Other Fuel System Related Problems of the 2023 Mitsubishi Outlander

Table 1 shows one common other fuel system related problems of the 2023 Mitsubishi Outlander.

Table 1. Other Fuel System related problems of Mitsubishi Outlander

Problem Category Number of Problems
Other Fuel System problems
6

Other Fuel System problem #1

The electrical system in my 2023 Mitsubishi Outlander has repeatedly malfunctioned since September 2023. The primary failure involves the dashboard completely shutting down while the vehicle is in motion, resulting in the loss of critical driving information such as speed and system warnings. The issue is intermittent but ongoing and may be available for inspection upon request. This failure creates a serious safety risk because I am unable to see essential driving information while operating the vehicle, placing both myself and my family at risk. The vehicle has been taken to authorized Mitsubishi dealerships multiple times for these issues. Repairs have been performed during these visits; however, none have permanently resolved the problem. The issue temporarily stops after repairs but eventually returns and continues to recur. The problem has been reproduced multiple times. The vehicle has been inspected by authorized Mitsubishi service departments on multiple occasions, but the underlying issue has not been properly diagnosed or permanently repaired. Prior to failure, there have been repeated battery-related issues and sensor malfunctions. The vehicle has required at least three battery replacements since purchase. These symptoms often occur before the dashboard shuts down. In addition to the electrical issue, the vehicle has also experienced fuel pump concerns, which have persisted despite repair attempts. This ongoing and recurring defect makes the vehicle unsafe to operate and remains unresolved.

Other Fuel System problem #2

The ev portion of the phev is often not providing power to the motors, even though, there are still plenty of battery power available. The vehicle sometimes gave "power reduced" warning that usually went away after 30 minutes, and the vehicle cannot go into ev mode. When in ev mode and just cruising on the highway, it barely has power to keep up with traffic and sometimes it is losing speed just on a slight incline on the road causing me to move over or take it out of ev mode just to get power from the gas engine. In one occasion, I driving in ev mode and merging onto the highway. I stepped on the gas and the car was barely, if at all, accelerating. Fortunately, there wasn't vehicle coming from the highway.

Other Fuel System problem #3

1) 12/20/2024: took the car to a Mitsubishi dealer as the 'check engine light' was on for a few days. They erased the code but could not diagnose the cause. Returned home and could not charge the car using the same standard outlet (level 1) I used since I bought the car. The instrument cluster displayed the following (please see pic 1): a) error message 'phev system fault, service required'. B) check engine light. C) forward collision mitigation system [fcm] off warning light. D) rear automatic emergency braking [rear aeb] system off warning light. E) plug-in hybrid ev system warning light. Since 12/20/2024, I have been driving the car with these serious safety issues. 2) 1/2/2025: 'on-board charger' was replaced by the dealer. But the same error continued. Per dealer invoice, they "performed drive cycle pattern 3 and the code returned". Obviously under certain conditions, the erased code returned. 3) since mid-November, 2024, I have been noticing two different ev range mileage. Please see pic 2. My phone app showed (on 1/26/2025) a 51 mile ev range whereas the instrument cluster showed only a 39 mile range. All the errors still remain as of 1/26/2025. 4) opened a case with Mitsubishi but they are refusing to respond with updates. With so many safety issues due to 'phev system fault', I am afraid of taking the car out.

Other Fuel System problem #4

I took this car 2 times to the dealership about the same issue the steering wheel it has a lose parts inside keep giving a weird noise and the second issue the gas smell inside the cabin if you stop the vehicle on hot day and the ac running they are a very bad gas smell coming inside the cabin throw the ac vents I looked on this issue online alot of people have this issue dealership said can't smell nothing they don't want to put the work in to this issue I need help please even last night we smelled it its very bad alot they said on line other people that the gas tank vents on hot day the vent out the gas and its get in to the ac thats why we smell it but when you are driving you dont smell nothing but if you stop and keep the car running come back it will be inside the cabin full of gas smell coming from the vents I have a disabled son I can't keep going throw this issue and some people said that Mitsubishi know about it and they are working on it to fix I can't breath no more gas.

Other Fuel System problem #5

Warning reduced power engine sign came on out of no where. This is the second time this shows up on my dash. . Plugged computer to it and shows code p0404 egr valve stuck. . Mileage at only 10,000.

Other Fuel System problem #6

We (driver and passenger) were pulling into a parking lot and going very slowly about to stop and get out of car. Suddenly and unexpectedly the car accelerated out of control and at an abnormal speed. The air bags deployed, smoke filled the cabin. After the police arrived and the car was towed, liberty mutual insurance company took title to the car. We were lucky to survive because the car ran into a cement wall from the sudden acceleration and went up into the trees and then backed down and hit the ground. There was a police report and the car was inspected by a manufacturer's representative. Earlier in the day there was a warning on the dashboard that said the vehicle needed maintenance. The "black box" of the car was analyzed by bosche CO. But, we would like an independent agency to review the black box of the car and get an explanation as to why this possibly happened to us. The car has many safety features but nothing aided us in this particular instance.


Other Fuel System related problems in other Mitsubishi Outlander model year vehicles:



Outlander Service Bulletins
Outlander Safety Recalls
Outlander Defect Investigations