[Tannaton]

Can also be the temperature sensor on the CAT or DPF - these sometimes fail intermittently - puts the car into a not well documents restricted power mode with no message or lights but wont rev past around 3,000 rpm. In this case a code will be logged, but Volvo compatible gear will be needed, generic OBD's report it as a vague message (e.g. temperature sensor Bank A).