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Service bulletins for the 2012 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.

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

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Only bulletins with component: Engine are shown. Show all

Bulletins, newest first
ONL6BD062420212021-07-03. Service bulletin. ENGINE AND ENGINE COOLING; POWER TRAIN. Owner Notification Letter - Our records indicate that a EMISSIONS RECALL has not been completed on this vehicle (Vehicle Identification Number XXXXXXXXXXXXXXXXX). Under certain circumstances, your vehicle's powertrain control module (PCM) may not properly adjust the air-fuel ratio resulting in your vehicle releasing air pollutants which exceed California and Federal standards. In addition, your vehicle is equipped with an improperly functioning on-board emission-related diagnostic system that violates California and Federal standards and regulations.
ONLH98022520212021-03-02. Service bulletin. ENGINE AND ENGINE COOLING. Owner Notification Letter - This warranty only covers vehicles that have a defective motor power inverter, also known as intelligent inverter unit. The motor power inverter may fail over time due to a defective solder joint. This failure will result in the charging system, PGM-FI system, and IMA system warning lights coming on. The decreased power supply to the 12-volt battery can lead to a series of system malfunctions.
ABOM121820209012021-01-05. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. Dealer Message - Today, December 18, 2020, American Honda is announcing a warranty extension for certain 2012-2015 Civic Hybrid vehicles. This warranty extension covers the intelligent inverter unit (IIU) to address possible concerns of various warning lights turning on and diminishing electric motor power, braking or steering assistance control. American Honda is extending the warranty coverage of the IIU to 15 years from the original date of purchase or 150,000 miles, whichever comes first.
A20-0302020-12-23. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM; EQUIPMENT. "Service Bulletin - The Motor Power Inverter (MPI), also known as the Intelligent Inverter Unit (IIU), may fail over time due to a defective solder joint. This failure may result in one or more of the following DTC(s): -P1440 (MPI Module Output Circuit Malfunction) -P1437 (MPI Module Short Circuit) -P15A5 (Motor Current Sensor Circuit Malfunction) -P0A78 (MPI Module Internal Circuit Malfunction) -P0AE1 (Bypass Contractor Malfunction) -P0A3C (Motor Control Module (MCM) Overheating) -P0A3F (Motor Rotor Position Sensor Circuit Malfunction) -P0DA8 (MPI Module Voltage Malfunction) -P1634 (MPI Module Signal Circuit Malfunction) -P0AEE (MPI Internal Circuit Malfunction) -P0A27 (High Voltage Contactor Stays Activated) American Honda is extending the warranty coverage of the motor power inverter (MPI) on these vehicles to 15 years from the original date of purchase or 150,000 miles, whichever comes first."
ONL6BD103120192019-11-05. Service bulletin. ENGINE AND ENGINE COOLING; POWER TRAIN. Owner Notification Letter - Under certain circumstances, your vehicle's powertrain control module (PCM) may not properly adjust the air-fuel ratio resulting in your vehicle releasing air pollutants which exceed California and Federal standards. In addition, your vehicle is equipped with an improperly functioning on-board emission-related diagnostic system that violates California and Federal standards and regulations.
ABOM092420192019-10-03. Service bulletin. ENGINE AND ENGINE COOLING; POWER TRAIN. Dealer Message - Today, September 24, 2019, American Honda is announcing a stop sale and emissions recall for certain 2012 Civic vehicles that may be releasing air pollutants that exceed applicable state and federal standards.
A19-1062019-10-03. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ENGINE AND ENGINE COOLING; POWER TRAIN. Service Bulletin - Due to an improper PCM calibration, after starting the engine the PCM cannot properly adjust the air-fuel ratio under certain conditions and the on-board emission-related diagnostic system may not appropriately detect a malfuction. As a result, vehicle emissions may exceed applicable emissions standards and the vehicle contains an improperly functioning on-board emission-related diagnostic system that violates applicable state and federal standards.
