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 MANUALSCHEVROLET2006CHEVY EXPRESS G2500, VAN CARGO, 6.6 2REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 53 (ENGINE CONTROLS SELF-DIAGNOSTICS - 2.2L)DIAGNOSTIC TESTSDTC P0140: HO2S CIRCUIT INSUFFICIENT ACTIVITY - SENSOR 2CONDITIONS FOR RUNNING DTC
2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2
Conditions For Running DTC
2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2SECTION Conditions For Running DTC
WARNING: This page is about a different car, the 2003 Pontiac Sunfire, 2003 Pontiac Grand Am, 2003 Oldsmobile Alero, and 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, P0128, P0141, P0201-P0204, P0300, P0301-P0304, P0336, P0440, P0442, P0446, P0452, P0453, P0506, P0507, P0601, P0602, P1441 or P1621 are not set.
- The ECT sensor parameter is more than 158°F (70°C).
- The Ignition 1 signal parameter is more than 10 volts.
- The Fuel Level sensor parameter is more than 10 percent.
- The Engine Run Time parameter is more than 30 seconds.
- The Air Flow Calculated parameter is more than 5.5 g/s for 70 seconds.
- The TP sensor parameter is 8-56 percent.
- The MAP Sensor parameter is more than 20 kPa.
- The Loop Status parameter is closed.
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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.