HECU/ABS Module Electrical Short Causing Engine Compartment Fire
Burning smell from engine bay, smoke visible under hood, ABS warning light illuminated, TPMS warning light on, vehicle may catch fire while parked or while driving
ABS/HECU fire recall (21V137) + tow hitch fire (22V703) + Theta II engine defect. 2017-2022 Sportage owners may qualify for a buyback. Free review.
If you bought a 2017-2022 Kia Sportage, federal safety records show your vehicle may be living under not one but two separate park-outside fire advisories — and possibly a third engine defect that Kia took years and a federal consent order to fully acknowledge. The first fire risk sits inside the ABS braking system. The Hydraulic Electronic Control Unit (HECU) in 2017-2021 Sportage models can develop an internal electrical short. Kia used 40-amp fuses in that circuit — large enough to let current surge through the HECU board until it overheats and catches fire, whether the vehicle is moving or sitting in your driveway. NHTSA Campaign 21V137 (Kia internal campaign SC206) covers approximately 372,251 Sportage units and prompted NHTSA to issue a public consumer alert telling owners to park outside and away from structures until the dealer installs lower-amperage fuses. A second, separate park-outside advisory arrived in September 2022 for 2017-2022 Sportage models equipped with the Genuine Kia tow hitch harness accessory. Moisture and contamination on that harness module's circuit board can cause a short and start a fire — even with the ignition completely off. Kia confirmed at least four fires and 31 melting incidents before issuing NHTSA recall 22V703 (SC249). Beneath both fire risks sits the Theta II engine story. The 2.4L GDI and 2.0T GDI engines in 2017-2020 Sportage models have a manufacturing defect — metal debris in oil passages and rough crankshaft surfaces — that grinds down connecting rod bearings. Oil consumption climbs, eventually starving bearings entirely. Kia issued TSB ENG222 (excessive oil consumption) and TSB PI2002B (Knock Sensor Detection System software to warn owners of imminent bearing failure via a flashing check-engine light and limp mode). NHTSA opened investigation RQ17-003 into whether Kia handled the Theta II recall timely and honestly; the resulting consent order, signed November 2020, documented the agency's findings. Kia's Theta II issues ultimately became part of a $1.3 billion class-action settlement covering 2011-2019 model years.
The issues owners report most, ranked by severity — each one verified against a cited NHTSA source.
Burning smell from engine bay, smoke visible under hood, ABS warning light illuminated, TPMS warning light on, vehicle may catch fire while parked or while driving
Burning smell near rear of vehicle, visible fire or melting near tow hitch area, fire while vehicle is parked with ignition off
Rapid oil level drop between oil changes (quart per 1,000 miles or worse), oil warning light illumination, spark plug fouling, engine knocking or rattling, engine stall, engine seizure or failure, check engine light
Check engine light blinking continuously, vehicle enters limp mode (limited to ~1,800 RPM), vehicle accelerates slowly, DTC P1326 stored; may occur without advance warning before engine seizure
Fuel smell, visible fuel leak from engine bay, fuel puddle under vehicle, potential engine fire after prior engine replacement under warranty or recall
Vehicle stolen using USB cable and screwdriver inserted into ignition cylinder (no key needed); theft deterrent system easily defeated; steering column damage from theft attempts
A settled Margarian Law case on this exact model, published with the actual settlement math.
Open any defect for the symptoms and why it matters for a California lemon-law claim. Each is tied to a cited NHTSA source.
Burning smell from engine bay, smoke visible under hood, ABS warning light illuminated, TPMS warning light on, vehicle may catch fire while parked or while driving
Safety-critical fire risk. Owners who experienced ABS warning lights, burning smells, or who had vehicles catch fire before recall remedy was applied have strong lemon-law grounds if dealer failed to resolve within a reasonable number of repair attempts.
