Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2008CHEVY EXPRESS G2500, VAN CARGO, 6.6 6REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 108 (ENGINE CONTROLS SELF-DIAGNOSTICS - 2.2L BI-FUEL)DIAGNOSTIC TESTSDTC P0171: FUEL TRIM SYSTEM LEANCONDITIONS FOR RUNNING DTC
2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6
Conditions For Running DTC
2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6SECTION Conditions For Running DTC
WARNING: This page is about a different car, the 2003 Chevrolet Cavalier. However, it is still accessible from the selected car via links, so may be relevant.
- DTCs P0105, P0107, P0108, P0112, P0113, P0117, P0118, P0122, P0123, P0125, P0131, P0132, P0133, P0134, P0201-P0204, P0300, P0301-P0304, P0325, P0341, P0446, P0502, P0503, P0506, P0507, P0601, P0602, P1133 or P1441 are not set.
- The Engine Coolant Temperature (ECT) sensor parameter is greater than 140-239°F (60-115°C).
- The Intake Air Temperature (IAT) sensor parameter is -13 to 239°F (-25 to 115°C).
- The Manifold Absolute Pressure (MAP) sensor parameter is above 4 psi (28 kPa).
- The vehicle speed is less than 82 MPH (132 km/h).
- The engine speed is 550-3600 RPM.
- The Barometric Pressure (BARO) sensor parameter is more than 10.3 psi (72 kPa).
- The CNG fuel level is more than 9.8 percent.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.