2012 HONDA CIVIC — Problems, Recalls & Safety Data

The contact owns a 2012 Honda Civic. The contact stated that while driving at various speeds, the vehicle hesitated or stalled while depressing the accelerator pedal. The “Check Emission Systems" message was displayed on the instrument panel. The contact then received notification from the Manufacturer for Honda Service Bulletin: 19-106. The vehicle was taken to the dealer, where a PCM update was performed. Recently, the contact stated that the "Check Emission Systems" message returned, and the vehicle hesitated while depressing the accelerator pedal. The dealer was notified of the failure and provided the cost for a diagnostic test. The manufacturer was notified of the failure, and the contact was provided with a case number. The contact was also informed that dealers were independently owned and could not be forced to repair the vehicle under the service bulletin. The vehicle was not repaired. The failure mileage was approximately 211,000.

Component or system failure: The vehicle experienced failures involving the engine/ignition system, emissions system, Vehicle Stability Assist (VSA), and power steering. On July 14, 2025, warning messages appeared for “Check Emissions System,” “Check VSA System,” and “Check Power Steering System.” Diagnostics identified engine misfire code P0304 (Cylinder #4). On August 11, 2025, an authorized Honda dealership confirmed a seized spark plug and cylinder head damage, indicating an internal engine defect. The vehicle is currently with the selling dealership and available for inspection. Safety risk: Simultaneous failure warnings for emissions, VSA, and power steering created an unsafe driving condition. Impaired stability control and power steering increase the risk of loss of vehicle control during turning or emergency maneuvers. Confirmation of problem: Yes. Independent diagnostics confirmed the misfire. The selling dealer attempted repairs between July 22–25, 2025, but the same warnings returned. On August 8, 2025, the dealer admitted it lacked tools and software to diagnose or repair CNG vehicles. Honda later confirmed internal engine damage. Inspections: The vehicle was inspected by the selling dealer and an authorized Honda dealership. A third-party warranty administrator authorized a tear-down inspection. The vehicle has not yet been inspected by Honda Motor Co. or NHTSA. Prior warnings and recall concern: Warnings first appeared on July 14, 2025, about two weeks after purchase, and recurred despite repairs. The 2012 Honda Civic CNG has multiple recalls involving engine, fuel, and emissions systems, and these failures are consistent with known defect patterns, warranting further investigation.

Component or system failure: The vehicle experienced failures involving the engine/ignition system, emissions system, Vehicle Stability Assist (VSA), and power steering. On July 14, 2025, warning messages appeared for “Check Emissions System,” “Check VSA System,” and “Check Power Steering System.” Diagnostics identified engine misfire code P0304 (Cylinder #4). On August 11, 2025, an authorized Honda dealership confirmed a seized spark plug and cylinder head damage, indicating an internal engine defect. The vehicle is currently with the selling dealership and available for inspection. Safety risk: Simultaneous failure warnings for emissions, VSA, and power steering created an unsafe driving condition. Impaired stability control and power steering increase the risk of loss of vehicle control during turning or emergency maneuvers. Confirmation of problem: Yes. Independent diagnostics confirmed the misfire. The selling dealer attempted repairs between July 22–25, 2025, but the same warnings returned. On August 8, 2025, the dealer admitted it lacked tools and software to diagnose or repair CNG vehicles. Honda later confirmed internal engine damage. Inspections: The vehicle was inspected by the selling dealer and an authorized Honda dealership. A third-party warranty administrator authorized a tear-down inspection. The vehicle has not yet been inspected by Honda Motor Co. or NHTSA. Prior warnings and recall concern: Warnings first appeared on July 14, 2025, about two weeks after purchase, and recurred despite repairs. The 2012 Honda Civic CNG has multiple recalls involving engine, fuel, and emissions systems, and these failures are consistent with known defect patterns, warranting further investigation.

Component or system failure: The vehicle experienced failures involving the engine/ignition system, emissions system, Vehicle Stability Assist (VSA), and power steering. On July 14, 2025, warning messages appeared for “Check Emissions System,” “Check VSA System,” and “Check Power Steering System.” Diagnostics identified engine misfire code P0304 (Cylinder #4). On August 11, 2025, an authorized Honda dealership confirmed a seized spark plug and cylinder head damage, indicating an internal engine defect. The vehicle is currently with the selling dealership and available for inspection. Safety risk: Simultaneous failure warnings for emissions, VSA, and power steering created an unsafe driving condition. Impaired stability control and power steering increase the risk of loss of vehicle control during turning or emergency maneuvers. Confirmation of problem: Yes. Independent diagnostics confirmed the misfire. The selling dealer attempted repairs between July 22–25, 2025, but the same warnings returned. On August 8, 2025, the dealer admitted it lacked tools and software to diagnose or repair CNG vehicles. Honda later confirmed internal engine damage. Inspections: The vehicle was inspected by the selling dealer and an authorized Honda dealership. A third-party warranty administrator authorized a tear-down inspection. The vehicle has not yet been inspected by Honda Motor Co. or NHTSA. Prior warnings and recall concern: Warnings first appeared on July 14, 2025, about two weeks after purchase, and recurred despite repairs. The 2012 Honda Civic CNG has multiple recalls involving engine, fuel, and emissions systems, and these failures are consistent with known defect patterns, warranting further investigation.

The contact owns a 2012 Honda Civic. The contact stated that while driving at an undisclosed speed, there was an abnormally strong fuel odor detected. The contact pulled over and parked the vehicle, and became aware that there was fuel leaking onto the ground. The vehicle was taken to an independent mechanic, who determined that the fuel line needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 171,026.