O2, Cam and crankshaft faults....

[Mattevans101]

Good evening,

i wondered if i could ask for some advice and help. i have a 2009vito 115.

THe MPG is down, along with a rough idle. The injectors have all been replaced (due to black death, with Bosch injectors and coded appropriately)

The codes i have which return when cleared are

P0135 o2 Sensor heater circuit
P2243 o2 Sensor reference voltage circuit open
P0336 Crankshaft sensor circuit A range performance
P0341 Camshaft Position sensor circuit range performance

This has had a new O2 sensor about 12 months ago, along with a new crankshaft sensor.....

do i need to look at replacing again? wiring? any other areas to look please.

 

[LostKiwi]

I'd be getting the camshaft timing checked. That engine is known for chain stretch and sprocket wear.