A fault code doesn’t yet mean the unit or sensor itself is faulty: often it’s the plug and connector leading to it.
Possible causes
- Low coolant
- The radiator fan doesn’t work
- The thermostat doesn’t open
- Water pump, clogged radiator
What you can do yourself
- Pull over and stop the engine. Don’t open the coolant reservoir cap on a hot engine.
- When it cools down, check the coolant and the fan (“Assistant” tab).
On Oleg’s website:Injector cleaning ↗Car wiring repair ↗
The explanation comes from the error code reference in the AvtoElektrik PRO app.