P1128
Upstream Heated Oxygen Sensor Signals Reversed.
- Mercury
- Powertrain
- Manufacturer code
How this code is built
- P
- SystemPowertrain
- 1
- Defined byThe manufacturer
- 1
- AreaFuel and air metering
- 28
- FaultThe specific fault in that area
Guide
Writing the guide for P1128. The first open of a code takes up to a minute.
This code for other makes
- P1128AcuraMAP Lower Than Expected
- P1128FordUpstream Heated Oxygen Sensor Signals Reversed
- P1128HondaMAP Lower Than Expected
- P1128InfinitiMAP Lower Than Expected
- P1128KiaLong Term Fuel Trim Multiplicative Air System High
- P1128LexusThrottle Control Motor Lock Malfunction
- P1128LincolnUpstream Heated Oxygen Sensor Signals Reversed
- P1128MazdaHO2S Bank 1 Sensor 1 Signals Swapped In Key On Engine Running Self Test
- P1128OtherUpstream Heated O2 Sensors Swapped
- P1128ToyotaThrottle Control Motor Lock
- P1128VolkswagenLong Term Fuel Trim Bank 1 System Too Lean