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2021 Kia Sorento Engine Seizing Recall: What Drivers Need to Know

By ClearTheCode · Published 2026-05-31 · ~9 min read

Concerned about the 2021 Kia Sorento engine seizing recall? Understand the symptoms, causes, and steps to take to protect your vehicle and ensure safety.

At a glance

Difficulty
6/10 — Moderate
Est. repair cost
$100 – $900 (parts + typical shop labor)
OEM tooling
Standard OBD-II scanner and hand tools
Common symptoms
  • Metallic Knocking Sound: A distinct metallic knocking or tapping sound
  • often described as a "rod knock
  • " that typically
  • Reduced Engine Performance: The engine may feel noticeably sluggish
  • lack its usual power
  • or struggle to accelerate

Many 2021 Kia Sorento owners are understandably worried about the potential for engine seizing, a serious issue that has led to significant recalls for certain Kia models. This article will help you understand if your 2021 Sorento might be affected, what symptoms to look for, and the steps to take to address this critical concern, ensuring your vehicle's safety and longevity.

What drivers notice on this 2021 Kia Sorento

Drivers experiencing potential engine issues in their 2021 Kia Sorento often report a range of concerning symptoms that can indicate severe internal engine problems, including:

  • A loud, persistent knocking or ticking noise coming from the engine, especially noticeable during acceleration or when the engine is under load.
  • A noticeable reduction in engine power, causing the vehicle to feel sluggish or hesitate when accelerating.
  • Excessive engine oil consumption, requiring frequent top-offs between scheduled oil changes.
  • The illumination of the check engine light (CEL) on the dashboard, sometimes accompanied by specific diagnostic trouble codes.
  • The engine stalling unexpectedly, particularly at low speeds, while idling, or when coming to a stop.
  • In severe cases, a complete engine failure, rendering the vehicle inoperable or unable to start.

At a glance: difficulty, repair cost, and diagnostic workflow

  • Difficulty Rating: 6/10 — Moderate
  • Common Symptoms: Metallic Knocking Sound: A distinct metallic knocking or tapping sound, often described as a "rod knock," that typically; Reduced Engine Performance: The engine may feel noticeably sluggish, lack its usual power, or struggle to accelerate, in; Check Engine Light (CEL): An illuminated check engine light is a critical warning. It may be accompanied by specific dia; Excessive Oil Consumption: A significant and sudden increase in how often you need to add engine oil, without any visibl
  • Estimated Repair Cost: $100–$900 (parts + typical shop labor)
  • OEM Tooling Required: Standard OBD-II scanner and hand tools

Diagnostic workflow:

  1. Confirm the symptom on your vehicle.
  2. Scan for stored or pending codes with an OBD-II tool.
  3. Inspect the most common causes in this guide (visual checks first).
  4. Run verification tests before replacing parts.
  5. Repair, clear codes, and verify on a test drive.

Symptoms and warning signs

Being vigilant for these specific warning signs can help you identify a potential engine issue in your 2021 Kia Sorento before it leads to a complete failure:

  • Metallic Knocking Sound: A distinct metallic knocking or tapping sound, often described as a "rod knock," that typically becomes louder and more pronounced as engine RPMs increase or when the engine is under load.
  • Reduced Engine Performance: The engine may feel noticeably sluggish, lack its usual power, or struggle to accelerate, indicating internal friction or damage.
  • Check Engine Light (CEL): An illuminated check engine light is a critical warning. It may be accompanied by specific diagnostic trouble codes (DTCs) related to engine misfires or abnormal crankshaft rotation, such as P1326.
  • Excessive Oil Consumption: A significant and sudden increase in how often you need to add engine oil, without any visible external leaks, is a major red flag for internal wear.
  • Blue Smoke from Exhaust: The presence of blue-tinted smoke emanating from the exhaust pipe indicates that the engine is burning oil, a sign of internal component wear.
  • Engine Stalling or Difficulty Starting: The engine may stall unexpectedly, particularly at low speeds or idle, or you might experience difficulty starting the vehicle.

How to verify and confirm the issue

If you suspect your 2021 Kia Sorento might be experiencing engine issues, follow these steps to verify and confirm the problem:

