17538/P1130 - Fuel Trim; Bank 2 (Mult): System too Lean
Possible Symptoms
Malfunction Indicator Light (MIL) active
Possible Causes
Mass Air Flow (MAF) Sensor faulty
Oxygen Sensor Control faulty
Oxygen Sensor(s) faulty
Fuel Injector(s) faulty
Possible Solutions
Check Mass Air Flow (MAF) Sensor
Check Oxygen Sensor Control
Check Oxygen Sensor(s)
Check Fuel Injector(s)
17536/P1128/004392 - Fuel Trim; Bank 1 (Mult): System too Lean
Possible Symptoms
Malfunction Indicator Light (MIL) active
Possible Causes
Mass Air Flow (MAF) Sensor faulty
Oxygen Sensor Control faulty
Oxygen Sensor(s) faulty
Fuel Injector(s) faulty
Possible Solutions
Check Mass Air Flow (MAF) Sensor
Check Oxygen Sensor Control
Check Oxygen Sensor(s)
Check Fuel Injector(s)
17545/P1137/004407 - Fuel Trim: Bank 1 (Add): System too Rich
Possible Symptoms
Malfunction Indicator Light (MIL) active
Possible Causes
Mass Air Flow (MAF) Sensor faulty
Fuel Pressure Regulator faulty
Fuel Injector(s) faulty
Oxygen Sensor Control faulty
Oxygen Sensor(s) faulty
Evaporative Emission (EVAP) System faulty
Possible Solutions
Check Mass Air Flow (MAF) Sensor
Check Fuel Pressure Regulator
Check Fuel Injector(s)
Check Oxygen Sensor Control
Check Oxygen Sensor(s)
Check Evaporative Emission (EVAP) System
17549/P1141/004417 - Load Calculation Cross Check: Implausible Value
Possible Causes
Mass Air Flow Sensor (G70) OR Manifold Pressure Sensor (G71) faulty
Vacuum Lines faulty
Possible Solutions
Check Mass Air Flow Sensor (G70) OR Manifold Pressure Sensor (G71)
Check Vacuum Lines
Check Engine Operating Conditions => Meas. Blocks
Special Notes
Uwe: I think this code is set when the airflow being measured (or otherwise calculated) by the ECU doesn't make sense given other operating parameters such as RPM and throttle opening, manifold pressure, etc.
17547/P1139/004409 - Fuel Trim: Bank 2 (Add): System too Rich
Possible Symptoms
Malfunction Indicator Light (MIL) active
Possible Causes
Mass Air Flow (MAF) Sensor faulty
Fuel Pressure Regulator faulty
Fuel Injector(s) faulty
Oxygen Sensor Control faulty
Oxygen Sensor(s) faulty
Evaporative Emission (EVAP) System faulty
Possible Solutions
Check Mass Air Flow (MAF) Sensor
Check Fuel Pressure Regulator
Check Fuel Injector(s)
Check Oxygen Sensor Control
Check Oxygen Sensor(s)
Check Evaporative Emission (EVAP) System
16486/P0102/000258 - Mass Air Flow Sensor (MAF/G70): Signal too Low
Possible Symptoms
Malfunction Indicator Light (MIL) ON
Loss of Power
Possible Causes
Wiring and/or Connector(s) from/to Mass Air Flow Sensor (MAF/G70) faulty
Mass Air Flow Sensor (MAF/G70) faulty
Possible Solutions
Check Wiring and/or Connector(s) from/to Mass Air Flow Sensor (MAF/G70)
Check/Replace Mass Air Flow Sensor (MAF/G70)
18265/P1857/006231 - Load Signal: Error Message from ECU
Possible Symptoms
Malfunction Indicator Light (MIL) active
Possible Causes
Fault Code(s) stored in Engine Control Unit (ECU)
Possible Solutions
Check Engine Control Unit for Fault Code(s)
All points towards mass air flow sensor. I would try to clean it out and then replace it if it doesn't resolve things, also check your vacuum lines for leaks/holes wherever you can on the engine.
__________________
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