Service bulletins for the 2020 Acura MDX
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.
114 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
| BTI&03132023906 | 2023-03-18. Service bulletin. FUEL SYSTEM, GASOLINE; ENGINE AND ENGINE COOLING. Dealer Message - American Honda Motor Co., Inc. (AHM) is investigating certain 2020-2022 MDXs & RDXs with a client complaint of the Check Engine Light (CEL) on & the DTC P0087 (Fuel Rail Pressure Too Low [Loss of Fuel Pressure]) stored. In some cases, the customer may also experience such conditions as engine hard to start, no start or start & stumble in conjunction with CEL. To better understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind. |
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| B23-009 | 2023-03-18. Service bulletin. ENGINE AND ENGINE COOLING. Service Bulletin - The engine will not crank on the initial startup attempt after the vehicle has been exposed to precipitation and then freezing temperatures. |
| BTI&03062023902 | 2023-03-18. Service bulletin. EXTERIOR LIGHTING. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2019-2020 MDXs with a client complaint of the lid light (inner taillight) inop. To better understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind. Qualifiers AHM is interested ONLY if the vehicle meets the following requirements: 1. Manufactured date on the driver’s door jamb must be 12/2018 or later. 2. Must confirm that the lid light (inner taillight) is inop. 3. No history of side or rear impact collision. 4. No repair has been attempted. |
| BTI&02232023904 | 2023-03-02. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. Dealer Message - American Honda Motor Co., Inc. (AHM) is investigating certain 2020-2022 MDXs & RDXs with a client complaint of the Check Engine Light (CEL) on & the DTC P0087 (Fuel Rail Pressure Too Low [Loss of Fuel Pressure]) stored. In some cases, the customer may also experience such conditions as engine hard to start, no start or start & stumble in conjunction with CEL. |
| BTI&02092023904 | 2023-02-15. Service bulletin. EXTERIOR LIGHTING. Dealer Message- American Honda Motor Co., Inc. (AHM) is searching for certain 2019-2020 MDXs with a client complaint of the lid light (inner taillight) inop. To better understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind. |
| BTI&02072023902 | 2023-02-15. Service bulletin. FUEL SYSTEM, GASOLINE; ENGINE AND ENGINE COOLING. Dealer Message- American Honda Motor Co., Inc. (AHM) is investigating certain 2020-2022 MDXs & RDXs with a client complaint of the Check Engine Light (CEL) on & the DTC P0087 (Fuel Rail Pressure Too Low [Loss of Fuel Pressure]) stored. In some cases, the customer may also experience such conditions as engine hard to start, no start or start & stumble in conjunction with CEL. To better understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind. |
| B23-001 | 2023-02-03. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. Service Bulletin - Under certain circumstances, after coming to a stop and the idle stop feature engages, the vehicle may not automatically restart. Typically, the customer can immediately restart the vehicle by selecting Park and pushing the ENGINE START/STOP button. |
| BTI&01182023901 | 2023-01-25. Service bulletin. ELECTRICAL SYSTEM; FUEL SYSTEM, GASOLINE. Dealer Message - American Honda Motor Co., Inc. (AHM) is investigating certain 2020-2022 MDXs & RDXs with a client complaint of the Check Engine Light (CEL) on & the DTC P0087 (Fuel Rail Pressure Too Low [Loss of Fuel Pressure]) stored. In some cases, the customer may also experience such conditions as engine hard to start, no start or start & stumble in conjunction with CEL. To better understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind. |
| BTI&01032023904 | 2023-01-11. Service bulletin. ELECTRICAL SYSTEM; FUEL SYSTEM, GASOLINE. Dealer Message - American Honda Motor Co., Inc. (AHM) is investigating certain 2020-2022 MDXs & RDXs with a client complaint of the Check Engine Light (CEL) on & the DTC P0087 (Fuel Rail Pressure Too Low [Loss of Fuel Pressure]) stored. In some cases, the customer may also experience such conditions as engine hard to start, no start or start & stumble in conjunction with CEL. To better understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind. |
| BBOM01062023 | 2023-01-11. Service bulletin. ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:SOFTWARE; ENGINE AND ENGINE COOLING. Dealer Message - During development, the idle stop enable criteria was mis-set allowing idle stop to improperly engage while battery health is low. Under certain circumstances, after coming to a stop and engaging idle stop, the vehicle may not automatically restart. In most cases, the client can immediately restart the vehicle by selecting Park and pushing the Start button. |
| B23-002 | 2023-01-11. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:SOFTWARE. Service Bulletin - Under certain circumstances, after coming to a stop and engaging idle stop the vehicle may not restart automatically due to excessive cylinder pressure and/or low cranking torque. Typically, the client can immediately restart the vehicle by selecting Park and pressing the ENGINE START/STOP button. NOTE: If 23-001 Product Update: PGM-FI Idle Stop Software Update is applicable to the VIN, the PGM-FI software must be updated first before the warranty extension applies. Acura is extending the warranty coverage for valve adjustment and starter replacement related to this condition to 10 years from the original date of purchase with no mileage limitation. |
| B23-001 | 2023-01-11. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. Service Bulletin - Under certain circumstances, after coming to a stop and the idle stop feature engages, the vehicle may not automatically restart. Typically, the customer can immediately restart the vehicle by selecting Park and pushing the ENGINE START/STOP button. |
