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Definition of check engine code P1128:
Acura:
MAP Lower Than Expected
Chrysler/Dodge/Jeep:
Closed Loop Fueling Not Achieved - Bank 1
Citroen/Peugeot:
Upstream Heated O2 Sensors Swapped
Daewoo:
IDLE RATIO (P /LOAD) - LEAN
Ford:
Upstream Heated O2 Sensors Swapped
Honda:
Manifold Absolute Pressure (MAP) Sensor Circuit Lower Than Expected
Hyundai:
Long Term Fuel Trim Multiplier Too Lean
Jaguar:
Upstream oxygen sensors swapped from bank to bank
Lamborghini:
Long term fuel trim multiplicative air system high
Lexus:
Throttle Control Motor Lock Malfunction
Lincoln:
Upstream Heated Oxygen Sensor Signals Reversed
Mazda:
HO2S Bank 1 Sensor 1 Signals Swapped in Key On Engine Running Self Test
Mercedes:
Upstream H02S Sensors Swapped
Mercury:
Upstream Heated Oxygen Sensor Signals Reversed
Nissan:
Throttle Control Motor
Oldsmobile:
Upstream Heated Oxygen Sensor Signals Reversed
Porsche:
Oxygen Sensing
Saab:
Multiplicative Adaptation, Bank 1 Max. Value
Scion:
Throttle Control Motor Lock.
Toyota:
Throttle Control Motor Lock Malfunction
Volkswagen/Audi:
Long Term Fuel Trim mult.,Bank1 System too Lean
Volvo:
Long Term Fuel Trim mult.,Bank1 System too Lean
