Skoda Rapid 1.4TSI CZCA - błąd P2177, zubożona mieszanka na biegu jałowym

Witam,
Skoda Rapid 1.4TSI na pasku kod silnika. Sporadycznie raz na ok 1tyś km pojawia się błąd P2177 (system Too Lean Off Idle Bank 1 - zubożona dawka paliwa na biegu jałowym)
Auto jeździ poprawnie.
W czym może być problem?

powracam z tematem, usterka pojawia się tylko na paliwie 95.
Log z VCDS


4 Faults Found:
17132 - Oxygen (Lambda) Sensor B1 S1
P0133 00 [01100000] - Response too Slow
Intermittent - Not Confirmed - Tested Since Memory Clear

2821 - Bank 1; System Too Lean off Idle
P2177 00 [11101101] - -
MIL ON - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Priority: 2
Fault Frequency: 2
Mileage: 335197 km
Date: 2025.04.24
Time: 06:42:40

Engine RPM: 1941.00 /min
Normed load value: 33.3 %
Vehicle speed: 57 km/h
Coolant temperature: 95 °C
Intake air temperature: 17 °C
Ambient air pressure: 1010 mbar
Voltage terminal 30: 14.512 V
Unlearning counter according OBD: 40
Long-term fuel trim bank 1 at idle: 0.61 %
Oxygen control: adaptation value at partial load: bank 1: 1.25000
Short term adaptation of mixture formation bank 1: -2.3 %
Outside temperature: 12 °C
Oxygen sensor test: bank 1: delta lambda: -0.00232
Fuel level: 9.00 l

17138 - Oxygen (Lambda) Sensor B1 S2; Heating Circuit
P0141 00 [01100101] - Malfunction
Not Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Priority: 2
Fault Frequency: 4
Mileage: 334960 km
Date: 2025.04.19
Time: 12:44:29

Engine RPM: 2183.50 /min
Normed load value: 46.7 %
Vehicle speed: 81 km/h
Coolant temperature: 96 °C
Intake air temperature: 29 °C
Ambient air pressure: 980 mbar
Voltage terminal 30: 13.853 V
Unlearning counter according OBD: 40
Exh mss flw bef main cat conv bank 1 filtered: 83.8 kg/h
Exhaust gas temperature before catalytic converter: 589.00 °C
Heated oxygen sensor bank 1: sensor 2: resistance-R uw q2 UWORD Chann 120: 1024.000 Ohm
Heated oxygen sensor bank 1: sensor 2: resistance-Test_Program_Bitregister: 1
Oxygen sensor test: bank 1: delta lambda: -0.00183
Short term adaptation of mixture formation bank 1: 0.0 %
O2 sensor 2: B1: internal resistance limit: 796 Ohm

17136 - Post-Catalyst Oxygen (Lambda) Sensor Correction; Bank 1
P2096 00 [11101101] - Too Lean
MIL ON - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Priority: 2
Fault Frequency: 1
Mileage: 335327 km
Date: 2025.05.02
Time: 11:43:36

Engine RPM: 2319.50 /min
Normed load value: 32.9 %
Vehicle speed: 104 km/h
Coolant temperature: 96 °C
Intake air temperature: 34 °C
Ambient air pressure: 1000 mbar
Voltage terminal 30: 14.536 V
Unlearning counter according OBD: 40
Oxygen control: adaptation value at partial load: bank 1: 1.25000
Long-term fuel trim bank 1 at idle: 1.17 %
Oxygen_sensor_bank_1_sensor_1_cell_resistance_adapted_value: -16.8
Oxygen sensor test: bank 1: delta lambda: -0.00247
Ox_sensor_bank_1_sensor_1_char_line_adapted_value_lean_range: 1.27
Ox_sensor_bank_1_sensor_1_char_line_adapted_value_rich_range: 0.84

Readiness: 0000 0001