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 MANUALSOLDSMOBILE2004BRAVADA RWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 52 (ENGINE CONTROL SYSTEM - SELF-DIAGNOSTICS - 4.2L)DIAGNOSTIC TESTSDTC P0140: HO2S CIRCUIT - INSUFFICIENT ACTIVITY - SENSOR 2CONDITIONS FOR RUNNING DTC
2004 Oldsmobile Bravada RWD
Conditions For Running DTC
2004 Oldsmobile Bravada RWDSECTION Conditions For Running DTC
WARNING: This page is about a different car, the 2002 Oldsmobile Bravada, 2002 GMC Envoy XL, 2002 GMC Envoy, and 2002 Chevrolet TrailBlazer. 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, P0201, P0202, P0203, P0204, P0205, P0206, P0300, P0336, P0440, P0446, P0452, P0453, P0507, P0601, P0602, P0604, P0606, P1120, P1220, P1221, P1271, P1275, P1280, P1484, P1512, P1514, P1515, P1516, P1621, P1635, P1639, P1680, or P1681 are not set.
- The fuel level sensor is more than 10 percent.
- The ignition 1 signal is more than 10 volts.
- The Engine Coolant Temperature (ECT) is more than 104°F (40°C).
- The loop status is closed.
- The Throttle Position (TP) indicated angle is between 15-50 percent.
- The Mass Air Flow (MAF) sensor is more than 10 g/s.
- The Accelerator Pedal Position (APP) indicated angle is more than 1.2 percent.
- The manifold absolute pressure (MAP) is more than 25 kPa.
- The above conditions have been met for 140 seconds.
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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.