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Service bulletins for the 2020 Honda Accord

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.

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

About C1120 on the 2020 Honda Accord: what the code means, and the bulletins and recalls about the same components.

By type

By component

By trouble code

Only bulletins with trouble code: C1120 are shown. Show all

Bulletins, newest first
APaS072120209062020-07-28. Service bulletin. PARKING BRAKE. Dealer Message - American Honda Motor Co., Inc. (AHM) is searching for certain 2018-2020 Accords with a customer complaint of the red BRAKE warning light on with the DTC C1120-14 (Electric Parking Brake Switch Circuit Malfunction) stored or in active fault. 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.
APaS070620209092020-07-16. Service bulletin. EQUIPMENT; SERVICE BRAKES, ELECTRIC. Dealer Message - American Honda Motor Co., Inc. (AHM) is investigating certain 2018-2020 Accords with a customer complaint of the red BRAKE warning light on with the DTC C1120-14 (Electric Parking Brake Switch Circuit Malfunction) stored or in active fault. 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.
APaS062920202020-07-02. Service bulletin. PARKING BRAKE. Dealer Message - American Honda Motor Co., Inc. (AHM) is investigating certain 2018-2020 Accords with a customer complaint of the red BRAKE warning light on with the DTC C1120-14 (Electric Parking Brake Switch Circuit Malfunction) stored or in active fault. 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.
APaS061920209022020-06-25. Service bulletin. PARKING BRAKE. Dealer Message - American Honda Motor Co., Inc. (AHM) is investigating certain 2018-2020 Accords with a customer complaint of the red BRAKE warning light on with the DTC C1120-14 (Electric Parking Brake Switch Circuit Malfunction) stored or in active fault. 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.
APaS060520209082020-06-11. Service bulletin. SERVICE BRAKES, HYDRAULIC. Dealer Message - American Honda Motor Co., Inc. (AHM) is investigating certain 2018-2020 Accords with a customer complaint of the red BRAKE warning light on with the DTC C1120-14 (Electric Parking Brake Switch Circuit Malfunction) stored or in active fault. 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.
APaS051920209042020-05-28. Service bulletin. PARKING BRAKE. Dealer Message - American Honda Motor Co., Inc. (AHM) is investigating certain 2018-2020 Accords with a customer complaint of the red BRAKE warning light on with the DTC C1120-14 (Electric Parking Brake Switch Circuit Malfunction) stored or in active fault. 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.
APaS050220209012020-05-13. Service bulletin. ENGINE AND ENGINE COOLING; PARKING BRAKE. Dealer Message - American Honda Motor Co., Inc. (AHM) is investigating certain 2018-2020 Accords with a customer complaint of the red BRAKE warning light on with the DTC C1120-14 (Electric Parking Brake Switch Circuit Malfunction) stored or in active fault. 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.
APaS041620209062020-05-05. Service bulletin. SERVICE BRAKES, HYDRAULIC. Dealer message - American Honda Motor Co., Inc. (AHM) is investigating certain 2018-2020 Accords with a customer complaint of the red BRAKE warning light on with the DTC C1120-14 (Electric Parking Brake Switch Circuit Malfunction) stored or in active fault. 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.
APaS030320209052020-03-11. Service bulletin. SERVICE BRAKES, ELECTRIC; EQUIPMENT:ELECTRICAL. Dealer Message - American Honda Motor Co., Inc. (AHM) is investigating certain 2018-2020 Accords with a customer complaint of the red BRAKE warning light on with the DTC C1120-14 (Electric Parking Brake Switch Circuit Malfunction) stored or in active fault. To better understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind.
APaS021320209072020-02-19. Service bulletin. PARKING BRAKE; ELECTRICAL SYSTEM; EXTERIOR LIGHTING:BRAKE LIGHTS:SWITCH. Dealer Message - American Honda Motor Co., Inc. (AHM) is investigating certain 2018-2020 Accords with a customer complaint of the red BRAKE warning light on with the DTC C1120-14 (Electric Parking Brake Switch Circuit Malfunction) stored or in active fault. To better understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind.
APaS012720209042020-02-04. Service bulletin. ENGINE AND ENGINE COOLING; PARKING BRAKE. Dealer Message - American Honda Motor Co., Inc. (AHM) is investigating certain 2018-2020 Accords with a customer complaint of the Check Engine Light (CEL) on with the DTC C1120-14 (Electric Parking Brake Switch Circuit Malfunction) in active fault. To better understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind.
APaS010820209012020-01-15. Service bulletin. ENGINE AND ENGINE COOLING; PARKING BRAKE. Dealer Message - American Honda Motor Co., Inc. (AHM) is investigating certain 2018-2020 Accords with a customer complaint of the Check Engine Light (CEL) on with the DTC C1120-14 (Electric Parking Brake Switch Circuit Malfunction) in active fault. To better understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind.
APaS010720209102020-01-15. Service bulletin. ENGINE AND ENGINE COOLING; PARKING BRAKE. Dealer Message - American Honda Motor Co., Inc. (AHM) is investigating certain 2018-2020 Accords with a customer complaint of the Check Engine Light (CEL) on with the DTC C1120-14 (Electric Parking Brake Switch Circuit Malfunction) in active fault. To better understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind.
APaS121220192019-12-18. Service bulletin. ENGINE AND ENGINE COOLING. Dealer Message - American Honda Motor Co., Inc. (AHM) is investigating certain 2018-2020 Accords with a customer complaint of the Check Engine Light (CEL) on with the DTC C1120-14 (Electric Parking Brake Switch Circuit Malfunction) in active fault. To better understand the cause of this condition, AHM would like to inspect 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.