headlamp), 2.4L, FWD, ID 391712GRC3

38 listings$180$55 – $297

Electronic Control Module, (behind LH headlamp), 2.4L, AWD, ID 391712GRD3

34 listings$168$80 – $261

Electronic Control Module, (behind LH headlamp), 2.4L, FWD, ID 391712GRE2

28 listings$231$45 – $432

Electronic Control Module, (behind LH headlamp), 2.4L, AWD, ID 391712GRB3

28 listings$153$80 – $259

Electronic Control Module, (behind LH headlamp), 2.4L, AWD, ID 391712GRF3

26 listings$232$75 – $430

Electronic Control Module, (behind LH headlamp), 2.4L, AWD, ID 391712GRH3

23 listings$215$100 – $361

Electronic Control Module, (behind LH headlamp), 2.4L, FWD, ID 391712GRA3

11 listings$200$150 – $251

Electronic Control Module, (behind LH headlamp), 2.4L, FWD, ID 391712GRG3

5 listings$135$100 – $211

Electronic Control Module, (behind LH headlamp), 2.0L, FWD, ID 391612GRA3

4 listings$246$211 – $246

Electronic Control Module, (behind LH headlamp), 2.0L, AWD, ID 391612GRB3

3 listings$218$125 – $225

Electronic Control Module, (behind LH headlamp), 2.4L, FWD, ID 391712GRE3

1 listings$211$211 – $211

Back to full guide

2024 Mazda 3 engine computer — all trims

View 2024 guide

Common questions

2024 Mazda 3 engine computer (Electronic Control Module, (behind LH headlamp), 2.4L, FWD, ID 391712GRG2) FAQ

How much is a used 2024 Mazda 3 engine computer (Electronic Control Module, (behind LH headlamp), 2.4L, FWD, ID 391712GRG2)?

Based on 43 priced salvage-yard listings, a used 2024 Mazda 3 engine computer in the Electronic Control Module, (behind LH headlamp), 2.4L, FWD, ID 391712GRG2 variant lists between $48 and $261, with a median asking price of $144.

Which years use the Electronic Control Module, (behind LH headlamp), 2.4L, FWD, ID 391712GRG2 engine computer?

In our current dataset, the Electronic Control Module, (behind LH headlamp), 2.4L, FWD, ID 391712GRG2 variant appears only for the 2024 model year.