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2021 Ford F-350 Super Duty XL 7.3L Surge, MIL Lamp on
Posted to Ford Driveability on 11/13/2025 11 Replies

Hello, and thanks in advance for any insight you might be able to provide. This 2022 f350(not sure why the vin did not match) came in with p0171/p0174. Long term fuel trims at 29% on both banks. Short term fuel trims roughly 8% at idle, varying with drivin...

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  Related Documents & Media  2021 Ford F-350 Super Duty XL

 
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car Vehicle Data

2021 Ford F-350 Super Duty XL

VIN 1FDRF3HN1N
Engine7.3 L / 8 cyl / GAS
Trans6-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsSurge, MIL Lamp On
OccursAlways

Trouble Codes

P0171Fuel System Too Lean (Bank 1)
P0174Fuel System Too Lean (Bank 2)
Open Help Request

car Vehicle Data

2021 Ford F-350 Super Duty XL

VIN 1FDRF3HN1N
Engine7.3 L / 8 cyl / GAS
Trans6-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsSurge, MIL Lamp On
OccursAlways

Trouble Codes

P0171Fuel System Too Lean (Bank 1)
P0174Fuel System Too Lean (Bank 2)