alanc

Hi my CRV drives absolutely fine ,that is until I put my caravan on the back, it's ok until I come to a hill then engine light comes on and goes into limp mode. I use my obd tool to turn off and reset, next hill light on again. Honda have looked at it and said can't find the fault,anyone got any ideas as I'm getting pretty fed up Codes it's throwing up DTC P1236 BOOST PRESSURE TOO HIGH SIGNAL DTCP00AF TURBORCHARGER BOOST CONTROL POSITION SENSOR IMPLAUSIBLE