2016 Honda Pilot Electrical System Problems

Car fails to start and warning flashes, keyless start system problem.

Vehicle caught fire and completely burned up. It had no problems, had been serviced and recently inspected for emissions and safety in Virginia.

warning engine light came on. Emission control system light came on too. Honda Pilot 2016 Milage 70,662. Vehicle operating normally. Had car parts store use OBD electronic scanner and it revealed a code P0328: "Knock Sensor voltage High". Code was deleted after scan. I was told by tech at car parts store that the sensor was detecting odd electronic signals and sent info to the cars computer, which intern made the computer to display the warning lights on the dash panel. Warning lights were then off, and then a day later, the engine warning lights came on again. There are no physical or audible signs that any mechanical errors are happening, The car/engine is operating as normal. next day; made appt with Honda dealership to check system with their equipment and the warning lights did not come on , prior to the trip to the dealership. Dealership scan (Dec 23, 2025) confirms a faulty Knock Sensor w/code P0328. My internet search of this code reading, reveals possible engine damage, improper fuel distribution and possible engine failure when driving. This issue has been reported before, many times, per my internet search...why no recall? Dealership wants $1,234 to replace Knock sensor bank 1& 2. My original request to the dealership was to check my vehicle to see if it had any performance problems as noted in Honda Service Bulletin 20-100 Nov 24, 2020 problems, but their search revealed the P0328 code . I was charged $100 just for this diagnostic system search.

Following all repair/recall/warranty work recommended by Honda, the Auto Stop/Start feature is again failing. This results in the vehicle not restarting after the auto idle engine stop is engaged while in traffic, stop lights, stop signs etc. This is a random occurrence, but results in a significant safety hazard as a stopped vehicle in a lane of travel. This is a recurring issue, no specific date of incident.

My keyless start system is going off and on and this is supposedly a well known problem with this year and model and the start stop buttoning going off and car stalling etc. it says to report to you all online.

When the vehicle idle is on and I break at a red light or stop sign it has NOT started back up. This has happened a few times. Today at a red light it cut it did it and I needed a jump start to get it back working.

Honda issued Service Bulletin 20-117 regarding a Warranty Extension for the 2016–2017 Pilot and 2017 Ridgeline addressing a Keyless Start System Error with DTC B12C5. Following an NHTSA investigation, Honda extended warranty coverage to 9 years or 125,000 miles under this bulletin. My 2016 Honda Pilot currently has 107,000 miles and is only six months past the nine-year time limit. Earlier this year, the Keyless Start System warning indicator began appearing intermittently—illuminating for a few seconds before disappearing for days or weeks. Recently, the warning began to stay on continuously. Per Honda’s initial guidance, I replaced the key fob battery and even swapped fobs with my wife, but the issue persisted. On October 16th, I brought the vehicle to Honda of Chantilly, where technicians diagnosed a faulty start/stop button requiring replacement. I then opened case #15920037 with Honda, but they declined to cover or reimburse the repair, despite it being a known defect covered under the extended warranty for others. I respectfully request that the NHTSA assist in having Honda honor the warranty extension for this documented issue, given the close proximity to the coverage limit and the long-standing nature of the defect.

We started having problems with the catalytic converter clogging so we put Heat in it and then only used 100%gas. Then we went to my daughter’s house and when we went to leave the car wouldn’t start. We could smell burning. We had it towed to our mechanic and he replaced the starter but he had a hard time getting it off because it was almost fused because of the heat. Then 3-4 days later all the check engine lights came on. We had it checked out by Christian Brothers and he had to replace all of the fuel injectors. He also had to replace the ERG valve. It all I feel was caused by the fuel injectors and was causing problems in the engine and causing the burning smell. I have read that this has been a problem on the vehicles and wanted to report it for a Recall. We love the vehicle but with the mileage only being at 143,400.

Engine developed noises while driving and seized up. Prior to engine seizure, auto start/stop was having issues where it would not restart after stopping at a light or stop sign. Rear unibody rusting really badly due to cheap quality metal?

The engine shuts off while driving and the car shifts the transmission to Park or Neutral.

My 2016 Honda pilot has continued to have engine restart issues with the automatic engine stop feature after taking it in for the initial recall. Upon telling this to the dealer, they said the recall work was already done and won’t address it further. They only did the software upgrade and did not tell me about the 2nd stage of repairs available. The issue is random but happens commonly, and seems to be worse on hot days. It also can sometimes struggle to restart after putting it in park after the auto restart fails.