  • Check for Active Recalls: The most crucial first step is to check if your specific 2021 Kia Sorento is subject to an active engine recall. You can do this by entering your Vehicle Identification Number (VIN) on the National Highway Traffic Safety Administration (NHTSA) website or Kia's official recall portal. This can determine if your vehicle is eligible for a free repair or replacement.
  • Listen for Abnormal Noises: Pay close attention to any new or unusual knocking, ticking, or grinding sounds coming from the engine compartment, especially when the engine is cold, or under acceleration.
  • Monitor Engine Oil Levels: Regularly check your engine oil dipstick. A significant or sudden drop in oil level without any visible external leaks is a strong indicator of internal engine oil consumption.
  • Scan for Diagnostic Codes: Use an OBD-II scanner to check for any stored or pending diagnostic trouble codes. A common code associated with these engine issues, particularly related to connecting rod bearing wear, is P1326 (Knock Sensor Detection System).
  • Observe Engine Performance: Note any consistent loss of power, hesitation during acceleration, or rough running that deviates from your vehicle's normal operation.
  • Professional Inspection: If any of these symptoms are present, or if your vehicle is part of an active recall, it is imperative to have a qualified technician perform a thorough inspection. This may involve advanced diagnostics like oil analysis, compression tests, or bore-scoping the cylinders to identify internal damage.

Common causes (most likely first)

The engine seizing issues in certain Kia models, including concerns for the 2021 Sorento, are primarily attributed to specific manufacturing and design flaws:

  • Connecting Rod Bearing Failure: This is the most frequently cited cause for engine seizing in these particular engines. The connecting rod bearings, which allow the connecting rods to rotate smoothly around the crankshaft, can wear prematurely. This leads to increased friction, metal-on-metal contact, and eventual catastrophic engine damage or seizure.
  • Manufacturing Defects: Specific batches of engines may have contained inherent flaws in the manufacturing process. These defects could include inadequate lubrication passages, improper machining tolerances, or the use of substandard materials that compromise the long-term durability of critical engine components.
  • Oil Sludge and Lubrication Issues: While less common in newer vehicles that receive regular maintenance, severe oil degradation, infrequent oil changes, or blockages within the oil passages can exacerbate bearing wear by restricting proper lubrication to vital engine parts.
  • Engine Control Unit (ECU) Software Issues: In some instances, the engine control unit's software has been updated to enhance the sensitivity of the knock sensor. This allows the system to detect early signs of bearing wear or other internal engine issues, potentially preventing more severe damage.

Step-by-step diagnosis and fixes

Addressing a potential engine seizing issue in your 2021 Kia Sorento requires a methodical approach, with the primary focus on safety and professional intervention:

  • Step 1: Verify Recall Status. The absolute first step for any 2021 Kia Sorento owner with concerns is to immediately check your VIN on the official Kia recall website or the NHTSA database. This will determine if your vehicle is covered by an existing recall campaign related to engine issues.
  • Step 2: Document Symptoms. Keep a detailed record of any unusual noises, performance issues, warning lights, or changes in oil consumption. This information will be crucial for the diagnostic process at the dealership.
  • Step 3: Check Engine Oil. Ensure your engine oil is at the proper level and note its condition (color, consistency). Low oil levels or severely degraded oil can contribute to or exacerbate engine problems.
  • Step 4: Scan for Codes. If you have access to an OBD-II scanner, pull any diagnostic trouble codes. The presence of codes like P1326 is a strong indicator of potential internal engine damage and should prompt immediate action.
  • Step 5: Contact Kia Dealership. If your vehicle is under recall or exhibiting any of the concerning symptoms, schedule an appointment with a Kia dealership without delay. Inform them of your concerns and any recall status you've verified.
  • Step 6: Follow Dealership Recommendations. The dealership will perform specific diagnostic procedures to pinpoint the root cause of the issue. Based on their findings, they will advise on the appropriate repair, which, if covered by a recall or warranty, may involve engine inspection, repair, or a complete engine replacement.

Repair options and cost factors

When facing a potential engine seizing issue in your 2021 Kia Sorento, the repair options and associated costs vary significantly based on recall coverage and the extent of the damage.

  • Recall/Warranty Replacement: For vehicles confirmed to be part of an eligible recall campaign or still covered under Kia's comprehensive powertrain warranty, the ideal outcome is that the engine replacement or repair will be covered at no cost to the owner. This is why checking your VIN for recalls is paramount.
  • Engine Replacement (Out-of-pocket): If your vehicle is not covered by an active recall or is outside of its warranty period, replacing a seized engine is a major, costly repair. The total cost can range significantly based on whether a new, remanufactured, or used engine is installed. A new or high-quality remanufactured engine, including parts and extensive labor, can easily cost $5,000 to $10,000 or more.
  • Short Block/Long Block Repair: Depending on the exact nature and extent of the internal damage, sometimes a

Frequently asked questions

How urgent is this problem?

If symptoms are worsening or safety systems are affected, diagnose soon; minor issues can often wait for a scheduled service visit.

Can I drive with this issue?

Short trips may be acceptable for some faults, but stop driving if you notice overheating, loss of braking, steering problems, or strong fuel smells.

Do I need a dealer scan tool?

A basic OBD-II scanner helps confirm codes; some steps still need visual checks and meter tests described above.

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