Dealer replaces HECU fuses with lower-amperage fuses (30A/25A instead of 40A) in electrical junction box; EPB-equipped vehicles also receive HECU software update
Burning smell near rear of vehicle, visible fire or melting near tow hitch area, fire while vehicle is parked with ignition off
Vehicle fire risk with ignition off is extreme. Owners with tow hitch harness who experienced fires or melting before recall remedy have strong claims. The park-outside advisory constitutes constructive acknowledgment of a safety defect.
Dealer replaces tow hitch harness module and installs new lower-capacity fuse; both driving and parked fire scenarios addressed
Rapid oil level drop between oil changes (quart per 1,000 miles or worse), oil warning light illumination, spark plug fouling, engine knocking or rattling, engine stall, engine seizure or failure, check engine light
Engine failure or repeated oil consumption repair attempts within warranty period are textbook lemon-law claims. Kia's $1.3B class settlement covering 2011-2019 Theta II engines demonstrates systemic defect acknowledgment. Owners needing multiple engine replacements or whose engines seized are strong candidates.
Oil consumption test performed per TSB ENG222; if threshold exceeded, short-block or long-block engine replacement; KSDS ECU upgrade (PI2002B) added as early-warning monitor
Check engine light blinking continuously, vehicle enters limp mode (limited to ~1,800 RPM), vehicle accelerates slowly, DTC P1326 stored; may occur without advance warning before engine seizure
P1326 activation often signals imminent engine failure. Owners whose engine failed after KSDS activation, or who were stranded in limp mode, have strong lemon-law grounds, especially if the dealer dismissed the warning code or failed to inspect the engine properly.
KSDS ECU upgrade installed per TSB PI2002B; if P1326 active, engine inspection and bearing/short-block replacement as warranted
Fuel smell, visible fuel leak from engine bay, fuel puddle under vehicle, potential engine fire after prior engine replacement under warranty or recall
A dealer-caused defect following a recall repair that creates a new safety hazard (fuel leak/fire) is itself grounds for a lemon-law claim. Owners who had repeated fire-risk issues after receiving recall repair may have compounded claims.
Dealer inspects fuel pipe connection; replaces fuel pipe if leak detected; no charge to owner
Vehicle stolen using USB cable and screwdriver inserted into ignition cylinder (no key needed); theft deterrent system easily defeated; steering column damage from theft attempts
Theft or theft-attempt damage resulting from the known immobilizer omission may support claims where the vehicle was substantially impaired. Owners who suffered repeated theft attempts, total theft, or steering column damage may have lemon-law or consumer protection claims.
Free anti-theft software upgrade (Kia Service Campaign 993) at authorized Kia dealer; update requires key fob unlock before ignition operates; window decal installation included
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Foreign material and moisture contamination on the tow hitch harness module printed circuit board (PCB) may cause an electrical short, resulting in a fire near the tow hitch area while driving or parked (ignition off).
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Electrical circuit in the Hydraulic Electronic Control Unit (HECU) may short-circuit due to excess current through 40A fuses, increasing risk of engine compartment fire while driving or parked.
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High pressure fuel pipe connecting to the fuel pump outlet may have been damaged, misaligned, or improperly torqued during engine replacement procedure (performed under prior recall 17V-224 or KSDS campaign), potentially causing a fuel leak.
Every item below comes from this vehicle's documented defects. The more you recognize, the more a free case review is worth your time.
California's Song-Beverly Consumer Warranty Act applies to Sportage models purchased or leased new in California. Under the law, a manufacturer is legally presumed to have failed to repair a defect if: (a) the same safety-related defect has been subject to two or more unsuccessful repair attempts; (b) the same non-safety defect has been subject to four or more unsuccessful attempts; or (c) the vehicle has been out of service for 30 or more cumulative days during the warranty period for warranty-covered repairs. A fire-risk recall is a safety defect by definition. Owners who experienced ABS warning lights, burning smells, or an actual fire before the HECU remedy was applied — or who have a tow hitch harness recall still open — may have grounds for a lemon law claim after as few as two unsuccessful or incomplete repair attempts. Engine failures under the Theta II defect, or repeated oil consumption repairs within the warranty period, qualify as substantial impairments under separate grounds. If you prevail, Kia is required by law to pay your attorney's fees — meaning a qualified California lemon law case typically costs the owner nothing. The above is general information only and not legal advice; results depend on the specific facts of your case.
