I own a 2005 nissan xtrail with a 2.5L engine (QR25DE). I have problems with my vehicle,
too much fuel consumption ( 3.8km/L ) My car has a 60Liter tank , my last fuel up gave me 229KM until the car fuel tank well completely dry; i had to refuel from a jerrycan as the engine went off somewhere far from the petrol station.
I have loss of power, the car can't go more than 120km/h; and when i get to 80km/L to car struggles to get to a higher speed.
I have problems with my catalyst as i hear rattling sounds coming out of the catalyst. I have the error code >> p0420 catalyst system efficiency below threshold
Please see below screenshots from torque pro app.
- Air fuel ratio
- Rich/lean test
- Vacuum reading
- 02 sensor Bank 1 Sensor 1 Graph
- 02 sensor Bank 1 Sensor 1 wide band voltage
What should i look for to fix the problem ?