Can anybody help me understanding can polling? I use the following code in 3.0.12 and older version. i send every 60s when the car is on a following code: CAN_frame_t frame; memset(&frame,0,sizeof(frame)); frame.origin = m_can1; frame.FIR.U = 0; frame.FIR.B.DLC = 3; frame.FIR.B.FF = CAN_frame_std; frame.MsgID = 0x761; frame.data.u8[0] = 0x02; frame.data.u8[1] = 0x21; frame.data.u8[2] = 0x01; m_can1->Write(&frame); At IncomingFrameCan1 i catch the response message at 0x762 and send a flow control message (this values from can logging during genuine diagnostic use on car) if (d[0] == 16) { // Request CAC... CAN_frame_t frame; memset(&frame,0,sizeof(frame)); frame.origin = m_can1; frame.FIR.U = 0; frame.FIR.B.DLC = 3; frame.FIR.B.FF = CAN_frame_std; frame.MsgID = 0x761; frame.data.u8[0] = 0x30; frame.data.u8[1] = 0x08; frame.data.u8[2] = 0x0A; m_can1->Write(&frame); } And with this is get some data (CAC) But if i use polling with the following values static const OvmsVehicle::poll_pid_t vehicle_mitsubishi_polls[] = { { 0x761, 0x762, VEHICLE_POLL_TYPE_OBDIIGROUP, 0x02, { 0, 10, 10 } }, // cac { 0, 0, 0, 0, { 0, 0, 0 } } }; i get the following in void OvmsVehicleMitsubishi::IncomingPollReply.... I (178194) v-mitsubishi: 762 TYPE:21 PID:02 7 01 7e 01 7e 01 7f 01 00 I (178224) v-mitsubishi: 762 TYPE:21 PID:02 7 7e 01 7e 01 7e 01 7e 00 I (178284) v-mitsubishi: 762 TYPE:21 PID:02 7 01 7e 01 7e 01 7e 01 00 I (178284) v-mitsubishi: 762 TYPE:21 PID:02 7 7e 01 7e 01 7e 01 7e 00 I (178314) v-mitsubishi: 762 TYPE:21 PID:02 7 01 7e 01 7e 01 7e 01 00 I (178344) v-mitsubishi: 762 TYPE:21 PID:02 7 7e 01 7e 01 7e 01 7e 00 I (178374) v-mitsubishi: 762 TYPE:21 PID:02 7 01 7e 01 7e 01 7e 01 00 I (178404) v-mitsubishi: 762 TYPE:21 PID:02 7 7e 01 7e 01 7e 01 7e 00 I (178434) v-mitsubishi: 762 TYPE:21 PID:02 7 01 7e 01 7e 01 7e 01 00 I (178464) v-mitsubishi: 762 TYPE:21 PID:02 7 7e 01 7e 01 7e 01 7e 00 I (178494) v-mitsubishi: 762 TYPE:21 PID:02 7 01 7e 01 7e 00 00 00 00 i run a can logging with this session and i only see the same data (incomping poll reply) only the d[0] is changed. What do i do wrong?