GM: B1221
Audio [-] output #20 (TBD) circuit range/performance
- Reference namespace
- gm
- Source revision
- legacy-oem-dtc-r2-20260924
Reference family assigned by the production catalog. An entry in this family is not proof of a fault or ECU support on every listed vehicle.
Jaguar / Land Rover: B1221
Left seat heater output - open load
- Reference namespace
- jaguar-land-rover
- Source revision
- legacy-oem-dtc-r2-20260924
Reference family assigned by the production catalog. An entry in this family is not proof of a fault or ECU support on every listed vehicle.
Related catalog brands: Land Rover, Jaguar.
42 profiles assigned this reference family
- Defender 2007-2010 2.4LLand Rover · 2007–2010
- Defender Puma 2.2L DieselLand Rover
- Discovery 4 2.7L [EN]Land Rover
- Discovery 4 2.7L [RU]Land Rover
- Discovery 4 3.0L OBD-II + Extra / RangeRover 2009-2012 5.0LLand Rover · 2009–2012
- Discovery 5 3.0 Diesel (2021-n.d.)Land Rover · 2021–onward
- Discovery III 2.7L TD6 [EN]Land Rover
- Discovery III 2.7L TD6 [RU]Land Rover
- Discovery III 4.4 V8Land Rover
- Discovery Sport 2015-2016 2.2DLand Rover · 2015–2016
- Discovery Sport 2017-2020Land Rover · 2017–2020
- Evoque Gen.1 2012-2017 Diesel 2.0/2.2Land Rover · 2012–2017
- Evoque Gen.1 2012-2017 Gasoline 2.0Land Rover · 2012–2017
- F-Pace 2017 3.0 V6 DieselJaguar · 2017–2017
- F-Pace 3.0 Gasoline (Supercharged) (2016-2017)Jaguar · 2016–2017
- Freelander II 2.2L [EN]Land Rover
- Freelander II 2.2L [RU]Land Rover
- Freelander II 3.2LLand Rover
- F-Type 3.0 Superchared PS306 (2018-)Jaguar · 2018–onward
- Ingenium 2.0 Diesel (AJ200D, 204DTA, 204DTD)Jaguar
- Ingenium 2.0 Gasoline (AJ200P, PT204)Jaguar
- I-PaceJaguar
- OBD-II / EOBD + extra (CAN)Jaguar · 2002–2014
- PT306/AJ20P6 3.0LJaguar
18 more related profiles are listed in the vehicle directory.
GAC / Lexus / Toyota: B1221
Power Window Master Switch Circuit / 21
- Reference namespace
- toyota
- Source revision
- legacy-oem-dtc-r2-20260924
Reference family assigned by the production catalog. An entry in this family is not proof of a fault or ECU support on every listed vehicle.
Related catalog brands: GAC, Toyota, Lexus.
24 profiles assigned this reference family
- OBD-II / EOBDLexus
- 29 bit EV data profileToyota
- BZ3XGAC
- Camry Hybrid XV50, RAV4 Hybrid 2016-2018, Auris TS HybridToyota · 2016–2018
- Corolla E110, E120 1CD-FTVToyota
- Corolla Hybrid 2020-, RAV4 Hybrid 2019-, Camry Hybrid 2018-, Avalon Hybrid 2019-Toyota · 2018–onward
- Corolla Verso / Avensis gen.2 (2004-2007) DieselToyota · 2004–2007
- GT-86 (2012-2021)Toyota · 2012–2021
- Highlander Hybrid Gen.3Toyota
- JOBD JDM CANLexus
- OBD-II / EOBD ~1999-2008 K-Line/KWP + extra sensorsLexus · 1999–2008
- OBD-II / EOBD ~2006-2009 CAN + extra sensorsLexus · 2006–2009
- OBD-II / EOBD ~2010-2022 CAN + extra sensorsLexus · 2010–2022
- OBD-II / EOBD ~2016 - n.d. CAN + extra sensorsLexus · 2016–onward
- Prius Gen. 2 (2004-2009)Toyota · 2004–2009
- Prius Gen. IV (2015-)Toyota · 2015–onward
- Prius Gen.3 2010-Toyota · 2010–onward
- Prius PrimeToyota
- RAV4 Prime PHEV (2019-2025), Prius Prime (2023-n.d.) / Lexus NX450h+ PHEVLexus · 2019–onward
- Tacoma gen.3 (2016-n.d.)Toyota · 2016–onward
- Vitz 2009 CVTToyota · 2009–2009
- WWH-OBD EV (CAN 29 bit) (2026-n.d.)Toyota · 2026–onward
- WWH-OBD HEV/PHEV (CAN 29 bit) (2026-n.d.)Toyota · 2026–onward
- WWH-OBD ICE (CAN 29 bit) (2026-n.d.)Toyota · 2026–onward
What should I check before using this definition?
Keep the full code, module, status and freeze-frame data. Confirm the vehicle’s make, model, year and current manufacturer service information before choosing a repair. This entry does not identify a failed part by itself.
Organize a scan report or recordingOBD Lens production library legacy-owner-2026-10-09-v81. This is a scoped technical reference, not a scan of your car. A catalog relationship does not certify that every ECU, year or engine returns the same signal or code definition.
Read the reference method