2017 Kia Cadenza problems

“COMPONENT: Engine oil pressure sending unit/switch (part 94751-3C000, per Kia repair shop) or the oil pressure system on my 2017 Kia Cadenza 3.3L V6, about 95,500 miles. The car and any removed part are available for inspection on request. SYMPTOM/WARNING: The oil pressure warning light first appeared in October 2026 and comes on intermittently when the engine is warm and the car is stopped or idling, then goes off once moving. It is becoming more frequent. No other lamps, messages, noises, or leaks. The engine runs quietly, confirmed by Kia repair shop. No crash, fire, or injury. SAFETY RISK: I cannot tell whether the sensor is faulty or oil pressure is truly low. If pressure is low, the engine could be damaged or fail while driving in traffic. If the sensor is faulty, the light is unreliable. CONFIRMATION: Dipstick level has been normal. Oil was changed 06/13/2026 and 10/06/2026; the light lessened, then returned. A Kia dealer inspected the car and recommended replacing the sending unit, quoted at $3,060.72 since the intake manifold must be removed. The dealer has NOT measured oil pressure and says it can only do so during that repair. An independent shop has…”

“The vehicle harness is burned and under recall sc206 for HECU fuses that was allegedly repaired which should have required a check of the harness connections . part number 91223f6632 is for the wire harness during engine replacement for campaign wty039 I was told the harness was melted and needed replacing , dealer put the car back together and told me we had to wrap up the work and return rental and get my car knowing it is a fire hazard I was in contact with warranty company for escalation who would not cover the recall part according to the dealer , I am still in escalations with Kia I have been left with no vehicle .engine repair was completed via dealer ,but they have reinstalled the broken harness and told me the car is ready for pick up. I am a disabled woman with small children and do not want to burn up in a fire was advised to report to dmv and nhtsa”

“I have and am the original owner of a Kia Cadenza 2017 with the 3.3L Lambda engine (same engine as the Sorento lawsuit). The vehicle is currently at the dealership getting repaired due to carbon buildup causing the fuel injectors to malfunction( despite of consistently being on top of maintenance and oil changes).I have read online of lots of users with failed engines due to carbon buildup in these engines. The warning lights I got were p0171,p0174, and p0191, and am worried that after the repair the engine will eventually fail due to the buildup as the main issue isn’t properly being addressed. The issue occurred about 300 miles ago where the dealership erased it. Then told the vehicle did not have any issues. Brought it back to the Kia dealership where they finally gave a proper diagnosis after being told nothing was wrong with car. I am concerned as there are lots of owners online experiencing the same issues with their Kia cadenzas and nothing done about it. Took the vehicle in after it stalled in traffic, but, as seen, the repair cost is high and a temporary band aid.”

“BOUGHT A LEFT OVER 2017 KIA CADENZA IN JULY OF 18,WITHIN FIRST 10,000 MILES CAR STARTED SOUNDING LIKE A HELICOPTER,TOOK TO THE DEALERSHIP,THEY DROVE IT,THOUGHT MAYBE A WHEEL BEARING,REPLACED THAT,ROTATED TIRES TOLD ME TO DRIVE FOR AWHILE AND SEE IF THAT CHANGED IT,WENT BACK 3 WEEKS LATER SAYING NEED TO ROTATE TIRES THEN WENT BACK AGAIN AT 17500 MILES WITH SAME ISSUE,SERVICE ADVISOR ASKED ME HARSHLY 'WHERE HAVE YOU BEEN DRIVING THIS THING', I TELL ON THE HIGHWAY TO AND FROM WORK AND DAILY DRIVING,HE TELLS ME YOU KNOW YOU CAN TAKE THIS TO ANY OTHER DEALERSHIP, I SAY NO IT'S CALLED LOYALTY, I SPEAK WITH SERVICE MANAGER,HE DRIVES THE CAR REALIZING IT IS LOUD,HAS TIRES TAKEN OFF ANOTHER IDENTICAL CAR,SOUND GOES AWAY,HE TALKS TO KIA,THEY DECIDE TO GIVE ME NEW TIRES,THEY WERE INSTALLED CAR DRIVE FINE TILL ABOUT ANOTHER 12000 MILES AND NOISE CAME BACK,I WENT TO A DIFFERENT DEALERSHIP FOR A OIL CHANGE 2 TIMES AND THEY NEVER SAID ANYTHING ABOUT TIRES ON THEIR INSPECTION,DECIDED TO GO BACK TO ORIGINAL DEALERSHIP AND THEY TELL ME TIRES ARE FEATHERED AGAIN, I SAY HOW IS THAT POSSIBLE I HAVE NEVER HEARD OF A CAR GOING THROUGH 2 SETS OF TIRES IN 37000 MILES,THEY TELL ME IT'S…”

“The contact owns a 2017 Kia Cadenza. The contact stated that while driving at various speeds, the vehicle suddenly lost motive power. The contact waited before restarting the vehicle and continued driving. The ABS warning light was intermittently flashing. The failure became more persistent, causing the vehicle to lose power steering functionality. The power steering and traction control warning lights were illuminated. The vehicle was taken to the dealer to be diagnosed, and it was determined that the Motor Driven Power Steering (MDPS) and Electronic Control Unit or Engine Control Unit (ECU) had failed. The parts to replace were Part Number: 56340/F60, a genuine OEM Motor Driven Power Steering (MDPS) Control Module. The vehicle was not repaired. The vehicle was not repaired. The contact stated that the vehicle was previously included in Manufacturer Recall Number: WTY039. The manufacturer was made aware of the issue, and a case was opened. The failure mileage was approximately 165,000.”

“The contact owns a 2017 Kia Cadenza. The contact received notification of NHTSA campaign number 21V137000 (Service Brakes, Hydraulic) however, the part to do the recall repair was not yet available. The local dealer was contacted and it was confirmed that the part was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure. Parts distribution disconnect.”