2012 Chevrolet Impala LT 3.6L Check engine light
I have codes P0171 and P0174. 38% positive fuel trim at idle and around 25% positive cruising and WOT. I blocked off purge, blocked off pcv, smoke tested intake, inspected intake tube, used propane around intake with no change in fuel trim, smoke tested ex...
FIX posted 11/26/2024
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Message Closed w/FIX
Vehicle Data2012 Chevrolet Impala LT
Trouble Codes
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Message Closed w/FIX
Vehicle Data
2012 Chevrolet Impala LT
VIN | 2G1WB5E32C |
Engine | 3.6 L / 6 cyl / GAS |
Trans | 6-speed Automatic (Electronic) |
Delivery | Fuel Injection / Direct Injection |
Emissions | OBD-II Compliant |
Symptoms | Check Engine Light |
Occurs | Always, Under Load, Idle |
Trouble Codes
P0171 | Fuel System Too Lean (Bank 1) |
P0174 | Fuel System Too Lean (Bank 2) |