OBD LensBMW: P0666
PCM/ECM/TCM Internal Temperature Sensor Circuit
- Reference namespace
- bmw
- 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: BMW.
10 profiles assigned this reference family
Changan: P0666
PCB temperature sensor fault (voltage too low / too high)
TCU. Датчик температуры печатной платы - слишком высокое или низкое напряжение.
- Reference namespace
- changan
- 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: Changan.
26 profiles assigned this reference family
- OBD-II / EOBDChangan
- Alsvin Gen.3 (2017-n.d.)Changan · 2017–onward
- CS35Changan
- CS35 PlusChangan
- CS35 Plus New (1.4T)Changan
- CS55 Plus (2017-) 1.5 + ATChangan · 2017–onward
- CS55 Plus (2017-) 1.5 + DCTChangan · 2017–onward
- CS55 Plus II (2021-)Changan · 2021–onward
- CS75Changan
- CS75 FL (1.8+AT)Changan
- CS75 FL (1.8+DCT)Changan
- CS75 Plus 1.5Changan
- CS75 Plus 2.0Changan
- CS95 (2.0+AT)Changan
- EADO Plus 2022- (1.4T)Changan · 2022–2022
- G318Changan
- S05Changan
- S07Changan
- UNI-K (1.5/2.0+AT)Changan
- UNI-K (1.5/2.0+DCT)Changan
- UNI-S (1.5+DCT)Changan
- UNI-T (1.5+DCT)Changan
- UNI-T (2.0+AT)Changan
- UNI-V (1.5+DCT)Changan
2 more related profiles are listed in the vehicle directory.
Generic OBD2: P0666
ECM/PCM/TCM internal temperature sensor - circuit malfunction
- Reference namespace
- obd2
- Source revision
- legacy-2.2.20
Generic OBD2 definition; confirm the protocol and vehicle-specific service information.
GAC / Lexus / Toyota: P0666
ECM/PCM/TCM Internal Temperature Sensor Circuit Malfunction
- 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