2016 Kia Soul: engine overheating

Filed Aug 21, 2026 · Engine · CO

My 2016 Kia Soul with the 1.6L GDI engine lost power. On 08/21/2026 at 107,547 miles I took it to Grand Kia, 1950 West 104th Avenue, Thornton, Colorado, repair order 137483, service advisor Patricia Palmas. The dealer performed a cylinder compression test and a leak-down test and documented on the repair order that the engine has scored cylinder walls, with cylinder number 3 identified as the affected cylinder. They also performed a rod bearing clearance test, which passed. They pulled down the exhaust to inspect the downstream catalytic converter and recorded that inspection as okay. They noted new spark plugs with no signs of fouling. Despite recording scored cylinder walls on their own repair order, the dealer told me the vehicle was fine and took no further action. No diagnostic trouble code was present. I was not given a written reason for the refusal, no technical assistance or Techline case was opened that I am aware of, and no engine inspection under any campaign was offered. I was charged nothing and sent away with a vehicle that has documented internal engine damage. This vehicle is within the population covered by Kia safety recall SC176 (the federal safety agency campaign 19V120), which covers all 2012-2016 model year Souls with the 1.6L GDI engine. That recall describes a failure mode in which the catalytic converter is damaged by overheating, substrate particles enter the engine combustion chamber, and continuous abnormal combustion results in damage to one or more of the engine's pistons, which can cause connecting rod breakage and puncture the engine block, allowing oil to contact hot exhaust surfaces. The stated remedy includes upgrading the ECU logic, replacing the catalytic converter if damaged, and replacing the engine depending on the extent of damage. Scored cylinder walls on a single cylinder is consistent with the damage mechanism that recall describes. The recall states there are no restrictions on owner eligibility. Nevertheless, no evaluation under SC176

Filed Aug 12, 2026 · Engine · 59,242 miles · CA · 1 injury

The contact's grandmother owns a 2016 Kia Soul. The contact stated that while his grandmother was driving at an undisclosed speed, the engine overheated. No warning lights were illuminated. The contact stated that due to the failure and the outside temperatures, his grandmother was stuck inside the inoperable vehicle. The contact's grandmother sustained a heat stroke while waiting for assistance. The contact's grandmother was transported to the hospital. The vehicle was taken to Firestone, where DTC: P0420 and P0302 were retrieved. The contact was informed that the codes indicated an engine misfire. While driving to Firestone, the failure reoccurred, and the vehicle stalled. The contact was advised to take the vehicle to the dealer for assistance. The vehicle was towed to the dealer; however, the failure was not duplicated. In addition, the vehicle was repaired under the federal safety agency Campaign Number: 19V120000 (Engine, Engine and Engine Cooling); in 2021. The manufacturer was made aware of the failure, and a case was filed. The failure mileage was approximately 59,242.

Filed Apr 26, 2026 · Engine, Fuel system · GA

I am reporting a safety concern related to the federal safety agency Recall 19V120 involving my Kia Soul. The recall identifies a defect related to catalytic converter overheating, which can lead to engine damage, stalling, and increased risk of fire. My vehicle is currently experiencing an illuminated check engine light and unsafe driving conditions. During service evaluation at Kia of Columbus, I was informed that my vehicle has a catalytic converter blockage contributing to these issues. However, I was also told that my vehicle does not qualify for recall repair because no engine code was detected during diagnostics. This is concerning, as the vehicle is actively exhibiting symptoms consistent with the recall condition, including a confirmed catalytic converter issue and an illuminated malfunction indicator lamp. Despite this, I was denied full recall coverage and instead offered a goodwill repair requiring me to pay 50% of the cost. I believe this situation represents a failure to properly apply recall criteria and raises concerns regarding customer safety, as the vehicle may be at risk for engine failure or fire. I am requesting further review of this matter and investigation into the handling of this recall by the servicing dealership.

