after some hard driving i’ll receive a CEL for bank 2 sensor 1 stuck on rich… also will receive a bank 2 code for lambda lean. (weird how can one bank be rich and lean at the same time?)
every now and then i get codes for bank 2 sensor 2 (heater circuit) and bank 1 sensor 2 (heater circuit) i think thats because i gutted my down pipe pre cats and run spacers on the rear o2 sensors?
i did the cleaning to maybe see if it fixes the problem, no… i misfire at idle very little. with a misfire counter ill get misfires on cylinder 1,3,5,6,7 only at idle or under 2600 rpm. i did swap injectors bank 2 with bank 1 to see if the rich/lean codes travel but didn’t swap #5 and #3 as i couldn’t get them out without breaking the plastic tabs on them with the audi jerk off tool.
128k on the motor
fresh carbon clean 7 days ago.
plugs are new, coils are a year old.
always run shell 93 v power
ecu 2 codes:
4 Faults Found:
004416 - Oxygen (Lambda) Sensor; B2 S2
P1140 - 008 - Internal Resistance too High - Intermittent
Freeze Frame:
Fault Status: 00101000
Fault Priority: 0
Fault Frequency: 2
Reset counter: 255
Mileage: 205590 km
Time Indication: 0
Freeze Frame:
RPM: 4345 /min
Load: 35.3 %
Speed: 114.0 km/h
Temperature: 92.0∞C
Temperature: 17.0∞C
Absolute Pres.: 1010.0 mbar
Voltage: 12.954 V
008344 - Post-Catalyst Oxygen (Lambda) Sensor Correction; Bank 2
P2098 - 002 - Too Lean
Freeze Frame:
Fault Status: 01100010
Fault Priority: 0
Fault Frequency: 1
Reset counter: 255
Mileage: 205780 km
Time Indication: 0
Freeze Frame:
RPM: 2020 /min
Load: 26.3 %
Speed: 77.0 km/h
Temperature: 92.0∞C
Temperature: 15.0∞C
Absolute Pres.: 1010.0 mbar
Voltage: 13.462 V
008600 - Oxygen (Lambda) Sensor B2 S1
P2198 - 002 - Signal too High (Rich)
Freeze Frame:
Fault Status: 01100010
Fault Priority: 0
Fault Frequency: 1
Reset counter: 255
Mileage: 205780 km
Time Indication: 0
Freeze Frame:
RPM: 2009 /min
Load: 33.7 %
Speed: 77.0 km/h
Temperature: 92.0∞C
Temperature: 15.0∞C
Absolute Pres.: 1010.0 mbar
Voltage: 13.462 V
000345 - Oxygen (Lambda) Sensor B2 S2
P0159 - 001 - Response too Slow
Freeze Frame:
Fault Status: 01100001
Fault Priority: 0
Fault Frequency: 1
Reset counter: 255
Mileage: 205804 km
Time Indication: 0
Freeze Frame:
RPM: 2193 /min
Load: 28.6 %
Speed: 84.0 km/h
Temperature: 88.0∞C
Temperature: 10.0∞C
Absolute Pres.: 1010.0 mbar
Voltage: 13.335 V