P1128 MITSUBISHI Possible Causes
- Check fuel compensation values
- Rich or lean air/fuel ratio
- Open or short circuit condition
- Faulty Manifold Absolute Pressure (MAP) sensor
- Faulty Engine Coolant Temperature (ECT) sensor
- Faulty Oxygen sensor
How to Fix MITSUBISHI Code P1128?
Start by checking the “Possible Causes” listed above. Visually inspect the corresponding wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.
Possible Symptoms
- Check Engine Light on (or Service Engine Soon warning light)
P1128 MITSUBISHI Meaning
Closed Loop Fueling Not Achieved Bank 1 is the generic description for Mitsubishi code P1128, but the manufacturer may have a different description for your vehicle model and year. Currently, we do not have further information about the Mitsubishi OBDII code P1128.