P1428: EGI Mini - MAF Failed Open Circuit
HighPowertrainAir Flow Sensors
What does P1428 mean?
P1428 is a diagnostic trouble code indicating "EGI Mini - MAF Failed Open Circuit". This means there is an electrical break in the air flow sensors wiring — a connector may be unplugged, a wire broken, or a component has failed internally. The ECU detected no signal where it expected one.
Common causes
- Damaged or corroded wiring harness
- Loose or disconnected electrical connector
- Failed air flow sensors sensor or actuator
- Blown fuse in the related circuit
- Poor ground connection
What should you do?
This is a significant issue that should be diagnosed and repaired soon. Avoid long trips or heavy driving until the problem is resolved. Continued driving may cause additional damage.
Get a diagnosis for YOUR car
Code P1428 can mean different things depending on your vehicle. TorqueBot gives you a diagnosis specific to your make, model, and year.