GOT THE P0172 HERE WHAT IT LOOKS LIKE :
Year: 2000
> Manufacturer: American Isuzu Motors Inc.
> Make: Isuzu
> Model: Rodeo
> Engine Type: V6, 3.2L; DOHC
> Tranmission: Automatic
> Trim Level: LS; S; LSE
> License Plate: BFP043
> Mileage: 80000
>
>
>
> === Stored Error Code(s) ===
> Error Code: P0172
> Possible Causes:
>
> Error Code: P0171
> Possible Causes:
>
>
>
> Freeze Frame Information:
> 1. DTC for which Freeze Frame was Stored - P0172.
> 2. Fuel System 1 Status - Closed Loop.
> 3. Fuel System 2 Status - Closed Loop.
> 4. Calculated LOAD Value - 6.67 %.
> 5. Engine Coolant Temp - 161.60 °F.
> 6. Short Term Fuel Trim - Bank 1 - 10.16 %.
> 7. Long Term Fuel Trim - Bank 1 - 22.66 %.
> 8. Short Term Fuel Trim - Bank 2 - 9.38 %.
> 9. Long Term Fuel Trim - Bank 2 - 17.97 %.
> 10. Intake Manifold Absolute Pressure - 12.14 Inhg.
> 11. Engine RPM - 1,559.00 Rpm.
> 12. Vehicle Speed Sensor - 9.32 Mph.
> 13. Air Flow Rate Mass Air Flow Sensor - 0.00 Lb/Min.
> 14. Absolute Throttle Position - 0.00 %.
>
>
> Monitor Information:
>
> 1. MIL - ON.
> 2. Misfire Monitoring - Complete.
> 3. Fuel System Monitoring - Complete.
> 4. Comprehensive Component Monitoring - Complete.
> 5. Catalyst Monitoring - Not Complete.
> 6. Heated Catalyst Monitoring - Not Supported.
> 7. Evaporative System Monitoring - Complete.
> 8. Secondary Air System Monitoring - Not Supported.
> 9. A/C System Refrigerant Monitoring - Not Supported.
> 10. Oxygen Sensor Monitoring - Complete.
> 11. Oxygen Sensor Heater Monitoring - Complete.
> 12. EGR System Monitoring - Complete.
>
>
ANY IDEA WHAT IT COULD BE I JUST REPLACED THE 2 CAT CONVERTERS AND 4 NEW O2 SENSORS ABOUT 3 MONTHS AGO THE CEL CAME ON YESTERDAY THANKS

P0171 System too lean (Bank # 1)

P0172 System too rich (Bank # 1)

Areas of concern:

Fuel Pressure Regulator, MAF sensor, Fuel pressure & volume, faulty fuel injectors.

The MAF sensor showing 0 readings when the vehicle is at 1500 + rpm makes me concerned.

How does the vehicle run, rough, smooth, hesitations, stalling, etc.?

There's a few areas to start with anyway.

Let me know how that goes.

well it was the intake gasket again(third or fourth time) and the p0171 is a laek in the exaust that i have to find in order to fix it.