“Could not duplicate” doesn't mean the defect isn't real. Here's exactly what to do to protect a potential California lemon-law claim.
Document the moment it happens. Photos, video, and screenshots of any warning lights — with the date and the mileage.
Get a repair order every visit — even “found nothing.” That paperwork is the foundation of a claim.
Check your VIN at nhtsa.gov/recalls. Note any recall that has no available remedy yet.
Track your out-of-service days. California law counts the cumulative days your vehicle spends in the shop.
Keep loaner & rental records. Alternate-transport paperwork during long repairs matters.
Save everything in one place. Symptoms, dates, repair orders, and every repeat visit — the intermittent ones especially.
A repair order that says 'could not duplicate' (CND) or 'no trouble found' (NTF) is not a loss — it is still a documented repair attempt under California law. The date, mileage, and your complaint description are all on record. Here is how to build the strongest file: 1. For any fire-risk concern: before your visit, write down the exact symptom (burning smell, ABS light on, smoke location), the date, and the mileage. Ask the service advisor to confirm in writing on the repair order whether your VIN falls within the HECU recall population (21V137, 2017-2021 without SCC) or the tow hitch harness recall population (22V703, 2017-2022 with Genuine Kia tow hitch harness). If your recall remedy has not been performed, the out-of-service days while waiting count toward California's 30-day lemon law threshold. 2. For engine problems: ask whether KSDS software (PI2002B) has been installed, and if so, whether DTC P1326 was present. Ask whether the dealer performed the formal oil consumption test per TSB ENG222 Rev 6. If the dealer tells you to 'keep an eye on the oil level' without opening a service order for ENG222, request the TSB by number and insist it be documented. A P1326 activation after KSDS installation typically signals imminent bearing failure; that event on a repair order is strong evidence. 3. For post-recall fuel pipe issues: if you received an engine replacement under the Theta II recall and later smelled fuel, make sure the service order references recall 18V907 (SC172 expansion) and notes whether the high-pressure fuel pipe was inspected and replaced. 4. Keep every repair order, recall notification mailer, loaner agreement, and rental car receipt. All out-of-service days for warranty repairs accumulate toward California's lemon law threshold.
The 2017-2022 Kia Sportage QL carries a documented fire-risk record that is unusually broad: two separate park-outside advisories, two distinct fire mechanisms (the ABS/HECU module and the tow hitch harness), and a collective population of nearly 400,000 vehicles in the United States. On top of that, the Theta II engine defect — acknowledged by Kia through a federal consent order and a class-action settlement — affected a significant share of the 2017-2020 powertrain lineup. If your Sportage has been back to the dealer for any fire warning, ABS light, engine oil consumption, or limp mode — and especially if those issues persist after a repair visit — California's lemon law may entitle you to a full repurchase or comparable replacement vehicle. A free case review costs nothing and gives you a clear answer.
— The Margarian Law team
Has your 2017-2022 Kia Sportage been in for an ABS warning light, a burning smell, or repeated engine problems — more than once? Are you waiting on a fire recall repair that has not been completed? Under California's lemon law, you may be entitled to a full repurchase or replacement vehicle, with Kia covering your attorney's fees. Contact Margarian Law for a free, no-obligation case review.
Likely yes, if your 2017-2021 Sportage is not equipped with Smart Cruise Control (SCC). NHTSA recall 21V137 (Kia campaign SC206) covers approximately 372,251 Sportage units from the 2017-2021 model years. The defect: the Hydraulic Electronic Control Unit (HECU) in the ABS braking system can develop an internal electrical short, and the factory 40-amp fuses allow enough current through the HECU circuit board to start a fire — while the vehicle is parked or driving. NHTSA issued a public consumer alert directing owners to park outside and away from structures until the dealer installs lower-amperage fuses. Vehicles with SCC are excluded because they use a different HECU design. Check your VIN at nhtsa.gov or ask your dealer to run an open-recall check. If the recall remedy has not been performed, any day your vehicle sits unrepaired at the dealer counts toward California's lemon law out-of-service threshold.
