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
- Ran out of fuel — the ECU stores this code in that case too
- Misfire in one of the cylinders
- An air leak or a dirty throttle body
What you can do yourself
- Check the fuel level first.
- See if there are misfire codes P0301–P0308 and compare the fuel trims on the “Sensors” tab.
Stop and don’t drive on if:
- The Check Engine light is flashing
- The temperature gauge is in the red or the overheating light is on
- The red oil pressure light is on
- Smoke from under the bonnet, a burning or petrol smell
- Strong jerking, knocking from the engine, or the car barely moves
Source: toyotaownersclub.com
The explanation comes from the error code reference in the AvtoElektrik PRO app.