2021 Ford Ranger: check engine light

Filed Nov 17, 2025 · Body, Engine · 114,000 miles · MO

The contact owns a 2021 Ford Ranger. The contact stated that while driving at 70 MPH, there was a misfire coming from the engine, and the vehicle shuddered violently. The contact stated that the failure increased while depressing the accelerator pedal. The check engine warning light was illuminated. The service manager at the dealer was contacted and informed the contact that he had remote access to the DTC that was displayed after the failure had occurred. The contact verbally provided the DTC, but the information was not available. The vehicle was not diagnosed or repaired. The contact stated that upon researching the failure online, information related to water leaking into the engine compartment while the vehicle was parked on an incline with the front end facing down, due to the design of the vehicle. The contact stated that the vehicle was routinely parked on an incline in the driveway with the front of the vehicle facing down. The manufacturer was notified of the failure, but no assistance was provided. The failure mileage was approximately 114,000.

Filed Jun 7, 2025 · Fuel system, Transmission · TX

When I accelerate after a stop my truck starts jerking when shifting thru lower gears and the check engine light flashes. To increase my speed I have to slowly press the gas until it shifts thru gears. After it shifts thru the lower gears it appears to be okay. It doesn't do it at each stop but is now happening more frequently. I don't know if it's a transmission problem or fuel pump. Current mileage is around 62000. If I'm on the highway it will sometimes start jerking while the using cruise control and I have hit the brakes and take over acceleration. I've now parked the truck because dealer cannot get to it for 3-4 weeks.

Filed Mar 17, 2025 · Engine, Fuel system · NY

It started moth my vehicle losing power and chugging , dealership diagnosed as transmission (10 speed ). After all of the Ford appointed tasks to fix said problem, valves were replaced , did not work then entire transmission was replaced . After 7 times in the shop and many missed work hours . Maybe 2 weeks later truck starts bucking as I enter the highway , was close to getting rear ended . Brought vehicle to dealership 2 weeks later diagnosed with the turbo going out in it . And then Friday 3/14 driving home from work the check engine light comes on. Says emission issues ? Also says need to service engine soon . Dealership says it is fine to drive they will call me when they can figure it out ? My vehicle ha less than 25k miles these issues started when I had 17k on it Started 8/5/24

Filed Apr 19, 2024 · Engine · 13,000 miles · FL

The contact owns a 2021 Ford Ranger. The contact stated while driving at approximately 40 MPH, the vehicle was not responding when the accelerator pedal was depressed. Additionally, the vehicle was shaking from left to right. The check engine warning light illuminated, and the contact pulled to the side of the roadway. The vehicle was towed to the dealer where it was diagnosed with a water leak that damaged the spark plugs and spark plug welds. The manufacturer was made aware of the failure. The failure mileage was approximately 13,000.

Filed Apr 17, 2024 · Transmission · PA

Harsh shifting into D, loss of power when accelerating while cold. Sometimes would start across an intersection then buck, loose power and slow down then SLAM back into gear and chirp the rear tires. Technical Service Bulletin 23-2350 was performed on 11/15/2023 which updated the trans tables and cleared some codes. This helped the issue for about a week but then truck was in again on 1/22/2024 for TSB 23-2350 a second time which replaced the CDF drum. A month later, 800 miles, 2/18/2024 truck shifted HARD while in cruise control on the turnpike in traffic and lost power. DTC P0766 check engine light came on and truck would no longer move. Transmission fluid sprayed under truck. Had to be towed to dealership. Clutch Valve D was replaced. Two months have gone by and the hard shifting into D and occasional complete loss of power still occurring. Waiting for the next check engine light to appear to take it in again. I now drive very conservatively because I don't know if it will stop moving half way across an intersection again.

Filed Jan 11, 2023 · Engine · 9,952 miles · NY

The contact owns a 2021 Ford Ranger. The contact stated that while driving at highway speeds, the vehicle hesitated while depressing the accelerator pedal on four separate occasions, with the check engine warning light illuminated. Despite the failure, the contact managed to drive the vehicle to a local dealer where a mechanic discovered a misfire in one of the cylinders; caused by water found in the spark plug well. The dealer managed to drain the water from the spark plug well; however, corrosion was found in the spark plug well. The manufacturer was notified of the failure and the contact was given a case number. The vehicle was repaired. The failure mileage was 9,952.