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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

Only bulletins with component: Engine are shown. Show all

Bulletins, newest first
BTI&022220229022022-03-02. 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&012120229022022-01-26. 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&082520219022021-09-02. Service bulletin. ENGINE AND ENGINE COOLING. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2020 MDXs with a client complaint of the Malfunction Indicator Light (MIL) on with specific DTCs (see the full list below) 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&082520219012021-09-02. Service bulletin. ENGINE AND ENGINE COOLING. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2017-2020 MDX V6s (non-Hybrid) with a client complaint of the Malfunction Indicator Light (MIL) on with the misfire DTCs P0300-P0306 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&080920219042021-08-18. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2017-2020 MDX V6s (non-Hybrid) with a client complaint of the Malfunction Indicator Light (MIL) on with the misfire DTCs P0300-P0306 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&080920219032021-08-18. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2020 MDXs with a client complaint of the Malfunction Indicator Light (MIL) on with specific DTCs (see the full list below) 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&072220219042021-07-27. Service bulletin. ENGINE AND ENGINE COOLING. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2017-2020 MDX V6s (non-Hybrid) with a client complaint of the Malfunction Indicator Light (MIL) on with the misfire DTCs P0300-P0306 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&072220219032021-07-27. Service bulletin. ENGINE AND ENGINE COOLING. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2020 MDXs with a client complaint of the Malfunction Indicator Light (MIL) on with specific DTCs (see the full list below) 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&070720219072021-07-20. Service bulletin. ENGINE AND ENGINE COOLING. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2020 MDXs with a client complaint of the Malfunction Indicator Light (MIL) on with specific DTCs (see the full list below) 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&070720219062021-07-20. Service bulletin. ENGINE AND ENGINE COOLING. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2017-2020 MDX V6s (non-Hybrid) with a client complaint of the Malfunction Indicator Light (MIL) on with the misfire DTCs P0300-P0306 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&061520219052021-06-22. Service bulletin. ENGINE AND ENGINE COOLING. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2017-2020 MDX V6s (non-Hybrid) with a client complaint of the Malfunction Indicator Light (MIL) on with the misfire DTCs P0300-P0306 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&061520219032021-06-22. Service bulletin. ENGINE AND ENGINE COOLING. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2020 MDXs with a client complaint of the Malfunction Indicator Light (MIL) on with specific DTCs (see the full list below) 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.
BPaS052620219032021-06-04. Service bulletin. ENGINE AND ENGINE COOLING. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2017-2020 MDX V6s (non-Hybrid) with a client complaint of the Malfunction Indicator Light (MIL) on with the misfire DTCs P0300-P0306 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.
BPaS052620219012021-06-04. Service bulletin. ENGINE AND ENGINE COOLING. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2020 MDXs with a client complaint of the Malfunction Indicator Light (MIL) on with specific DTCs (see the full list below) 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.
BPaS042220219022021-04-27. Service bulletin. ENGINE AND ENGINE COOLING. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2018-2020 MDXs (non-Hybrid) & TLX V6s with a client complaint of the Malfunction Indicator Light (MIL) on with the DTC P0441 (EVAP System Purge Flow Malfunction) 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.
BPaS041620212021-04-21. Service bulletin. ENGINE AND ENGINE COOLING. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2017-2020 MDX V6s (non-Hybrid) with a client complaint of the Malfunction Indicator Light (MIL) on with the misfire DTC P030X (Please provide the full DTC description) 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.
BPaS032520219052021-04-06. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT; ELECTRICAL SYSTEM. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2020 MDXs with a client complaint of the Malfunction Indicator Light (MIL) on with specific DTCs (see the full list below) 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.
BPaS032520219042021-04-06. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT; VISIBILITY. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2019-2020 MDXs with a client complaint of a blower motor noise. The noise can be described as a high pitch or a whistle noise. 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.
BPaS022620219062021-03-02. Service bulletin. ENGINE AND ENGINE COOLING. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2020 MDXs with a client complaint of the Malfunction Indicator Light (MIL) on with specific DTCs (see the full list below) 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.
BPaS021020219022021-02-18. Service bulletin. ENGINE AND ENGINE COOLING. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2020 MDXs with a client complaint of the Malfunction Indicator Light (MIL) on with specific DTCs (see the full list below) 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.
BPaS012220219062021-01-30. Service bulletin. ENGINE AND ENGINE COOLING; FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM:THROTTLEBODY/MANIFOLD. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2020 MDXs with a client complaint of the Malfunction Indicator Light (MIL) on with specific DTCs (see the full list below) 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.
BPaS120520209052020-12-09. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN; EQUIPMENT ADAPTIVE/MOBILITY. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2019-2020 MDXs with a client complaint of a blower motor noise. The noise can be described as a high pitch or a whistle noise. 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.
BBOM091520202020-09-22. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL; ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). Dealer Message - Today, September 15, 2020, Acura is announcing a stop sale and emissions recall for certain 2017-2020 MDX Sport Hybrid and 2014, 2016-2020 RLX Sport Hybrid vehicles that may not properly clear specific diagnostic trouble codes (DTC). Presence of these codes may prevent the vehicle from passing a smog test. Refer to your eResponsibility report or do an iN VIN status inquiry to determine which units in your inventory are affected.

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