Closed Loop Fueling Not Achieved Bank 1


Table of contents

P1128 MITSUBISHI Possible Causes

  • Check fuel trim values rich or lean air/fuel ratio
  • Open or short circuit condition
  • Manifold Absolute Pressure (MAP) Sensor faulty
  • Engine Coolant Temperature (ECT) sensor faulty
  • Faulty oxygen sensor

How do I fix code P1128 MITSUBISHI?

  Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.

Cost of diagnosing the P1128 MITSUBISHI code

  The cost of diagnosing the P1128 MITSUBISHI code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.

Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

P1128 MITSUBISHI Description

  Closed Loop Fueling Not Achieved Bank 1 is the generic description for the P1128 Mitsubishi code, but the manufacturer may have a different description for your model and year vehicle. Currently, we have no further information about the P1128 Mitsubishi OBDII code.Still have questions? Please post your question on our Comments Section below for more information.

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