Error P05F2 on Jaecoo все модели
Reductant Pump Supply Voltage Circuit Stuck Off
Code
P05F2
Vehicle
Jaecoo все модели
Category
Powertrain
Severity
⚠️ MediumSymptoms
- AdBlue/SCR system fault warning
- Check Engine Light Is On
- AdBlue consumption has stopped (the tank does not empty)
- Increased NOx emissions
- Possible power limitation after 1000–2000 km
Causes
- Burnt or stuck pump power relay (open contacts)
- Open circuit in the relay control circuit
- Mechanical jamming of the pump (AdBlue freezing, clogging)
- AdBlue ECU malfunction
- Broken pump supply wire
How to Fix
- Try to turn on the pump manually using the diagnostic scanner (component activation)
- If the pump does not respond, check that there is power at its connector when the switch is commanded.
- Check the pump power relay - measure the resistance of the control winding (normal: 70–120 Ohms)
- Check the presence of a control signal on the relay from the ECU
- Check if AdBlue is frozen in the tank and pipes
- Replace the relay or repair an open circuit
FAQ
Может ли AdBlue замёрзнуть и вызвать P05F2?
Да, при температуре ниже -11°C реагент замерзает. Система предусматривает нагрев, но при его неисправности замёрзший AdBlue может заблокировать насос.
Как активировать насос AdBlue для диагностики?
Используйте диагностический сканер с функцией активации компонентов SCR. Это позволит проверить работоспособность насоса без поездки.