2022 Kia Carnival: stuck in gear or won't shift

Filed Nov 3, 2026 · Electrical · CA

The factory installed Kia 12v battery specification (AGM80L - 80Ah, CCA 800A, RC 155min) was not adequate for the SX Prestige trim-level required (powered liftgate). This created voltage dips over time which required replacement of power liftgate system, blown fuses for infotainment system, numerous “limp mode” occasions. Required 12v battery spec’s per Kia website: 90Ah, CCA 850A. We brought this up with dealership service department and Kia customer care multiple times and were laughed at.

Filed Apr 6, 2026 · Engine, Fuel system · IA

Engine light turns on every couple months. The Kia either stops accelerating and goes into “limp mode” or gives code for misfiring cylinders. Took to dealership several times, they did nothing but reset battery so light goes off. Unsafe when driving my family around and has turned into an unreliable vehicle. SO frustrating for a new vehicle to have these issues.

Filed Aug 12, 2025 · Acceleration, Transmission · PA

When traveling on the highway, the vehicle would not shift into a higher gear limiting the control of the vehicle to accelerate to the flow of traffic. The transmission would not shift for approximately 1/4 of a mile and was stuck at a max speed of ~35 mph and it would not accelerate. This loss of control almost caused an accident and put my family and self at extreme risk. Eventually the vehicle did finally shift gears allowing us to accelerate with the flow of traffic (60mph) This issue with a delay in shifting gears has intermittently happened on prior occasion when accelerating from a full stop, however, this was the first time it happened at an accelerated speed. The vehicle is not safe to operate and was towed to a service center; however, the issue is intermittent and not easily reproducible -- making it even more dangerous as you do not know when it will happen next.

Filed Oct 13, 2024 · Transmission · AZ

We have been having an acceleration issue for over a year now. The vehicle will be running fine and the randomly not go over 30 MPH. You could have your foot the floor and the vehicle will not shift or go above 3 rpm’s. This has caused us to be in many dangerous scenarios getting onto an interstate. This has almost caused us to be rear ended multiple times. Problem has be reproduced at the dealer and “repaired” though the problem continues to happen. Sometimes the engine warning light is on when it happens, others times it is not and happens with zero warning.

Filed Jan 22, 2022 · Acceleration, Electrical · IL

The throttle body froze up and the Van went into "limp mode". I was driving on a semi-busy road and I could not go above 10mph. It would not let me shift either. Like it was not getting any gas to let me accelerate. The check engine light was on, I used a scan reader and the code came as P2118. Also when it went to the dealership the check engine light was still on. It was inspected by the dealership, but only deleted it and it was given back to us. Yes, the first symptom was the idle was rough and the exhaust was making a deep noise. *Dealership wrote that it had high rpms*, which I never said that to them, I told them( dealership) that it was low rpms with the rough idle. I had it idle for 5 minutes so it could warm up since it was 15 degrees that night. This issue is not safe because I could get hit from behind because the van can not go faster or drive at the marked speed limit on city/highway roads. Also, having issues like this is not safe for my kids or other passengers in the Carnival. The dealership said it is from condensation getting into the throttle body. But I have never had this issue with any other car/truck I have owned.