Yes, if the harness is a Genuine Kia-brand accessory. NHTSA recall 22V703 (Kia campaign SC249) covers 22,052 Sportage units from model years 2017-2022 that were fitted with the Genuine Kia tow hitch harness. Moisture and foreign material on the harness module's printed circuit board can cause an electrical short and start a fire — including when the ignition is completely off. Kia confirmed at least four vehicle fires and 31 localized melting incidents before issuing the recall. NHTSA issued a park-outside advisory. The remedy is replacement of the tow hitch harness module and installation of a new lower-capacity fuse. If your harness has not been replaced and you park indoors, the fire risk remains present regardless of whether the engine is on.
Yes. The 2.4L GDI (Theta II) and 2.0L T-GDI engines used in 2017-2020 Sportage models have a documented defect involving piston oil-control rings that stick due to carbon deposits, allowing oil to burn off in the combustion chamber. At a deeper level, manufacturing debris in Theta II crankshaft oil passages can erode connecting rod bearings, leading to oil starvation and eventual engine failure. Kia issued TSB ENG222 (Rev 6) to standardize the oil consumption test and authorize short-block or long-block replacement when consumption exceeds the threshold. If the dealer tells you to 'keep monitoring it' without performing the ENG222 oil consumption test, ask for that TSB by number. The broader Theta II defect resulted in a federal consent order between NHTSA and Kia (RQ17-003, November 2020) and is part of a $1.3 billion class-action settlement covering 2011-2019 model years.
A continuously blinking check engine light combined with limp mode (engine limited to about 1,800 RPM) and diagnostic code P1326 is the Knock Sensor Detection System (KSDS) telling you that the connecting rod bearings in your Theta II engine are showing wear. Kia installed the KSDS software via TSB PI2002B on 2017-2018 Sportage models as an early-warning system — it detects the vibration signature of bearing wear before the engine seizes completely. When P1326 activates, the engine needs to be inspected immediately. Do not clear the code without a proper inspection; bearing failure can happen quickly once KSDS triggers. The KSDS software is a detection tool, not a repair — the underlying bearing defect still exists. If your engine has failed or needed replacement after a P1326 event, and the vehicle was within the warranty period, that is a documented repair attempt toward a lemon law claim.
You may qualify under California's Song-Beverly Consumer Warranty Act if your Sportage was purchased or leased new in California. The law creates a legal presumption that a vehicle is a lemon when the manufacturer has had two or more unsuccessful repair attempts for a safety-related defect, four or more attempts for any other substantial defect, or the vehicle has been out of service for 30 or more cumulative days during the warranty period. The HECU fire recall and the tow hitch harness fire recall both qualify as safety defects — a documented park-outside advisory from NHTSA is strong evidence of that classification. Theta II engine failures and repeated oil consumption repairs within the warranty period are separate, substantial impairment grounds. If you prevail, Kia is required to pay your attorney's fees — most California lemon law cases cost the owner nothing out of pocket. This is general information only and not legal advice; outcomes depend on the specific facts of your case.
No. A 'could not duplicate' or 'no trouble found' result on a repair order is still a documented repair attempt under California lemon law. The visit date, mileage, and your complaint are on record, and the days your vehicle spends at the dealer accumulate toward the 30-day out-of-service threshold. To protect your case: (1) Before every visit, photograph any warning lights and write down the exact symptom, date, mileage, and conditions. HECU shorts and ISG-related fires can be intermittent. (2) Ask the service advisor to confirm in writing whether your VIN is within recall 21V137 or 22V703 and whether the remedy has been applied. (3) For engine issues, request the ENG222 oil consumption test by TSB number and ask whether KSDS (PI2002B) has been flashed. If symptoms persist after those procedures, that is a documented failed repair attempt. (4) Keep every repair order, recall notification, and loaner car record — all of it is evidence.