2021 Jeep Grand Cherokee L: check engine light

Filed Feb 25, 2026 · Engine · ID

I was driving my vehicle home after a nearby out of town errand. I was on US-95 between Potlatch ID and Moscow ID which is a very hilly, curvy 2-lane 60mph highway with little to no cell service. As I ascended my first big hill, my engine light came on flashing and the ride became noticeably bumpy. I could not call anyone for many miles yet, so I put on my safety hazards and continued driving, hoping to make it to town. With each hill my car became more unstable and seemed to be struggling to accelerate. Once I had cell service just outside of Moscow I called my husband to tell him what was happening, where I was at and proceeded to head to an auto repair shop. Once I drove into Moscow, my car was incredibly shaky and noisy and the engine seemed to struggle to stay engaged at stop lights. I brought it to Hive auto repair and they told me that my engine was misfiring, but that they would run a level 1 diagnostic that day. When they called with the results, they confirmed the following information: Scanned for DTCs and found P0301 - Cylinder 1 Misfire Detected. On this 3.6L engine, Cylinder 1 is located beneath the intake manifold, requiring intake removal for further access and testing.-- I continued to level 2 inspection and removal of the manifold which showed significant problems within the engine at Cylinder Head 1. There was oil intrusion and low compression, consistent with warping of the head. They said that this was a known issue with this engine on Stellantis vehicles because of an EGR valve on cylinder 1 2018/2022. Even though I had my Jeep regularly serviced at McGee Jeep in Barre VT, they never tested for this because it wasn't recommended or in the scheduled maintenance. But when I spoke with them they confirmed this is a known issue. I understand it is a severe, dangerous and expensive repair, but usually occurs after the warranty expires. I now have an unsafe, undriveable vehicle with a $14k repair pending.

Filed Dec 15, 2025 · Steering · MI

Started the vehicle and while pulling down the driveway the power steering suddenly went completely out. Warning lights began flashing and I was unable to steer vehicle. Stopped vehicle and turned off several times, however unable to overcome power steering loss, or reset warning lights. No other issues, considering the vehicle was just recently serviced for same complaint four weeks earlier and batteries replaced stemming from another recent issues with DTCS issues. Considering I was in a rural wooded area, I was forced to drive the vehicle home without power steering. I parked the vehicle waiting for appointment from dealer, and upon starting the vehicle, power steering returned, however a check engine fault light remained. The dealer found "many DTCS communication loss codes again", but stated nothing further they could do with the these factory defects at just 26,000 miles. I have all all documentation on these ongoing safety issues, with no help from Stellates.

Filed Sep 2, 2025 · Lights · IL

I have had recalls on my vehicle since I purchased it and have taken it back to dealer and they state they are unable to fix them. I still have no brights still have a check engine light for the code on transfer case clutch and there is one that my tire could fall off. I drive 60 miles a day and have 3 small children this is very unsafe and they refuse to do anything about it

Filed Aug 4, 2025 · Transmission · WA

The vehicle has twice gotten stuck in third gear. While driving, as it's shifting from third to fourth, will get stuck in third and clunk, and then rev. The engine light will come on, and it forces you to pull over. The manual shifters do not work either. You have to pull over, shut the car down, and restart. The engine light comes on but no errors are logged, and the engine light clears itself a few restarts later. The first time this happened to me, I was driving with my son and it startled us that the car didn't seem to go but revved high. The most recent time, July 18,2025 I took pictures. My whole family was in the car, and we were driving through a campground with people walking around. I didn't have time to make a decision to pull over. There wasn't anywhere safe to park, so we had to coast bit to find a spot.

Filed Jul 20, 2025 · Engine · MI

Was accelerating to pass another vehicle and all of the sudden the the check engine light came on and the engine started shaking as if it were shutting down. I was able to slow down and pull over on the side of the road. Now I am unable to accelerate over about 30 mph without this occurring.

Filed May 13, 2025 · Engine · OH

Presented as camshaft position sensor with loss of power, poor acceleration and general misfires. After many weeks of diagnostic and repairs, turns out to be a problem with the camshaft intake. Specifically the entire cam kit. Appeared 1 week after purchase as a check engine light. This problem had been confirmed by the chrysler dealership where I bought the car and sent it for diagnostic. Problem with the cam could result in sudden loss of power while driving/and or limp mode. Damage to transmission and other parts such as timing chain. I do not have any invoices, however this vehicle was in for service at greenwood auto in cortland ohio for a week before being transferred to Mig chryler in bellafontaine ohio where it was bought for service. Currently no invoice for the repair because the parts are not available due to high amount of demand for this specific problem. My jeep has now been in the shop for 4 weeks with no timeframe for parts.

Filed Feb 1, 2025 · Driver assistance, Engine · WI

December 2021 about 2 months after purchasing, traction control, power steering light would intermittently turn on as well as the radio screen would flash black. All of these were separate problems and were not ways necessarily present when another light was on but they did occasionally all happen at the same time. Periodically, not every time when the light came there was the inability to turn the wheel. The length of time the light of inability to turn the wheel would vary sometimes the light would go away after turning the vehicle off and turning it back on while other times it was days. By the time a shop is able to get it in to be looked at the lights were off and not able to be recreated. It was at the dealership for a while and was told I could bring it home. I had concerns the and voiced them that although the light isn’t on now, what if it does turn on and I can’t turn the steering wheel while driving? It couldn’t be fixed if they didn’t know what was causing it. Eventually an ‘update’ was done and supposed to have fixed the problem. The radio still flashes a black screen periodically, the lights didn’t come on as frequent and the inability to turn the wheel went away. Until recently December 2024 intermittent lights that come on but do not stay on, check engine light, electric power steering, front collision (off) and traction control. These lights have come on intermittently but do not stay on. I have had times where I was unable to turn the wheel, luckily not on the road, the vehicle has lost traction while driving in the snow over the winter and has occasionally felt like the vehicle was ‘chugging’ down the road. Now the symptoms are not present every time a light turns on sometimes it runs fine. The length of time the lights stay on vary and again by the time I can get an appt the lights are off and the lights do not always come on at the same time as another. So the issue occurring with hardly any miles and no again with about 50k mils.