OBD LensBMW: P0684
Glow Plug Control Module to PCM Communication Circuit Range/Performance
- 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
Dodge / Fiat: P0684
glow plug feedback or open circuit of the command,
- Reference namespace
- fiat
- 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: Fiat, Dodge.
27 profiles assigned this reference family
- 500Fiat
- 500 1.2 Fire 8V (CAN)Fiat
- 500 1.3 MultiJet 16V (CAN)Fiat
- 500 1.4 MultiAir 16V (CAN)Fiat
- 500 1.4 T-Jet 16V (CAN)Fiat
- 500e (2013 - 2019)Fiat · 2013–2019
- 500e (2020-) BEV ElectricFiat · 2020–onward
- 500XFiat
- Bravo 1.4 T-Jet 16V (CAN)Fiat
- Bravo 1.4 T-Jet 16V (KWP)Fiat
- Dart / ViaggioDodge
- Doblo 1.3 MultiJet 16V (CAN)Fiat
- Doblo 1.4 8v KWPFiat
- Freemont DieselFiat
- Multijet 2.0 Diesel + ZF 9HP48Fiat
- Punto 1.2 8V (CAN)Fiat
- Punto 1.3 MultiJet 16V (CAN)Fiat
- Punto 1.4 Fire 8V (CAN)Fiat
- Punto 1.4 MultiAir 16V (CAN)Fiat
- Punto 1.4 T-Jet 16V (CAN)Fiat
- Punto 1.4 T-Jet 16V (KWP)Fiat
- Qubo 1.2 Fire 8V (CAN)Fiat
- Qubo 1.3 MultiJet 16V (CAN)Fiat
- Tipo / Egea 1.6 MultijetFiat
3 more related profiles are listed in the vehicle directory.
Generic OBD2: P0684
Glow plug control module to ECM/PCM communication error - range/performance problem
- Reference namespace
- obd2
- Source revision
- legacy-2.2.20
Generic OBD2 definition; confirm the protocol and vehicle-specific service information.
GAC / Lexus / Toyota: P0684
Glow Plug Control Module/ECM/PCM Communication Range / Performance
- 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