2023 Honda Accord Hybrid Technical Service Bulletins

48 technical service bulletins (TSBs) are on record for the 2023 Honda Accord Hybrid. TSBs are notes manufacturers send to dealers about repair procedures for issues seen in the field. They are not recalls and do not by themselves mean a vehicle has a fault.

• 11037691Sep 25, 2026Engine. Service Bulletin - Under certain conditions, the cylinder head gasket effectiveness may be reduced which may cause vehicles to experience overheating, coolant loss, and/or misfire. In some cases, DTCs P0300 through P0304 may also be stored (DTCs are not required for repair).
• 11036424Aug 26, 2026Engine. Dealer Message - Under certain conditions, the cylinder head gasket effectiveness may be reduced which may cause vehicles to experience overheating, coolant loss, misfire, and/or DTCs P0300 through P0304 stored.
• 11036406Aug 26, 2026Engine. Service Bulletin - Under certain conditions, the cylinder head gasket effectiveness may be reduced which may cause vehicles to experience overheating, coolant loss, misfire and/or DTCs P0300 thru P0304 stored.
• 11036112Aug 8, 2026Fuel system. Service Bulletin - To better manage engine temperatures, a PGM-FI update has been developed to optimize electric water pump operation.
• 11035782Jul 24, 2026Fuel system, Engine. Service Bulletin - To better manage engine temperatures, a PGM-FI update has been developed to optimize electric water pump operation.
• 11035778Jul 24, 2026Engine, Fuel system. Dealer Message - To help improve engine temperatures, a software update has been developed for the electric water pump to optimize its operation.
• 11034202Jun 23, 2026Engine. Service Bulletin - A slight engine vibration and the Malfunction Indicator Lamp (MIL) is ON with DTC P0700 (Transmission Control System MIL Request) set during start-up in below freezing temperatures.
• 11031760Apr 22, 2026Body and structure. Service Bulletin - There is a dull creaking, rubbing, popping, or clicking noise coming from the front of the vehicle while turning at low speeds potentially due to the bump stop contacting the top of the front damper body.
• 11031756Apr 21, 2026Transmission and drivetrain. Service Bulletin - The current Power Control Unit (PCU) Radiator Guard does not provide adequate protection. Roadway debris can cause damage to the PCU Radiator which may result in multiple warning lights, Malfunction Indicator Lights (MIL), and decreased hybrid system performance.
• 11031499Apr 21, 2026Engine. Service Bulletin - The current Power Control Unit (PCU) Radiator Guard does not provide adequate protection. Roadway debris can cause damage to the PCU Radiator which may result in multiple warning lights, Malfunction Indicator Lights (MIL), and decreased hybrid system performance.
• 11031289Apr 7, 2026Electrical system. Tech Line Summary - The vehicle's infotainment system displays previously viewed SMS messages upon each ignition cycle, when the customer's Android phone is connected via Bluetooth.
• 11031283Apr 4, 2026Transmission and drivetrain. Service Bulletin - The current Power Control Unit (PCU) Radiator Guard does not provide adequate protection. Roadway debris can cause damage to the PCU Radiator which may result in multiple Malfunction Indicator Lights (MIL) and decreased hybrid system performance.
• 11031279Apr 4, 2026Transmission and drivetrain. Dealer Message - The current radiator guard does not provide adequate protection. Roadway debris can cause damage to the Power Control Unit (PCU) radiator which may lead to coolant leakage, illumination of multiple Malfunction Indicator Lights (MIL), and/or loss of driving force.
• 11030077Mar 3, 2026Engine. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2023-2025 FHEV Accords & CR-Vs with a customer complaint of an oil leak or a dealer noticing an oil leak from the cylinder head cover gasket during routine maintenance. To better understand the cause of this condition, AHM would like to collect certain parts from the vehicle prior to you attempting a repair of any kind.
• 11024249Oct 2, 2025Engine. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2023-2024 FHEV Accords & CR-Vs with a customer complaint of an oil leak or a dealer noticing an oil leak from the head cover gasket during routine maintenance. To better understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind.
• 11021951Aug 4, 2025Electrical system. Tech Line - Customers may experience error code S001 with their audio unit. The vehicle may also have DTC B2B05-92 CAN Gateway error stored due to the dealership’s wi-fi settings.
