SpareRadar OBD-II Code Lookup

P1128

Set by the manufacturer, so it means different things on different makes. 23 makes in the table below.

More codes than this one? Paste your whole scan
What P1128 means, by make 23 makes
  • Acura MAP Lower Than Expected
  • Audi Long Term Fuel Trim mult.,Bank1 System too Lean
  • Chrysler Closed Loop Fueling Not Achieved - Bank 1
  • Citroen Upstream Heated O2 Sensors Swapped
  • Dodge Closed Loop Fueling Not Achieved - Bank 1
  • 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
  • Jeep Closed Loop Fueling Not Achieved - Bank 1
  • 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-Benz Upstream H02S Sensors Swapped
  • Mercury Upstream Heated Oxygen Sensor Signals Reversed
  • Nissan Throttle Control Motor
  • Peugeot Upstream Heated O2 Sensors Swapped
  • Porsche Oxygen Sensing
  • Saab Multiplicative Adaptation, Bank 1 Max. Value
  • Toyota Throttle Control Motor Lock Malfunction
  • Volkswagen Long Term Fuel Trim mult.,Bank1 System too Lean
  • Volvo Long Term Fuel Trim mult.,Bank1 System too Lean

Each line is that manufacturer's own meaning for P1128. They are genuinely different faults, not rewordings of one, so a meaning listed against one make says nothing about the others. If your make is not listed, we do not hold it - your manufacturer's service information is the authority.

Code structure P1128
P
Powertrain
engine, transmission and emissions
1
Manufacturer-specific
Defined by the vehicle manufacturer, so the meaning varies between makes.
1
2
8
Fault index
identifies the specific fault
Powertrain Manufacturer-specific
Nearby codes in the P1 range
P1123 manufacturer-specific, 19 makes P1124 manufacturer-specific, 17 makes P1125 manufacturer-specific, 19 makes P1127 manufacturer-specific, 18 makes P1129 manufacturer-specific, 19 makes P112F manufacturer-specific, 1 make P1130 manufacturer-specific, 25 makes P1131 manufacturer-specific, 20 makes

Manufacturer code meanings from kierandrewett/obd (b56a07a), used under the MIT licence. Copyright (c) Kieran Drewett. SpareRadar is not affiliated with the dataset's authors.