WenmarOpen by Wenmar Pro

Service bulletins for the 2018 Honda Civic

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

236 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

Bulletins, newest first
ABOM080920192019-08-13. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. Dealer Message - Today, August 9, 2019, American Honda is announcing a warranty extension for certain 2016-18 Civic vehicles. This warranty extension covers the A/C condenser to address concerns of leaking refrigerant. American Honda is extending the warranty on the A/C condenser from the original 3 years to 10 years from the original date of purchase.
A19-091_version22019-08-13. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. Service Bulletin - American Honda is extending the warranty on the A/C condenser to 10 years from the original date of purchase with unlimited miles. This warranty only covers vehicles that have a defective A/C condenser from the factory. The A/C condenser was not manufactured to specification. As a result, tiny holes may develop in the condenser tube walls that allows the refrigerant to leak out. The warranty extension does not apply to any vehicle that has a leaking condenser due to foreign object damage. The warranty extension does not apply to any vehicle that has ever been declared a total loss or sold for salvage by a financial institution or insurer, or has a branded or similar title under any state's law.
A19-0912019-08-13. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. Service Bulletin - American Honda is extending the warranty on the A/C condenser to 10 years from the original date of purchase with unlimited miles. This warranty only covers vehicles that have a defective A/C condenser from the factory. The A/C condenser was not manufactured to specification. As a result, tiny holes may develop in the condenser tube walls that allows the refrigerant to leak out. The warranty extension does not apply to any vehicle that has a leaking condenser due to foreign object damage. The warranty extension does not apply to any vehicle that has ever been declared a total loss or sold for salvage by a financial institution or insurer, or has a branded or similar title under any state's law.
APaS073020199012019-08-02. Service bulletin. ENGINE AND ENGINE COOLING. Dealer Message - American Honda Motor Co., Inc. (AHM) is investigating certain 2018-2019 Civic 2.0Ls with a customer complaint of an oil leak. To better understand the cause of this condition, AHM would like to collect specific parts from the vehicle prior to you attempting a repair of any kind.
A19-0472019-07-26. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN. Service Bulletin - The shift position indicator ("D" light) starts flashing due to DTC P2817, (Shift solenoid valve O/P [pressure control solenoid H] stuck off) being set. When the TCM checks the drive pulley oil pressure, it misreads the pressure as high even though oil pressure is within specification.
ONLE4C070820192019-07-23. Service bulletin. ENGINE AND ENGINE COOLING. Owner Notification Letter - Some 2016-18 Civic vehicles equipped with the 1.5 liter turbocharged engine may experience driveability issues. This may result in Diagnostic Trouble Codes (DTCs) P0300 (random misfire detected), P0301 (No. 1 cylinder misfire detected), P0302 (No. 2 cylinder misfire detected), P0303 (No. 3 cylinder misfire detected), P0304 (No. 4 cylinder misfire detected), or P0172 (fuel system too rich) or a whirling noise coming from the engine compartment. These concerns may result in the Malfunction Indicator Lamp (MIL) turning on.
ONLD4D07082019_22019-07-23. Service bulletin. ENGINE AND ENGINE COOLING. Owner Notification Letter - Some 2016-18 Civic vehicles equipped with the 1.5 liter turbocharged engine may experience driveability issues. This may result in Diagnostic Trouble Codes (DTCs) P0300 (random misfire detected), P0301 (No. 1 cylinder misfire detected), P0302 (No. 2 cylinder misfire detected), P0303 (No. 3 cylinder misfire detected), P0304 (No. 4 cylinder misfire detected), or P0172 (fuel system too rich) or a whirling noise coming from the engine compartment. These concerns may result in the Malfunction Indicator Lamp (MIL) turning on.
ONLD4D07082019_12019-07-23. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER; ENGINE AND ENGINE COOLING. Owner Notification Letter - Some 2016-18 Civic vehicles equipped with the 1.5 liter turbocharged engine may experience driveability issues. This may result in Diagnostic Trouble Codes (DTCs) P0300 (random misfire detected), P0301 (No. 1 cylinder misfire detected), P0302 (No. 2 cylinder misfire detected), P0303 (No. 3 cylinder misfire detected), P0304 (No. 4 cylinder misfire detected), or P0172 (fuel system too rich) or a whirling noise coming from the engine compartment. These concerns may result in the Malfunction Indicator Lamp (MIL) turning on.
APaS070820199012019-07-22. Service bulletin. ENGINE AND ENGINE COOLING. Dealer Message - American Honda Motor Co., Inc. (AHM) is investigating certain 2018-2019 Civic 2.0Ls with a customer complaint of an oil leak. To better understand the cause of this condition, AHM would like to collect specific parts from the vehicle prior to you attempting a repair of any kind.
APP070320192019-07-11. Service bulletin. ELECTRICAL SYSTEM. Dealer Message - The July episode of Tech2Tech is now posted. We've got some valuable information for you, so check it out! This month we're featuring "Important Advice When Unplugging Electrical Connectors."