• 11020826Jul 8, 2025Engine. Service Bulletin - The engine runs rough and makes a rattling noise, accompanied by DTC P0134 or P0135 due to a possible fuel injector leak causing a rich air/fuel (A/F) mixture that fouls the spark plug(s) and causing the PCM to misread the A/F sensor heater resistance. Other DTCs may also include: P0700, P0300, P219C, P219D, P219E, P219F, P0172.
• 11019245May 22, 2025Electrical system. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching certain 2023-2025 Accord FHEV’s with a customer complaint of multiple warning lights on for lost communication DTCs. In some cases, the customer may also experience their vehicle losing power. To better understand the cause of this condition, AHM would like to collect information from the vehicle.
• 11014395Feb 14, 2025Engine. Service Bulletin - The Malfunction Indicator Lamp (MIL) is displayed and DTC P26CC (Electric Engine Coolant Pump Circuit Low Voltage) is stored when starting the vehicle in freezing temperatures.
• 11013755Jan 30, 2025Suspension. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2023-24 Accords FHEVs with a customer complaint of front damper noise. The original dampers may also be leaking. To better understand the cause of this condition, AHM would like to collect parts from the vehicle prior to you attempting a repair of any kind.
• 11013767Jan 27, 2025Engine. Service Bulletin - A slight engine vibration and the Malfunction Indicator Lamp (MIL) is ON with DTC P0700 (Transmission Control System MIL Request) set during start-up in below freezing temperatures.
• 11013118Jan 17, 2025Suspension. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2023-24 Accords FHEVs with a customer complaint of front damper noise. The original dampers may also be leaking. To better understand the cause of this condition, AHM would like to collect parts from the vehicle prior to you attempting a repair of any kind.
• 11013106Jan 3, 2025Suspension. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2023-24 Accords FHEVs with a customer complaint of front damper noise. The original dampers may also be leaking. To better understand the cause of this condition, AHM would like to collect parts from the vehicle prior to you attempting a repair of any kind.
• 11011791Dec 3, 2024Suspension. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2023-24 Accords FHEVs with a customer complaint of front damper noise. The original dampers may also be leaking. To better understand the cause of this condition, AHM would like to collect parts from the vehicle prior to you attempting a repair of any kind.
• 11010552Nov 5, 2024Suspension. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2023-24 Accords FHEVs with a customer complaint of front damper noise. The original dampers may also be leaking. To better understand the cause of this condition, AHM would like to collect parts from the vehicle prior to you attempting a repair of any kind.
• 11010120Oct 21, 2024Suspension. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2023-24 Accords FHEVs with a customer complaint of front damper noise. The original dampers may also be leaking. To better understand the cause of this condition, AHM would like to collect parts from the vehicle prior to you attempting a repair of any kind.
• 11009177Oct 7, 2024Suspension. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2023-24 Accords FHEVs with a customer complaint of front damper noise. The original dampers may also be leaking. To better understand the cause of this condition, AHM would like to collect parts from the vehicle prior to you attempting a repair of any kind.
• 11009107Sep 19, 2024Engine. Owner Notification Letter - During manufacturing, certain engine blocks may have had the mounting surface of the crankshaft position sensor improperly machined. This may lead to a misfire under certain conditions, the Malfunction Indicator Lamp (MIL) illuminating or, potentially, damaging the catalytic converter.
• 11007884Sep 13, 2024Suspension. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2023-24 Accords FHEVs with a customer complaint of front damper noise. The original dampers may also be leaking. To better understand the cause of this condition, AHM would like to collect parts from the vehicle prior to you attempting a repair of any kind.
• 11006536Aug 6, 2024Engine. Owner Notification Letter - Your vehicle may be equipped with an improperly functioning on-board emission-related diagnostic system that violates California and Federal standards and regulations. While transitioning from hybrid mode (engine on) to EV mode, a software programming error results in the PGM-FI ECU resetting and inappropriately erasing stored memory data in the PGM-FI ECU. In some cases, the Malfunction…
• 11000274May 17, 2024Visibility (wipers, defrost, mirrors). Service Bulletin - A complaint of a creaking or squeaking noise coming from the passenger side dash area when the climate control switches from FRESH to RECIRC or RECIRC to FRESH due to a lack of grease applied to the recirculation motor/gear assembly.
• 10253307Apr 11, 2024Engine cooling. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2023-2024 Accord FHEVs & CR-V FHEVs with a customer complaint of the “Emissions System Warning” Malfunction Indicator Light (MIL) on with DTC P2101 (Throttle Actuator "A" Control Motor Circuit Range/Performance) stored. Customer may experience the vehicle going into “limp home” mode.
