Hello all

I have the above vehicle that when driven on a run the fault code of P0172 - Fuel Trim; Bank 1: System Too Rich appears

Freeze Frame Data for address 10
PID02 DTC that caused freeze frame data storage: P0172
PID03 Fuel system 1/2 status: Closed loop, using O2 sensors
PID04 Calculated load value: 4.3 %
PID05 Engine coolant temperature: 96 °C
PID06 Short Term Trim - Bank 1: -15.6 %
PID07 Long Term Trim - Bank 1: 5.5 %
PID12 Engine RPM: 807 /min
PID13 Vehicle speed: 0 km/h

Have looked at live data and have found that when the purge solenoid is is being controlled by the ECU the fuel trim Quickly goes approx 12% lean to correct a rich mixture then after about 30 sec the fuel trims go approx 12% rich to correct a lean mixture for several minutes

Is this usual for this model?
as i thought that the engine calibration would be pre programed to to compensate opening the purge solenoid



Red=STFT Green=LTFT Yellow=CTS

Thanks in advance
Terry