lukewhite

hello i have recently bought st170 and engine light came on within month of having it got it checked and was lambda sensor bank one so changed that. Now engine light is back on sane fault code has come up any ideas what else could be causing this to happen ?

thanks luke

oldford

What's the number of the fault code? And the exact description?

lukewhite

the fault code is p1131 not sure on description didn't take notice sorry

oldford

P1131 - Lack Of HO2S11 Switches - Sensor Indicates Lean

This is probably NOT a failing Oxygen sensor, but a lack of fuel in the engine.
Could be an air leak or a faulty sensor.
It can also be caused by a low fuel pressure, maybe a blocked fuel filter?

lukewhite

ok thankyou will look into them