• 10247625Dec 12, 2023Transmission and drivetrain, Engine cooling. Techline - If you have a customer with a CR-V Hybrid/Accord Hybrid with DTC P0700 (Transmission Control System MIL Request) and check engine light is illuminated), they may notice a slight vibration (misfire) from the engine.
• 10245552Nov 10, 2023Electrical system. Service Bulletin - Some customers may experience the MIL (malfunction indicator lamp) illuminating when rapidly decelerating from a high vehicle speed due to Fluid aeration occurring in the e-CVT under high-g rapid deceleration.
• 10245274Nov 3, 2023Electrical system. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2023-2024 Accord FHEVs with a customer complaint of the display audio volume knob being inoperable for controlling the volume or turning the system on/off. To better understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind.
• 10244253Oct 13, 2023Electrical system. Service Bulletin - Some customers may experience the MIL (malfunction indicator lamp) illuminating when rapidly decelerating from a high vehicle speed due to fluid aeration occuring in the e-CVT under high-g rapid deceleration.
• 10244195Oct 4, 2023Engine cooling. Service Bulletin - The vehicle may experience a no start condition, low speed rough idle, engine RPM hunting, or have the following DTCs set P0017 (Camshaft Position (CMP) Sensor B and Crankshaft Position (CKP) Sensor Correlation) or P0339 (Crankshaft Position (CKP) Sensor Circuit Intermittent Interruption).
• 10243742Sep 29, 2023Electrical system. Service Bulletin - Some customers may experience the MIL (malfunction indicator lamp) illuminating when rapidly decelerating from a high vehicle speed due to fluid aeration occurring in the e-CVT under high-g rapid deceleration.
• 10240733Aug 2, 2023Electrical system. Service Bulletin - The telematics control unit has a parasitic draw that causes a dead 12 volt battery due to the telematics control unit failing to properly complete the provisioning process. This causes the unit to stay active, and drain the 12 volt battery.
• 10239703Jul 21, 2023Engine cooling. Service Bulletin - The vehicle may experience a no start condition, low speed rough idle, engine RPM hunting, or have the following DTCs set P0017 (Camshaft Position (CMP) Sensor B and Crankshaft Position (CKP) Sensor Correlation) or P0339 (Crankshaft Position (CKP) Sensor Circuit Intermittent Interruption).
• 10239702Jul 21, 2023Engine cooling. Dealer Message - Affected vehicles may be equipped with an incorrectly machined engine block at the crankshaft position sensor (CKP) mounting location. Improper manufacturing of the engine block at this location may prevent accurate CKP measurements leading to misfire and potential catalyst deterioration. This condition may affect a vehicle’s compliance with California and Federal emissions standards and…
• 10237950Jun 13, 2023Electrical system, Equipment. Service Bulletin - Some customers experienced a software error for code D015. A software issue is causing an internal error in the Infotainment Control Unit.
• 10237808Jun 2, 2023Electrical system. Service Bulletin - Some customers experience the following errors: DTC B2B05-92 and Code K201. These errors will prevent System Updates from functioning.
• 10237041May 19, 2023Electrical system, Equipment. Service Bulletin - A software issue is causing an internal error in the Infotainment Control Unit.
• 10237040May 19, 2023Electrical system. Service Bulletin - Some customers experience the following errors: DTC U1803 and Code TT06. A software issue is causing an internal Ethernet error in the CAN Gateway Unit (CGW).
• 10236570May 12, 2023Engine cooling. Dealer Message - American Honda is announcing a stop sale and emissions recall for certain 2023 Accord Hybrid and CR-V Hybrid vehicles. When the vehicle transitions from hybrid mode (engine on) to EV mode the FI-ECU may reset due to a software programming error and results in stored memory data in the PGM-FI ECU being inappropriately erased.
• 10236569May 12, 2023Engine cooling. Service Bulletin - While transitioning from Hybrid mode (engine on) to EV mode, the PGM-FI ECU adjusts the crank position for best location of engine start. A software programming error during this transition results in the PGM-FI ECU resetting and inappropriately erasing stored memory data in the PGM-FI ECU. In some cases, the Malfunction Indicator Lamp (MIL) may be set as a result.
• 10234577Apr 6, 2023Electrical system. Service News - Some customers are experience the following errors that have no effect on the drivability or operation of the vehicle. A software issue is causing an internal Ethernet error in the CAN Gateway Unit.

← All problems reported for the 2023 Honda Accord Hybrid