2020-2022 Kia Sportage Engine Control Module (ECM): Programming and Knock Sensor Facts
This guide covers the critical details of replacing the ECM in your 2020-2022 Sportage, including mandatory programming and important software updates.
- A replacement ECM for a 2020-2022 Kia Sportage MUST be programmed to the vehicle's VIN and anti-theft system.
- Ensure any replacement ECM has the latest Knock Sensor Detection System (KSDS) software update to monitor for engine bearing wear.
- Always match the OEM part number exactly (e.g., 39171-2GRD1, 39171-2GRD2) when purchasing a used module.
- Before replacing the ECM, rule out simpler issues like bad sensors or wiring problems, as true ECM failure is less common.
Symptoms of a Failing ECM
A faulty ECM in a 2020-2022 Kia Sportage can cause a variety of issues, which can sometimes be mistaken for other problems. Here are the most common signs of a failing module:
- Check Engine Light: An illuminated Check Engine Light is the most common symptom. If the light is flashing, it indicates a serious problem, like a misfire, that requires immediate attention.
- Engine Performance Issues: You may experience engine stuttering, misfires, rough idling, or sudden stalling. 🎬 Watch: Common causes for engine misfires on Kia Sportage models. This can be due to the ECM failing to regulate the air-fuel mixture correctly.
- No-Start Condition: The vehicle may crank but fail to start, or not start at all. This can happen if the ECM is not properly controlling the fuel and spark systems.
- Reduced Fuel Economy: A sudden, noticeable drop in gas mileage can indicate that the ECM is not managing the engine's fuel consumption efficiently.
- Erratic Transmission Shifting: The ECM often works with the transmission control module. A faulty ECM can sometimes cause issues with automatic transmission shifting.
Known Issues, TSBs, and Recalls
Knock Sensor Detection System (KSDS) Update
Many Kia vehicles, including the 2020 Sportage, are part of a significant product improvement campaign to install Knock Sensor Detection System (KSDS) software. This is not a recall for a faulty ECM, but a crucial software update performed by dealers. The KSDS is designed to detect engine vibrations that may indicate premature connecting rod bearing wear. If it detects a problem, it will put the vehicle into a low-power "Limp Home Mode" and trigger a specific trouble code (P1326) to prevent severe engine damage. It is important to understand that this software does not prevent the underlying cause of engine failure but acts as an early warning system. Any replacement ECM will need to have this software installed or updated by a dealer.
Recall SC206 / NHTSA 21V-137: HECU Fire Risk
While not a direct recall of the ECM, certain 2017-2021 Sportage models were recalled for a fire risk originating from the Hydraulic Electronic Control Unit (HECU), which controls the anti-lock brakes. An electrical short in the HECU could cause a fire in the engine compartment, potentially damaging the ECM and its wiring. The remedy involves dealers replacing fuses and, in some cases, performing a software update. It's crucial to ensure this recall has been performed on your vehicle.
Warning: A replacement ECM, whether new or used, absolutely requires programming to the vehicle. It is not a plug-and-play part. The vehicle will not start or run correctly without this step.
Buying a Used Engine Control Module (ECM)
Purchasing a used ECM can be a cost-effective solution, but careful verification is essential. Here’s what to look for:
- Match Part Numbers Exactly: The most critical step is to match the OEM part number from your original ECM to the used unit. Part numbers for this range include 39171-2GRD1 and 39171-2GRD2. There may be different part numbers depending on production date, engine size (2.4L), and drivetrain (AWD). For example, 39171-2GRD1 was used on models built up to 05/01/2020, while 39171-2GRD2 was used on models from 05/01/2020. Always verify the part number on the physical unit.
- Physical Inspection: Check the used ECM for any signs of physical damage, especially to the connectors and casing. Look for corrosion, bent pins, or evidence of water intrusion.
- Plan for Programming: A used ECM must be reprogrammed by a Kia dealership or a qualified independent shop with the proper diagnostic tools (like a Kia GDS or a J2534 pass-thru device). This process syncs the module to your vehicle's VIN and anti-theft immobilizer system. 🎬 Watch: How a Kia ECU is cloned to a donor unit. Factor in the cost of programming when buying a used part.
- Source with a Warranty: Whenever possible, buy from a reputable seller who offers a warranty. This provides protection in case the part is non-functional, even after programming.
Cost Breakdown
Prices can vary based on your location and the specific retailer or repair shop. Here is a general cost comparison:
| Part Type | Estimated Cost |
|---|---|
| New OEM | $1,100 - $1,700 |
| Remanufactured | $300 - $600 |
| Used OEM | $75 - $250 |
| Shop Labor (Installation & Programming) | $150 - $300 |
Pro Tip: Before condemning the ECM, have a professional mechanic rule out other potential causes like faulty sensors, wiring issues, or power supply problems. ECM failure is less common than the failure of the components it communicates with.
Frequently Asked Questions (FAQ)
Do I have to take my Sportage to a Kia dealer for ECM programming?
While a Kia dealership is the most certain option, some well-equipped independent repair shops with advanced diagnostic tools and access to Kia's technical information may be able to program a replacement ECM. However, due to the link with the anti-theft system, many shops may defer to the dealer. Always call ahead to confirm a shop's capabilities.
Where is the ECM located on the 2020-2022 Kia Sportage?
The ECM is located in the engine compartment, typically found behind the driver's side headlamp assembly.
What is the difference between part numbers 39171-2GRD1 and 39171-2GRD2?
These part numbers represent different revisions of the ECM. Part number 39171-2GRD1 was generally used for models built up to May 1, 2020, while 39171-2GRD2 was used for models built after that date. It is crucial to match the part number exactly or use a verified superseded part number when replacing the module.
Can I use an ECM from a Sportage with a different engine or drivetrain?
No. The ECM is programmed specifically for the vehicle's configuration, including the engine size (e.g., 2.4L), transmission type, and drivetrain (FWD or AWD). Using an incorrect ECM will cause performance issues or prevent the vehicle from starting altogether.
Helpful Videos
Technical Specifications
OEM Part Numbers: 391712GRD1 391712GRD2 39171-2GRB2
Fits 2020-2022 Kia Sportage with 2.4L engine. Location: Engine bay, behind driver's side headlamp.
We Have This Part in Stock
The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- Kia SPORTAGE:
- Kia Sportage: