VIN / Build Split
VIN pos 4-8 identifies model/body/transmission/engine. Honda WMI: 1HG, 2HG, 5J6. Position 4-5 = model code. Position 10 = model year code.
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2021 Honda Civic Supported Services
2021 Honda Civic
ADAS calibration, module programming, and security relearns
Trims: LX, Sport, EX, EX-L, Touring, Si, Type R. Honda Sensing standard all trims (2022+).
Technical snapshot
- Platform Honda Civic Platform - 10th Gen FC/FK (Final Year)
- CAN Architecture HS-CAN (500 kbps) + MS-CAN (125 kbps); OBD2 DLC Pin 6/14 HS-CAN; DLC under driver dash
- Security Honda Smart Entry - EEPROM-based key security; no OBD pin code extraction; AKL requires Honda iN dealer authorization + HDS; max 8 keys per vehicle
What do you need fixed?
Choose a service to start your quote.
OVERVIEW
Expert ADAS calibration, module programming, and diagnostic recovery for the 2021 Honda Civic. On this vehicle we cover documented systems include Forward Camera (Monocular), Forward Radar (77GHz), and Honda Sensing Suite (EX+ trims), this Honda Civic Platform - 10th Gen FC/FK (Final Year) platform vehicle, Honda Immobilizer - EEPROM-based Smart Entry (10th Gen FC/FK) immobilizer support, Honda Display Audio infotainment programming. Mobile across the DFW Metroplex; mail-in module service is available nationwide.
Platform
Honda Civic Platform - 10th Gen FC/FK (Final Year)
Production
2006-present
Trim Levels
Trims: LX, Sport, EX, EX-L, Touring, Si, Type R. Honda Sensing standard all trims (2022+).
Drivetrain
FWD
Engine
-
CAN Speed
HS-CAN (500 kbps) + MS-CAN (125 kbps); OBD2 DLC Pin 6/14 HS-CAN; DLC under driver dash
YEAR-SPECIFIC NOTES
Infotainment
Honda Display Audio
Exact-year service summary for 2021 Honda Civic
ADAS coverage
This 2021 Honda Civic page documents 3 ADAS systems, including Forward Camera (Monocular), Forward Radar (77GHz), and Honda Sensing Suite (EX+ trims).
View ADAS dataCalibration triggers
Documented calibration triggers include Windshield Replacement, Forward Camera Replacement, Front Radar Replacement, and VSA Modulator Replacement. Use the ADAS tab for the full trigger list.
View triggersTarget setup planning
Approved target-planning data maps this vehicle family to LAM01-04-L&LAM01-04-R. Primary Acura/Honda static target set for FCW/LDW and LKAS forward-camera calibration planning. Confirm VIN, trim, DTCs, sensor part number, and scan-tool procedure before setup.
View ADAS dataProgrammable modules
This page indexes 23 programmable module records across SRS, ECU, BCM, TCU/TCM, ABS, and IPC coverage.
View modulesGateway and security
This page includes 7 gateway, immobilizer, or key-security records for this 2021 Honda Civic.
View securityCore Auto Logic capability
Core Auto Logic supports exact-year diagnostics, ADAS calibration, module programming, and security-access planning for the 2021 Honda Civic using the documented systems and module data on this page.
Choose a sectionWhat changes on this exact year
Feature availability
Honda Sensing standard on EX and above: Collision Mitigation Braking System/Auto - Standard; Platform: Honda Civic Platform - Confirmed
Driver-assist suite
Honda Sensing standard on EX and above: Collision Mitigation Braking System/Automatic Emergency Braking, Lane Keeping Assist System, LDWS, Adaptive Cruise Control with low-speed follow, Road Departure Mitigation. Not standard on LX trim. Final year of 10th gen Honda Sensing hardware.
VIN and build split
VIN pos 4-8 identifies model/body/transmission/engine. Honda WMI: 1HG, 2HG, 5J6. Position 4-5 = model code. Position 10 = model year code.
Infotainment context
Honda Display Audio; 7" Display Audio (LX/Sport/EX); 8" Navigation Display Audio (EX-L/Touring); Apple CarPlay + Android Auto on EX+
Network and access
CAN: HS-CAN (500 kbps) + MS-CAN (125 kbps); OBD2 DLC Pin 6/14 HS-CAN; DLC under driver dash
Tool access for this exact year
Representative tool access paths for this exact model year, gated by the vehicle data and source packet we currently trust.
Factory scan, coding, and calibration access
Honda HDS / i-HDS / Honda Diagnostic Software
Factory routines and secure server authorization control this path when aftermarket coverage is not enough for the VIN.
ADAS scan, setup, and verification
Autel, Launch Tech, Topdon
Used where aftermarket coverage supports the procedure; OEM software remains required for locked factory routines.
Bench cloning and chip-level recovery
Alientech / Autotuner / Orange5 / Scanmatik / Flex / VVDI2 / PCMFlash / CGDI / X-Prog
Used only when the module, donor data, EEPROM, MCU, or crash-data workflow requires bench or chip-level handling.
Bench/chip-level only
Choose a section to view data
SUPPORTED SYSTEMS
What we service on this vehicle
Documented module coverage for the 2021 Honda Civic. Counts reflect modules our techs have programmed or calibrated on this exact platform.
ADAS Calibration
3 modules documented
Forward camera, radar, surround-view and lane-keep recalibration after windshield, suspension or fascia work.
Open ADAS tabEngine / ECU Programming
4 modules documented
Powertrain reprogramming, calibration updates, replacement ECU configuration and security access.
Open Modules tabBCM / Body Programming
3 modules documented
Body control module, gateway and accessory programming. Includes feature-bit reconfiguration.
Open Modules tabTCU / Transmission
1 module documented
Transmission control module reprogramming, adaptive learning reset and replacement TCM clone.
Open Modules tabSRS / Airbag Reset
7 modules documented
Crash-data clear, hard-code reset and replacement airbag module configuration.
Open Modules tabABS / Brake Module
3 modules documented
ABS / EBCM bleed support, replacement module coding and yaw-rate sensor calibration.
Open Modules tabIPC, SAS & Other Modules
2 modules documented
Instrument cluster cloning, steering angle sensor calibration and other supporting modules.
Open Modules tabConnectivity & Accessories
3 modules documented
Infotainment radio, surround view, remote start, trailer brake controller and other equipped systems.
Open Modules tabRecalibration Triggers
10 modules documented
Service events that require ADAS recalibration on this vehicle. Tap to see what triggers what.
Open ADAS tabNeed something not listed? Most undocumented modules can still be programmed.
Get a QuoteFeature availability 2
Honda Sensing standard on EX and above: Collision Mitigation Braking System/Auto
StandardCalibration required after windshield replacement, camera/radar service, or structural repair affecting sensor alignment.
Platform: Honda Civic Platform
ConfirmedVerify platform code matches when cross-referencing part numbers across model years.
WHAT WE RESOLVE
Common issues on this vehicle
Common Honda Civic issues we resolve on this platform: Forward Camera (Monocular), Forward Radar (77GHz), and Honda Sensing Suite (EX+ trims) recalibration after windshield/bumper/suspension/CCM service. Module programming for replacement ECU/PCM, BCM, TCU, or accessory modules - Honda Civic Platform - 10th Gen FC/FK (Final Year) platform uses HS-CAN (500 kbps) + MS-CAN (125 kbps); OBD2 DLC Pin 6/14 HS-CAN; DLC under driver dash.
ADAS CALIBRATION MATRIX
ADAS systems on this vehicle
Honda Sensing standard on EX and above: Collision Mitigation Braking System/Automatic Emergency Braking, Lane Keeping Assist System, LDWS, Adaptive Cruise Control with low-speed follow, Road Departure Mitigation. Not standard on LX trim. Final year of 10th gen Honda Sensing hardware.