APP070220192019-07-11. Service bulletin. ELECTRICAL SYSTEM. Dealer Message - The July episode of Tech2Tech is now posted. We've got some valuable information for you, so check it out! This month we're featuring "Important Advice When Unplugging Electrical Connectors."
AAMV1907012019-07-11. Service bulletin. ELECTRICAL SYSTEM. Video Message - It concerns the shift indicators and switch backlighting not working on 2016-2019 Civics. Please let us know if you would like a copy of the video sent to you on a DVD or thumb drive.
AAMV1907022019-07-08. Service bulletin. ELECTRICAL SYSTEM. Video Message - It concerns the shift indicators and switch backlighting not working on 2016-2019 Civics. Please let us know if you would like a copy of the video sent to you on a DVD or thumb drive.
APaS061920192019-06-25. Service bulletin. ENGINE AND ENGINE COOLING. Dealer Message - American Honda Motor Co., Inc. (AHM) is investigating certain 2018-2019 Civic 2.0Ls with a customer complaint of an oil leak. To better understand the cause of this condition, AHM would like to collect specific parts from the vehicle prior to you attempting a repair of any kind.
A19-0382019-06-25. Service bulletin. ENGINE AND ENGINE COOLING. Service Bulletin - Under certain circumstances, the vehicle may experience driveability issues, which may result in DTCs P0300 (random misfire detected), P0301 (No. 1 cylinder misfire detected), P0302 (No. 2 cylinder misfire detected), P0303 (No. 3 cylinder misfire detected), P0304 (No. 4 cylinder misfire detected), or P0172 (fuel system too rich) or a whirling noise coming from the engine compartment.
A19-0332019-06-25. Service bulletin. ENGINE AND ENGINE COOLING. Service Bulletin - Under certain circumstances, the vehicle may experience driveability issues, which may result in DTCs P0300 (random misfire detected), P0301 (No. 1 cylinder misfire detected), P0302 (No. 2 cylinder misfire detected), P0303 (No. 3 cylinder misfire detected), P0304 (No. 4 cylinder misfire detected), or P0172 (fuel system too rich) or a whirling noise coming from the engine compartment.
A16040B2019-06-06. Service bulletin. EQUIPMENT:ELECTRICAL; EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM); ELECTRICAL SYSTEM; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. Service Bulletin - The 12-pin connector cavity in the back of the audio unit/audio-navigation unit is intentionally empty. It's used as a service port for other markets, so never try plugging into it.
APaS052420199012019-05-31. Service bulletin. ENGINE AND ENGINE COOLING. Dealer Message - American Honda Motor Co., Inc. (AHM) is investigating certain 2018-2019 Civic 2.0Ls with a customer complaint of an oil leak. To better understand the cause of this condition, AHM would like to collect specific parts from the vehicle prior to you attempting a repair of any kind.
APaS050720199012019-05-15. Service bulletin. ENGINE AND ENGINE COOLING. Dealer Message - American Honda Motor Co., Inc. (AHM) is investigating certain 2018-2019 Civic 2.0Ls with a customer complaint of an oil leak. To better understand the cause of this condition, AHM would like to collect specific parts from the vehicle prior to you attempting a repair of any kind.
ONL6DV050220192019-05-08. Service bulletin. ENGINE AND ENGINE COOLING. Owner Notification Letter - On 2016-18 Civic vehicles equipped with the 1.5 liter turbocharged engine, there are reports of vehicles experiencing driveability concerns. These concerns can result in the malfunction indicator lamp (MIL) turning on.
A19-0472019-05-04. Service bulletin. POWER TRAIN. Service Bulletin - The shift position indicator ("D" light) starts flashing due to DTC P2817, (Shift solenoid valve O/P [pressure control solenoid H] stuck off) being set. When the TCM checks the drive pulley oil pressure, it misreads the pressure as high even though oil pressure is within specification.
APaS041820199032019-04-23. Service bulletin. ENGINE AND ENGINE COOLING. Dealer Message - American Honda Motor Co., Inc. (AHM) is investigating certain 2018-2019 Civic 2.0Ls with a customer complaint of an oil leak. To better understand the cause of this condition, AHM would like to collect specific parts from the vehicle prior to you attempting a repair of any kind.
APaS040220199042019-04-21. Service bulletin. ENGINE. Dealer Message - American Honda Motor Co., Inc. (AHM) is investigating certain 2018-2019 Civic 2.0Ls with a customer complaint of an oil leak. To better understand the cause of this condition, AHM would like to collect specific parts from the vehicle prior to you attempting a repair of any kind.
ABOM040520192019-04-21. Service bulletin. POWER TRAIN; ENGINE. Dealer Message - Today, April 5, 2019, American Honda is announcing a warranty extension for certain 2016-18 Civic and 2017-18 CR-V vehicles due to drivability concerns. American Honda is extending the powertrain warranty on the camshafts and rocker arm assemblies from the original 5 years/60,000 miles to 6 years/unlimited miles from the original date of sale.
A19-0382019-04-21. Service bulletin. ENGINE. Service Bulletin - Under certain circumstances, the vehicle may experience driveability issues, which may result in DTCs P0300 (random misfire detected), P0301 (No. 1 cylinder misfire detected), P0302 (No. 2 cylinder misfire detected), P0303 (No. 3 cylinder misfire detected), P0304 (No. 4 cylinder misfire detected), or P0172 (fuel system too rich) or a whirling noise coming from the engine compartment.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.