2008 JHM stage 1 supercharged S5
I’ve got some codes that I’m trying to troubleshoot:
004200 - Intake Air Switch-Over Valve (N335)
P1068 - 004 - Open Circuit
Freeze Frame:
Fault Status: 01100100
Fault Priority: 2
Fault Frequency: 2
Reset counter: 255
Mileage: 169520 km
Time Indication: 0
Freeze Frame:
RPM: 396 /min
Load: 100.0 %
Speed: 0.0 km/h
Temperature: 41.0°C
Temperature: 26.0°C
Absolute Pres.: 980.0 mbar
Voltage: 10.287 V
008569 - Bank 2; System Too Lean off Idle
P2179 - 001 - - MIL ON
Freeze Frame:
Fault Status: 11100001
Fault Priority: 2
Fault Frequency: 17
Reset counter: 255
Mileage: 169527 km
Time Indication: 0
Date: 2007.07.29
Time: 17:51:33
Freeze Frame:
RPM: 2026 /min
Load: 7.1 %
Speed: 81.0 km/h
Temperature: 90.0°C
Temperature: 23.0°C
Absolute Pres.: 980.0 mbar
Voltage: 13.970 V
008567 - Bank 1; System Too Lean off Idle
P2177 - 001 - - MIL ON
Freeze Frame:
Fault Status: 11100001
Fault Priority: 2
Fault Frequency: 15
Reset counter: 255
Mileage: 169527 km
Time Indication: 0
Date: 2007.07.29
Time: 17:51:36
Freeze Frame:
RPM: 1991 /min
Load: 9.0 %
Speed: 79.0 km/h
Temperature: 90.0°C
Temperature: 23.0°C
Absolute Pres.: 980.0 mbar
Voltage: 13.335 V
000257 - Mass Air Flow Sensor (G70)
P0101 - 004 - Implausible Signal - Intermittent
Freeze Frame:
Fault Status: 00100100
Fault Priority: 2
Fault Frequency: 2
Reset counter: 255
Mileage: 169793 km
Time Indication: 0
Date: 2018.12.25
Time: 23:58:10
Freeze Frame:
RPM: 2239 /min
Load: 7.8 %
Speed: 61.0 km/h
Temperature: 91.0°C
Temperature: 3.0°C
Absolute Pres.: 1000.0 mbar
Voltage: 14.097 V
I’m thinking the MAF is the culprit for the lean bank conditions as the idle LTFT is normal and the off idle trim LTFT has been pegged at 20+%. I cleared the codes to reset the fuel trims to see if it happens again. LTFT at idle is -1.7 in bank 1, -1.9 in bank 2, LTFT off idle is 16.8 in bank 1, 19.1 in bank 2. So I logged air mass in 2nd gear, full throttle. The max value is 360+ g/s.
Can anyone with a JHM stage 1 supercharger kit let me know what you see for mass air flow?
Is the Intake Air Switch-Over Valve known to go out in these cars?
Thanks,
Cass