A17-0232019-10-03. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); POWER TRAIN; ENGINE AND ENGINE COOLING. Service Bulletin - Due to an improper PCM calibration, under certain conditions after starting the engine the PCM cannot properly adjust the air-fuel ratio. As a result, vehicle emissions may exceed applicable standards.
A180702018-09-04. Service bulletin. ENGINE AND ENGINE COOLING. Service bulletin - Emission certification labels that were replaced on a small number of vehicles may have been replaced with a label listing incorrect information. The affected emission labels are replacement service parts, and were not installed at the factory; they were installed during postmanufacturing repairs that required replacement of the underlying part. This will cause the vehicle to be non-compliant with emissions regulations.
Service Bulletin2018-06-11. Service bulletin. ENGINE AND ENGINE COOLING. Service bulletin - The starter motor intermittently whines and does not crank the engine. The starter pinion does not extend far enough to properly engage the engine flywheel.
A12-0692018-03-12. Service bulletin. ENGINE. Service bulletin - The oil consumption is more than the customer expects; the engine oil level is low on the dipstick sooner than expected based on overall vehicle usage, condition, and maintenance history. In some cases, the oil warning light may come on.
Service Bulletin2017-08-15. Service bulletin. ENGINE. Service bulletin - There is a chirping from the engine area while driving on rough roads in hot weather. The side engine mount's internal components are rubbing together, causing a noise.
ABOM042120179012017-06-30. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). "DEALER MESSAGE - TODAY, APRIL 21, 2017, AMERICAN HONDA MOTOR, CO., INC. IS NOTIFYING ALL DEALERS OF A VOLUNTARY EMISSIONS RECALL FOR CERTAIN MODEL YEAR 2012 HONDA CIVIC PZEV VEHICLES TO ADDRESS THE POSSIBILITY OF NON-METHANE ORGANIC GAS (NMOG) EMISSIONS ABOVE THE REGULATION THRESHOLD."
A17-0232017-06-30. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ELECTRICAL SYSTEM:SOFTWARE; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. SERVICE BULLETIN - DUE TO AN IMPROPER PCM CALIBRATION, UNDER CERTAIN CONDITIONS AFTER STARTING THE ENGINE THE PCM CANNOT PROPERLY ADJUST THE AIR-FUEL RATIO. AS A RESULT, VEHICLE EMISSIONS MAY EXCEED APPLICABLE STANDARDS.
A13-0212017-05-12. Service bulletin. ENGINE. "SERVICE BULLETIN - THE MIL COMES ON WITH ONE OF THESE DTCS: • P2646/P2651 (ROCKER ARM OIL PRESSURE SWITCH CIRCUIT LOW VOLTAGE). • P2647/P2652 (ROCKER ARM OIL PRESSURE SWITCH CIRCUIT HIGH VOLTAGE). NOTE: THE SYMPTOM MAY BE INTERMITTENT AND YOU MAY NOT BE ABLE TO DUPLICATE IT AFTER CLEARING THE DTC. THE ROCKER ARM OIL PRESSURE SWITCH MAY FAIL INTERMITTENTLY."
111720142015-04-23. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. HONDA: CIVIC 2012-2013 : COMPLAINTS OF INCORRECT FUEL GAUGE. *LJ
IN-08-20132013-10-18. Service bulletin. ENGINE. AMERICAN HONDA: VEHICLE MAY EXPERIENCE AN ENGINE SURGE UPON ACCELERATING FROM A STOP. AHM REQUESTS TO INSPECT VEHICLE BEFORE ANY REPAIRS ARE ATTEMPTED. *JS
IN-20122013-09-26. Service bulletin. ENGINE. AMERICAN HONDA: INVESTIGATION OF AN ENGINE SURGE ON SPECIFIC VEHICLES, WHEN ACCELERATING FROM A STOP. INSPECTION IS TO OCCUR PRIOR TO ATTEMPTING A REPAIR. *JS
A-13-0212013-09-24. Service bulletin. ENGINE. HONDA: DTC P2646/P2651 OR P2647/2652 MAY BE SET. THE ROCKER ARM OIL PRESSURE SWITCH MAY NEED TO BE REPLACED. ALSO INCLUDED MODEL CIVIC SI MODEL YEAR 2002-2005. *JS
HSN-13052013-08-05. Service bulletin. ENGINE; TIRES; WHEELS; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.; SERVICE BRAKES. HONDA: THE ENGINE SHUTS OFF, POWER ON, BUT IN ACCESSORY; NEVER USE CONVENTIONAL WHEEL & TIRE ASSEMBLIES ON PAX VEHICLES; MIL ON AFTER THROTTLE BODY CLEANING OR REPLACEMENT; S/M FIX BRAKE SYSTEM BLEEDING, DIALOGUE FOR DVD SURROUND SOUND FROM FRONT SPEAKERS ONLY. VARIOUS MODELS AND MODEL YEARS. *PE
SB-12-0472012-09-11. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CRANKCASE (PCV). HONDA: CERTAIN MODEL YEAR VEHICLES WOULD RANDOMLY EXPERIENCE MISFIRE DUE TO POSSIBLE INCOMPLETE CRANKSHAFT POSITION PATTERN. 2012 MODEL CIVIC. *PE
12-0272012-05-02. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. HONDA: IF THE ACCELERATOR PEDAL IS PRESSED DURING A COLD START, THE ENGINE MAY START, THEN STALL. THE PCM MISINTERPRETS THE AMOUNT OF FUEL NEEDED TO START THE ENGINE. ALSO INCLUDED MODEL CIVIC SI 2/4 DOOR MODEL YEAR 2012; MODEL CIVIC M/T AND A/T 2/4 DOOR MODEL YEAR 2012. *JS

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