Filed Apr 8, 2026 · NY

Complaint Summary: Post recall catalytic converter failure on 2016 Kia Soul with 1.6L GDI engine (SC176 recall previously performed). Complaint Details: I own a 2016 Kia Soul equipped with the 1.6 liter Gamma GDI engine (engine code G4FD, emissions family GKMXV01.6DBE). This engine is part of Kia’s SC176 recall for catalytic converter overheating and thermal damage. My dealer performed the SC176 ECU software update in May 2019, but did not replace the catalytic converter at that time because the P0420 code had not yet appeared. In early 2026, my catalytic converter failed with a P0420 “Catalyst Efficiency Below Threshold” code. My mechanic confirmed the converter was internally damaged. This failure is consistent with the known SC176 defect, where converters can be partially damaged before the ECU update and fail later. Kia and the dealer refused to replace the converter under the recall, stating that because the P0420 code did not appear in 2019, the converter is no longer covered. I was forced to pay $2,781.91 out of pocket for a new catalytic converter, exhaust manifold, and oxygen sensors. The diagnostic test was another $120 plus tax. This appears to be a case where the converter was already compromised by the SC176 defect prior to the software update, but the failure occurred later. I am requesting that the federal safety agency document this issue, as it suggests the recall remedy may not fully address pre existing catalyst damage and may leave owners with significant repair costs. VIN: [XXX] Mileage at failure: ~90,000 miles Engine: 1.6L Gamma GDI (G4FD) Recall: SC176 (ECU update performed, converter not replaced) INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Jan 24, 2026 · Engine, Fuel system · FL

While driving on a road trip from Charleston, South Carolina to Florida in January of 2023 the factory installed catalytic converter failed (front facing) clogging the exhaust system and damaging the engine (engine now experiences blow by and pistons rings have been damaged). A recall for the overheating of the catalytic converter was marked as repaired before I bought the car. However, I believe that either the update was not done to the on-board computer or that a damaged catalytic converter was not replaced. This directly led to the subsequent failure in question and has since damaged my engine. At the time of the incident, an investigation of both catalytic converters revealed heavy sediment deposits and the core of the filtering component of the front facing unit had become so corroded that a chunck of it had broken loose and become lodged in the connecting hose that linked it to the rest of the exhaust system, leaving the entire system blocked. Because I bought the car used, I wasn't aware of the recall history at the time of purchase. Nor was I given a vehicle history report or receipts for any work that had previously been done. When I pulled a vehicle history report shortly after the incident I was unable to accertain what the actual repairs to the car were previous to my ownership, just that it had been taken to a Kia dealership for service with dates listed. The issues still remain and I am unable to afford the lengthy and very expensive repairs suggested by multiple mechanics to correct them. I also still owe money on the note as the result of having to deal with a predatory business to secure financing in the first place. I hate to think I was taken advantage of but I can't help but feel like the catalytic converter should have been changed during that previously marked recall repair and clearly wasn't. Please help me figure out what went wrong here and if possible help me remedy this situation, especially if there was indeed fraud involved. Thank you

Filed Nov 17, 2025 · Engine · CA

While driving my 2016 Kia Soul on the highway, the vehicle suddenly began shaking and immediately lost power. The check engine light came on and the car would not accelerate, even when pressing the gas pedal. This happened with no prior warning. I had to coast to the shoulder in moving traffic, which created a safety concern. The engine then stalled completely and would not restart. The vehicle was towed to Findlay Kia in Las Vegas. Their technicians diagnosed a major internal engine failure. The repair report shows zero compression in cylinder 2, a cracked intake valve, oil contamination, and extensive internal engine damage requiring a full engine replacement. Diagnostic trouble codes included P0300, P0302, P0303, and P0326. There were no earlier symptoms, no overheating, and the vehicle has been properly maintained. The failure was sudden and left the car completely inoperable. I opened Case #[XXX] with Kia Corporate. They reviewed all documents, service records, and the dealer’s findings. Although they did provide assistance in reviewing the case, the final outcome was not in my favor, and they declined to cover the repair. This is concerning given the history of engine-related issues and recalls involving Kia Souls from similar model years, particularly involving sudden engine failure and loss of power. My vehicle remains inoperable at the Kia dealership. The sudden loss of power while driving presents a clear safety risk. Based on my experience and the dealership’s findings, I believe this engine failure is safety-related and should be evaluated further by the federal safety agency. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Oct 21, 2025 · Engine · ME

Catalytic converter may become damaged due to overheating caused by and excessive increase of exhaust gas temperatures.