The fuel injection system routinely fails or misfires. Not only does this cause an issue with said system but it also triggers a host of other dashboard alerts. The alerts display all wheel drive problem, emission system problem, power steering problem, hill start problem, vehicle stability assist problem. This is a safety issue because the amount of alerts especially unrelated alerts is obfuscating any actual problems and making it difficult to diagnose the real issue. Investigation shows many other drivers having the same issues with this model only going away when the fuel injection system is replaced. It's also safety issue because if the fuel injection is failing then the car may shut off at a danger to the driver and the public. Given that it is known and chronic it should be a recall

My battery was being drained until dead by a faulty keyless control module. I paid to have the battery replaced after my son and I got stranded 1.5 hours from home. All the lights on the dash went off and nearly every error code displayed as well. Currently at Honda dealership getting the module replaced at a mere $840 after I paid $370 for battery installation when my car "broke down". Now to see I am not the only Honda customer with this issue in this model of vehicle. The car started displaying all the error codes about a week before it began just completely draining the battery that was on 6/23. Battery replaced that day and by Saturday 6/28 was unable to start my car due to battery being completely dead. Had to jump my car and take to dealership on sunday 6/29. So was late to work and have been without my vehicle for over a week while they were trouble shooting the issue.

In my 2016 Honda pilot a lot of buttons are popping up on the screen with no information about how to fix it. My car is having trouble accelerating and is hesitating when needing to accelerate. I was unable to speed up while driving to get to 45 mph Because it would not speed up. All the buttons that are coming up on my car or not correct it’s showing trailer issues and I’ve never once trailed anything with my car. It seems like it’s having extra trouble when the air condition is on as well. I’m unable to figure out what is wrong with my car because all the buttons are not coming up correct when they plug it in for a diagnostic. I have had the alternator replaced and that did not change anything.

Car sound system distort and no sound after 10 minutes of driving. No bluetooth audio, radio, music working. Changing volume, sound setting, factory reset the info system but the problem still exist. Increase the A/C fan speed and driving through pumps seems make the problem start earlier. Sometimes, turn off the car and restart the car after 30 minutes, the sound system is back on, but after the 10-15 minutes the sound went off again. This problem could cause safety issue as I relied on navigation sound while driving. There seems to be the same problem that being recalled in newer model.

Check engine light on emissions system problem and transmission system problem, there is loss power of engine light, after 2 gear transmission feel like it jerks I don't have save to drive my car, i would like to request a recall to be inspected and repair by warranty of Honda because my car is defective by manufacturer Code are: P0420 (rear bank catalyst system efficiency below threshold [bank 1]) P0430 (front bank catalyst system efficiency below threshold [bank 2]) P0300-P0306 (misfire) P219A (air-fuel ratio variation of cylinder [bank 1, rear bank]) P219B (air-fuel ratio variation of cylinder [bank 2, front bank])

The component that failed in both incidents was the vehicle’s wiring system, specifically wiring insulation that appears to be vulnerable to rodent damage. In the first incident, squirrels chewed through wiring connected to the fuel injector system, which triggered a check engine light and was repaired. In the second incident, squirrels again accessed the engine compartment and chewed through wiring affecting the braking system. This resulted in a sudden and unexpected loss of braking function. Yes, the damaged components should be available for inspection through the repair shop or service records, although I would need to confirm the exact location of the retained parts. Safety was significantly put at risk. During the second incident, the vehicle was occupied by multiple passengers, including minors. While approaching a red light, the driver attempted to brake and found that the brakes were not functioning properly. The driver had to shift the vehicle into park and use the emergency brake to stop, narrowly avoiding a serious collision. This created a high-risk, potentially life-threatening situation. The first incident was addressed by a mechanic after the check engine light appeared, confirming damage to the fuel injector-related wiring. The second incident was formally confirmed by a mechanic that the brake line was leaking from damage from, what they highly suspected and have seen in the past, a rodent . In the first incident, a check engine light appeared, prompting immediate attention. In the second incident, there were no warning lights, messages, or prior symptoms before the brake failure occurred.

The contact owns a 2016 Honda Pilot. The contact stated while driving approximately 40 MPH, the Lane Departure, Adaptive Cruise Control, and two additional warning lights were illuminated. The contact stated that the Blind Spot System and Cross-Traffic warning lights illuminated. The contact stated that the START/STOP button failed to start the vehicle. The vehicle was taken to the dealer who diagnosed the vehicle and determined that the multi-purpose camera and all safety system features, and the START/STOP system had failed. The vehicle was not repaired. The manufacturer was made aware of the failure. The manufacturer confirmed that the repair was not covered under recall or warranty. The failure mileage was approximately 60,000.

Auto Start/Stop not working at stop. Vehicle fails to restart when engine has turned off at intersection. On occasion, vehicle fails to start and loses total power. Often, it takes several minutes to regain power. This has occurred in intersections, almost causing accidents. The car was repaired per a TSB, but the issue continues, and has for the last 4 years since purchase.

ECM Failure with fuel rail/system pressure code. Safety issue due to no prior issue and all of a sudden engine stalling in the middle of a busy intersection and taking 10 mins to get started and shift gears to get out of the way of oncoming traffic with all dashboard lights illuminated to include check engine light, trailer stability assist problem light, hill assist problem light, LKAS light, and ACC light.