Scroll for part numbers and Details
| System | Type | Category | Cal. Type | Supported | Part # | Actions |
|---|---|---|---|---|---|---|
| Forward Camera (Monocular) | Camera | ADAS | Static | YES | 36160-TBG-A01 | |
| Forward Radar (77GHz) | Radar | ADAS | Static + Dynamic | YES | 36802-TGG-A11 | |
| Honda Sensing Suite (EX+ trims) | Software | ADAS | None | YES | (CAMERA 36160-TBG-A01 |
ADAS SYSTEM
YES Supported
Identification
- System type
- Module category
- Sensor location
Part Numbers
- OEM
- Alternative
Calibration & Triggers
- Calibration type
- Programming approach
- Requires PMI
- Trigger events
Technical Notes
- Chip / MCU
- Service notes
Need this calibrated?
Get a quote for ADAS calibration WHEN IS CALIBRATION REQUIRED?
Triggers for ADAS recalibration
Windshield Replacement
HDS 10th gen camera static cal required on EX+ trims. Camera: 36160-TBG-A01. Target at ~1m from front bumper, level surface. IMPORTANT: 2021 is final 10th gen year - use FC/FK procedure only, NOT 11th gen FE/FL procedure. All Sensing lamps must extinguish.
Forward Camera Replacement
HDS camera init + 10th gen static cal. Confirm part 36160-TBG-A01. Do not use 11th gen procedure. Verify all Sensing functions DTC-free.
Front Radar Replacement
HDS radar init + static cal. Pair with camera cal. Level surface. Verify ACC/CMBS DTCs clear.
VSA Modulator Replacement
HDS motorized brake bleed. ABS/VSA DTC clear. Firm pedal verify. Road test 15+ mph.
ECM Replacement
HDS flash + VIN + IMMO seed + throttle init + idle learn. Use correct variant calibration (L15B7, Si, or Type R FK8).
Smart Entry ECU Replacement
Honda iN authorization. All keys present. HDS 10th gen registration. Max 8 keys.
BCM Replacement
HDS BCM programming + VIN/config data write. Verify body electrical. TPMS re-registration may be required.
Any Front-End Collision
Inspect and recalibrate forward camera after any front-end collision using HDS.
Front Bumper Repair or Replacement
Forward radar angular alignment required after front bumper R&R. Use HDS.
Forward Radar Replacement
Radar module replacement requires alignment/calibration using HDS.
SRS Modules
SRS Control Unit 7 records
Under center console
- Part number
- 77960-TBA-A030-M2-ENCRYPTED
- Location
- Under center console
- Manufacturer
- Denso
- Notes
- Requires Honda HDS or J2534 for SRS reset. DTC B1000 common after crash clear. Battery disconnect required before removal. Module relearn via HDS after installation.
Under center console
- Part number
- 77960-TBA-X030-M2
- Location
- Under center console
- Manufacturer
- Denso
- Notes
- Requires Honda HDS or J2534 for SRS reset. DTC B1000 common after crash clear. Battery disconnect required before removal. Module relearn via HDS after installation.
Under center console
- Part number
- 77960-TBA-X040-M2
- Location
- Under center console
- Manufacturer
- Denso
- Notes
- Requires Honda HDS or J2534 for SRS reset. DTC B1000 common after crash clear. Battery disconnect required before removal. Module relearn via HDS after installation.
Under center console
- Part number
- 77960-TBF-A020-M2
- Location
- Under center console
- Manufacturer
- Denso
- Notes
- Requires Honda HDS or J2534 for SRS reset. DTC B1000 common after crash clear. Battery disconnect required before removal. Module relearn via HDS after installation.
Under center console
- Part number
- 77960-TBJ-A020-M2
- Location
- Under center console
- Manufacturer
- Denso
- Notes
- Requires Honda HDS or J2534 for SRS reset. DTC B1000 common after crash clear. Battery disconnect required before removal. Module relearn via HDS after installation.
Under center console
- Part number
- 77960-TGH-A020-M2
- Location
- Under center console
- Manufacturer
- Denso
- Notes
- Requires Honda HDS or J2534 for SRS reset. DTC B1000 common after crash clear. Battery disconnect required before removal. Module relearn via HDS after installation.
Under center console
- Part number
- 7880-TGG-A815-M1
- Location
- Under center console
- Manufacturer
- Denso
- Notes
- Requires Honda HDS or J2534 for SRS reset. DTC B1000 common after crash clear. Battery disconnect required before removal. Module relearn via HDS after installation.
ECU Modules
ECM - 1.5L L15B7 VTEC Turbo 37820-5AA-A78
- Part number
- 37820-5AA-A78
- Notes
- HDS flash + VIN + IMMO seed write + throttle init + idle learn. Final year of L15B7 in Civic. 11th gen uses L15BE - different ECM, different calibration.
ECM - Civic Si K20C1 (FC2 SI SPECIFIC - VERIFY VIA HDS)
- Part number
- (FC2 SI SPECIFIC - VERIFY VIA HDS)
- Notes
- Si-specific calibration. HDS flash + VIN + IMMO. Throttle init + idle learn. Verify Si powertrain function.
ECM - Civic Type R K20C1 (FK8) 37820-5U5-A62
- Part number
- 37820-5U5-A62
- Notes
- Type R FK8. HDS flash + VIN + IMMO. FK8-specific calibration file. Verify drive modes and powertrain.
CVT Control Unit (L15B7 models) (10TH GEN CVT UNIT)
- Part number
- (10TH GEN CVT UNIT)
- Notes
- HDS CVT programming. Honda HCF-2 fluid only. 50-100 mile adaptive relearn.
BCM Modules
Body Control Module (BCM) 38800-TGG-A31
- Part number
- 38800-TGG-A31
- Notes
- HDS BCM programming + VIN/config write after replacement. Final year of TGG BCM - not interchangeable with 11th gen T20 BCM.
Smart Entry Door Lock Actuator (Front) 72147-TGG-A11
- Part number
- 72147-TGG-A11
- Notes
- Front door Smart Entry actuator. HDS body DTC clear post-replacement. Verify Smart Entry proximity function.
Keyless Access Control Unit (Smart Entry ECU) ~35100-TGG-A01
- Part number
- ~35100-TGG-A01
- Notes
- Honda iN + HDS on replacement. All keys present. Max 8 keys. Final 10th gen part - not interchangeable with 11th gen.
TCU / TCM Transmission Modules
TCU - CVT Continuously Variable 28100-5CG
- Part number
- 28100-5CG
- Protocol / method
- J2534
- Coding required
- Yes
- Cloning supported
- Yes
- Chip / MCU
- Renesas SH72546
- Notes
- Honda HDS or J2534 required. Honda HCF-2 CVT fluid. TCM relearn via drive cycle. Final year 10th Gen.
ABS / Brake Modules
VSA Modulator-Control Unit 57110-TGH-315
- Part number
- 57110-TGH-315
- Notes
- HDS motorized brake bleed required after replacement - manual bleed insufficient. ABS/VSA init + DTC clear. Firm pedal verify. Road test 15+ mph.
Wheel Speed Sensor - Front (each)
- Notes
- Active magnetic. HDS DTC clear + road test 15+ mph.
Wheel Speed Sensor - Rear (each)
- Notes
- Active magnetic. Same as front procedure.
Other Modules (IPC, SAS)
Instrument Panel Cluster (IPC) 78100-TBA-A11
- Part number
- 78100-TBA-A11
- Cloning supported
- Yes
- Notes
- IPC cloning required for mileage preservation during replacement. Use Launch advanced programming tool or EEPROM programming tool for EEPROM read/write.
Steering Angle Sensor (SAS)
- Coding required
- Yes
- Notes
- INTEGRATED (cable reel 77900 family)
Connectivity & Accessories
HondaLink (Connected Services)
- Notes
- Remote functions via HondaLink app. Active subscription required.
Backup Camera
- Notes
- Standard all trims. HDS camera ID registration if replaced.
TPMS Sensors (SENSOR PER WHEEL - 315MHZ)
- Part number
- (SENSOR PER WHEEL - 315MHZ)
- Notes
- Direct TPMS. HDS sensor registration after replacement or position swap. Verify all 4 via HDS.
ARCHITECTURE & CONNECTIVITY
Architecture & Connectivity
- Body Construction
- Unibody - High-Strength Steel with Advanced High-Strength Steel reinforcement
- OBD Protocol
- ISO 15765-4 CAN (500 kbps)
- CAN Architecture
- HS-CAN (500 kbps) + MS-CAN (125 kbps); OBD2 DLC Pin 6/14 HS-CAN; DLC under driver dash
- Infotainment
- 7" Display Audio (LX/Sport/EX); 8" Navigation Display Audio (EX-L/Touring); Apple CarPlay + Android Auto on EX+
- OTA Capable
- No
- Infotainment Name
- Honda Display Audio
- ECU/TCM Unlocking
- Contact us
- ECU/TCM Flashing
- Confirmed
Reviewed coverage: 2021 - 2.0L TYPE R (K20C1), 2.2L i-CTDi (N22A2).
Confirm the exact engine, ECU, and any prerequisite access method before service.
OPENPILOT / COMMA.AI
Openpilot Compatibility
Not Supported
Officially supported (openpilot master)
- Package
- Honda Sensing
- Hardware
- Comma 3X + Honda Nidec / Bosch A / Bosch B harness
- Harness
- Honda Nidec / Bosch A / Bosch B Harness
2016-18 Nidec, 2019-21 Bosch A, 2022-24 Bosch B. Hatchback variants also supported.
FREQUENTLY ASKED QUESTIONS
FAQ
How much does ADAS calibration cost for a 2021 Honda Civic?
ADAS calibration pricing for a 2021 Honda Civic depends on which of its 3 documented systems need work after a repair. This vehicle is documented with Forward Camera (Monocular), Forward Radar (77GHz), and Honda Sensing Suite (EX+ trims). We provide a fixed quote after confirming the operations performed - send the VIN, the repair scope (windshield R&R, bumper work, alignment, collision), and any DTCs so the quote response can include a real number.
Can you reset the airbag light on a 2021 Honda Civic?
Yes. The 2021 Honda Civic uses a factory SRS control module that we support. We read and clear stored crash data, then restore the module to factory status so the airbag warning light goes out and the system returns to full operation. Reference part number on this vehicle: 77960-TBA-A030-M2-ENCRYPTED. Mobile diagnosis and programming are available in DFW, and mail-in module service is available nationwide. Send the part number and a description of what triggered the light, and we will provide a quote and scheduling window.
What is needed after replacing the windshield on a 2021 Honda Civic?
After windshield replacement on a 2021 Honda Civic, Forward Camera (Monocular) and Forward Radar (77GHz) rely on the forward-facing camera and require recalibration before the systems return to operation. We perform the calibration on-site in the DFW Metroplex with OE target fixtures. Mail-in module service is available nationwide for eligible module work.
How long does a 2021 Honda Civic module service take?
Most 2021 Honda Civic onsite jobs are typically scheduled within 24-48 hours once vehicle readiness, access, and route timing are confirmed. This vehicle has roughly 20 programmable modules documented in our database (4 ECU, 3 BCM, 1 TCU, 3 ABS, plus IPC/SAS/gateway/accessory). Mobile module work and ADAS calibration are scheduled in the DFW service area after quote review. Mail-in module service is available nationwide.
Do you cover the 2021 Honda Civic on-site, or is this mail-in only?
We run a mobile unit across the DFW Metroplex for on-vehicle work (ADAS calibration, post-repair recoding, and supported module work). Mail-in module service is available nationwide. Quote the work and we will confirm the active service path for the 2021 Honda Civic. Do not ship a module unless support confirms next steps.
What kind of warranty do you offer on 2021 Honda Civic programming?
Every programming, cloning, and calibration job on the 2021 Honda Civic is backed by a workmanship warranty covering the scope of work we performed: 1-year unlimited on all flashes, clones, and ADAS calibrations. If a module we programmed or a calibration we performed fails to function as expected, return it and we restore it at no charge. The warranty covers our work; it does not cover unrelated mechanical or electrical failure of the module itself.
Which modules on a 2021 Honda Civic can you actually service?
We program, clone, repair, or replace the full programmable-module stack on a 2021 Honda Civic. For this vehicle our database documents:
- 4 engine control (ECU/PCM)
- 1 transmission control (TCU/TCM)
- 3 body control (BCM and related)
- 3 ABS / brake control (EBCM)
- 4 immobilizer / security
- 3 key & fob
- 1 instrument cluster (IPC)
- 1 steering angle sensor (SAS)
- 3 ADAS module
Infotainment on this platform: Honda Display Audio. Send the VIN and the operations performed and we will confirm support and pricing.
Additional Module Part Numbers
Additional OEM-sourced part numbers for the 2021 Honda Civic covering ADAS, ECU/PCM, BCM, TCU/TCM, SRS, ABS/EBCM, instrument cluster (IPC), gateway, and steering angle sensor modules when available. These reference numbers assist technicians with module identification and sourcing prior to programming.
- ADAS Module Part Numbers
- 36160-TBG-A01, 36802-TGG-A11, (CAMERA 36160-TBG-A01, RADAR 36802-TGG-A11)
- ECU / PCM Part Numbers
- 37820-5AA-A78, 37820-5U5-A62
- BCM / Body Module Part Numbers
- 38800-TGG-A31, 72147-TGG-A11, ~35100-TGG-A01
- TCU / TCM Part Numbers
- 28100-5CG
- SRS / Airbag Module Part Numbers
- 77960-TBA-A030-M2-ENCRYPTED, 77960-TBA-X030-M2, 77960-TBA-X040-M2, 77960-TBF-A020-M2, 77960-TBJ-A020-M2, 77960-TGH-A020-M2, 7880-TGG-A815-M1
- ABS / EBCM Part Numbers
- 57110-TGH-315, 10TH GEN CIVIC FC
- Instrument Cluster (IPC) Part Numbers
- 78100-TBA-A11
- Transmission Control Module (TCM) Part Numbers
- 28100-5CG
- Steering Angle Sensor (SAS) Part Numbers
- INTEGRATED (CABLE REEL 77900 FAMILY)
Part numbers are OEM base references. Verify exact suffix via VIN-specific build data before ordering. Core Auto Logic provides mobile programming services for all listed modules in the DFW area.
Different trim or build?
Send your VIN and we'll confirm exact module support and pricing in the quote response.
Hit a security wall? We've got the keys.
1-year unlimited warranty on every flash and calibration.
Shared module fitment
Vehicles sharing modules with the 2021 Honda Civic
These vehicles use one or more of the same replacement modules indexed for this vehicle.
Finish the repair
Need help finishing this repair?
Get onsite help in Dallas-Fort Worth. Ask about same-day availability or a one-time remote session for eligible non-VSP work.
i-HDS Explore one-time factory coding and programming. We confirm the software and procedure for your vehicle. Module programming & recovery Replacing a module or dealing with a failed programming attempt? Send the part numbers and fault scan for review. Onsite tools & equipment Bring in a technician or ask about hourly, daily and weekly rentals where licensing and equipment availability allow.