Filed Jul 28, 2025 · Engine · 110,000 miles · OH

The contact owns a 2016 Kia Soul. The contact stated while driving at an undisclosed speed, the check engine warning light illuminated and the engine overheated. The contact turned off the vehicle and allowed the engine to cool down. The contact performed an inspection under the hood and noticed that the oil pressure was low. The contact drove the vehicle to the nearest gas station and added oil. The contact stated that the check engine warning light then turned off; however, two days later, the failure reoccurred. The contact stated that the vehicle was consuming an excessive amount of oil and oil needed to be added every two to three days. The vehicle was taken to the dealer; however, the vehicle was not diagnosed. The contact was informed that the engine needed to be replaced. The contact stated that in March 2025, the catalytic converter failed and was replaced. The contact stated that due to the failure, the vehicle had been taken to several dealers and independent mechanics for diagnostic testing. The independent mechanic informed the contact that, upon inspecting the spark plugs and the pistons, there was oil residue was visible on the spark plugs and pistons; however, there was no visible indication of an oil leak. The manufacturer was made aware of the failure but provided no assistance. The contact referenced a recall; however, the VIN was not under recall. The failure mileage was approximately 110,000.

Filed Apr 22, 2025 · Engine · MI

About a year ago I got my car serviced for the recall that was due to a potential issue with the catalytic converter overheating. High exhaust gas temperatures could damage the catalytic converter, potentially leading to abnormal engine combustion, piston damage, and even a fire. As of today 4/22/2025 I was told my catalytic converter needs to be replaced. I first noticed a check engine light 12/20/2024 and I got the code read from my local AutoZone. The code came back my catalytic converter. After doing some research I seen an active recall which I described as above. I scheduled an appointment at my local Kia Dealership which is also where I go the car. They got me in 01/2025 to service the recall. Here i am just a year past the recall and I've been told I need a whole new catalytic converter which is going to run me just over $1300.

Filed Feb 21, 2025 · Engine · 111,000 miles · GA

The contact owns a 2016 Kia Soul. The contact stated that while driving at an undisclosed speed, the temperature gauge indicated that the vehicle was overheating, and the vehicle lost motive power. The contact was able to pull to the shoulder of the roadway, where the vehicle was able to restart. The check engine warning light was illuminated. The vehicle was towed to an independent mechanic, who diagnosed a failure with the catalytic converter. The vehicle was not repaired. After investigating the failure, the contact related the failure to the federal safety agency Campaign Number: 19V120000 (Engine, Engine and Engine Cooling); but the VIN was not included. The manufacturer was notified of the failure, and a case was opened. The failure mileage was 111,000.

Filed Jan 30, 2024 · Engine · 95,000 miles · NC

The contact owns a 2016 Kia Soul. The contact stated while driving 30 MPH, there was an abnormally loud sound coming from the catalytic convertor. The contact received notification of the federal safety agency Campaign Number: 19V120000 (Engine and Engine Cooling), and the vehicle was taken to a local dealer, where it was diagnosed that the Catalytic Overheating Protection Engine Control Unit logic needed to be replaced. The vehicle was repaired; however, the check engine warning light remained illuminated. Additionally, the vehicle failed to start. The contact stated that the catalytic convertor had failed. The local dealer was contacted, but the vehicle was not diagnosed or repaired because the warranty had expired. The manufacturer was made aware of the failure The failure mileage was approximately 95,000.

Filed Oct 16, 2023 · Engine · PA

Catalytic converter is overheating resulting in a check engine light. The code is P0420.