2003 Pontiac Bonneville SLE 3.8L MIL Lamp on
This Pontiac has a fuel trim reading of -13 long term fuel trim. Fuel pressure is normal with no leakdown and no leaking regulator. Fuel injectors flow test equally. Have installed known good O2 sensor and mass airflow sensor from similar vehicle with no chang...
FIX posted 2/23/2016
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Vehicle Data2003 Pontiac Bonneville SLE
Trouble Codes
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Vehicle Data
2003 Pontiac Bonneville SLE
VIN | 1G2HY54KX3 |
Engine | 3.8 L / 6 cyl / GAS |
Trans | 4-speed Automatic (Electronic) |
Delivery | Fuel Injection |
Emissions | OBD-II Compliant |
Symptoms | MIL Lamp On |
Occurs | Always |
Trouble Codes
P0172 | Fuel System Too Rich (Bank 1) |