| BTI&12132022902 | 2022-12-21. Service bulletin. VISIBILITY. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2022 MDXs & 2020-2022 RDXs with a client complaint of the auto-open/close function on the sunshade/sunroof being lost (client has to continuously press on the button for movement). To better understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind. |
| B21-013 | 2022-10-05. Service bulletin. FUEL SYSTEM, GASOLINE. Service Bulletin - (Repair Procedure Revision) Due to swelling of the fuel pump motor impeller, the fuel pump may seize and stop working. If this occurs, the check engine light may be displayed with DTC P0087 (Fuel Rail Pressure Too Low) stored, the engine may not start, or the engine could stall while driving, increasing the risk of a crash. Replace the fuel pump motor. |
| ONLJ8F20220830 | 2022-09-09. Service bulletin. ELECTRICAL SYSTEM; FUEL SYSTEM, DIESEL:STORAGE:TANK ASSEMBLY; ENGINE AND ENGINE COOLING. Owner notification - Our records indicate that a Emissions Recall has not been completed on this vehicle. When the powertrain control module (PCM) detects a malfunction in one of the odd number transmission gears, it will set one of four diagnostic trouble codes (DTCs). Due to inappropriate calibration of the PCM, the On Board Diagnostic (OBD) system cannot properly clear the transmission permanent DTC as required. |
| B20-019 | 2022-07-07. Service bulletin. SEATS; EQUIPMENT. "Service bulletin - When speeding up, slowing down, stopping, or turning, you hear or feel a noticeable clicking/popping from the driver's and/or front passenger's seat-back. Clients sometimes compare this to someone kicking the back of the seat. This sensation can also happen when adjusting the seat or shifting your weight in it." |
| BTI&05102022901 | 2022-06-06. Service bulletin. FUEL SYSTEM, GASOLINE; ENGINE AND ENGINE COOLING. American Honda Motor Co., Inc. (AHM) is searching for certain 2016-2020 MDXs, RLXs & TLXs with a client complaint of the Malfunction Indicator Light (MIL) on with the DTC P030X (Cylinder Misfire Detected), P0171 & P0174 (Rear/Front Bank Fuel System Too Lean), or P219A&B (Air-Fuel Ratio Variation of Cylinder) stored. 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. |
| B98015 | 2022-05-09. Service bulletin. EQUIPMENT. Special Tool Loan Program: Under TOOLS AVAILABLE FOR LOAN, the list has been updated. |
| BTI&04132022901 | 2022-05-06. Service bulletin. ENGINE AND ENGINE COOLING; ENGINE AND ENGINE COOLING:ENGINE:CRANK/CAMSHAFT POSITION SENSOR. Dealer message - American Honda Motor Co., Inc. (AHM) is searching for certain 2016-2020 MDXs, RDXs & TLXs with a client complaint of the Malfunction Indicator Light (MIL) on with the DTC P030X (Cylinder Misfire Detected), P0171 & P0174 (Rear/Front Bank Fuel System Too Lean), or P219A&B (Air-Fuel Ratio Variation of Cylinder) stored. 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. |
| BTI&03282022903 | 2022-04-07. Service bulletin. ENGINE; FUEL SYSTEM, GASOLINE; ELECTRICAL SYSTEM. Dealer message - American Honda Motor Co., Inc. (AHM) is searching for certain 2016-2020 MDXs, RDXs & TLXs with a client complaint of the Malfunction Indicator Light (MIL) on with the DTC P030X (Cylinder Misfire Detected), P0171 & P0174 (Rear/Front Bank Fuel System Too Lean), or P219A&B (Air-Fuel Ratio Variation of Cylinder) stored. 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. |
| BTI&03112022904 | 2022-03-15. Service bulletin. FUEL SYSTEM, GASOLINE. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2016-2020 MDXs, RDXs & TLXs with a client complaint of the Malfunction Indicator Light (MIL) on with the DTC P030X (Cylinder Misfire Detected), P0171 & P0174 (Rear/Front Bank Fuel System Too Lean), or P219A&B (Air-Fuel Ratio Variation of Cylinder) stored. 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. |
| BTI&02222022902 | 2022-03-02. Service bulletin. FUEL SYSTEM, GASOLINE; ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2016-2020 MDXs, RDXs & TLXs with a client complaint of the Malfunction Indicator Light (MIL) on with the DTC P030X (Cylinder Misfire Detected), P0171 & P0174 (Rear/Front Bank Fuel System Too Lean), or P219A&B (Air-Fuel Ratio Variation of Cylinder) stored. 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. |
| BTI&02072022901 | 2022-02-15. Service bulletin. FUEL SYSTEM, GASOLINE; ELECTRICAL SYSTEM. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2016-2020 MDXs, RDXs & TLXs with a client complaint of the Malfunction Indicator Light (MIL) on with the DTC P030X (Cylinder Misfire Detected), P0171 & P0174 (Rear/Front Bank Fuel System Too Lean), or P219A&B (Air-Fuel Ratio Variation of Cylinder) stored. 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. |
| BTI&01212022902 | 2022-01-26. Service bulletin. ENGINE; FUEL SYSTEM, GASOLINE; ELECTRICAL SYSTEM. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2016-2020 MDXs, RDXs & TLXs with a client complaint of the Malfunction Indicator Light (MIL) on with the DTC P030X (Cylinder Misfire Detected), P0171 & P0174 (Rear/Front Bank Fuel System Too Lean), or P219A&B (Air-Fuel Ratio Variation of Cylinder) stored. 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. |
| BTI&01032022904 | 2022-01-12. Service bulletin. FUEL SYSTEM, GASOLINE. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2016-2020 MDXs, RDXs & TLXs with a client complaint of the Malfunction Indicator Light (MIL) on with the DTC P030X (Cylinder Misfire Detected), P0171 & P0174 (Rear/Front Bank Fuel System Too Lean), or P219A&B (Air-Fuel Ratio Variation of Cylinder) stored. 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. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.