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HOMESERVICE MANUALSOLDSMOBILE2004BRAVADA AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 274 (ENGINE CONTROLS SELF-DIAGNOSTICS - 2.2L)DIAGNOSTIC TESTSDTC P0130: HO2S CIRCUIT (SENSOR 1)DIAGNOSTIC PROCEDURES
2004 Oldsmobile Bravada AWD

Diagnostic Procedures

2004 Oldsmobile Bravada AWDSECTION Diagnostic Procedures
WARNING: This page is about a different car, the 2003 GMC Sonoma and 2003 Chevrolet S10 Pickup. However, it is still accessible from the selected car via links, so may be relevant.
  1. Perform diagnostic system check - engine controls. See DIAGNOSTIC SYSTEM CHECK - ENGINE CONTROLS  under SELF-DIAGNOSTIC SYSTEM. After performing diagnostic system check, go to next step.
  2. Start engine. Allow engine to reach operating temperature. Operate engine at 1500 RPM for 30 seconds. Observe the O2S 1 voltage parameter with a scan tool. Is the O2S 1 voltage parameter varying at less than 400 mV to greater than 500 mV? If yes, go to next step. If no, go to step  4 .
  3. Observe the Freeze Frame/Failure Records for this DTC. Turn ignition off for 30 seconds. Start engine. Operate vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records. Did the DTC fail this ignition? If yes, go to next step. If no, problem is intermittent. See INTERMITTENTS in TROUBLE SHOOTING - NO CODES - 2.2L SONOMA & S10 PICKUP article.
  4. Turn ignition off. Disconnect the O2S 1. Turn ignition on, with engine off. Observe the O2S 1 voltage parameter with a scan tool. Is the O2S 1 voltage parameter more than 800 mV? If yes, go to step  6 . If no, go to next step.
  5. Measure the voltage from the high signal circuit of the O2S 1 harness connector on the engine harness side to a good ground with a DVOM. Is voltage more than 0.2 volt? If yes, go to step  7 . If no, go to step  8 .
    6. NOTE: The sensor may be damaged if circuit is shorted to a voltage source.
  6. Test the O2S 1 high signal circuit for a short to voltage. Did you find and correct the condition? If yes, go to step  16 . If no, go to step  13 .
  7. Measure voltage from the low signal circuit of the O2S 1 harness connector on the engine harness side to a good ground with a DVOM. Is voltage greater than 2 volts? If yes, go to step  11 . If no, go to step  9 .
  8. Test the O2S 1 high signal circuit for an open. Did you find and correct the condition? If yes, go to step  16 . If no, go to step  13 .
  9. Connect a 3-amp fused jumper wire between the high signal circuit of the O2S 1 harness connector on the engine harness side and the low signal circuit of the O2S 1 harness connector on the engine harness side. Observe the O2S 1 voltage parameter with a scan tool. Is the O2S 1 voltage parameter less than 100 mV? If yes, go to step  12 . If no, go to next step.
  10. Test the O2S 1 low signal circuit for an open. Did you find and correct the condition? If yes, go to step  16 . If no, go to step  13 .
  11. Test the O2S 1 low signal circuit for a short to voltage. Did you find and correct the condition? If yes, go to step  16 . If no, go to step  13 .
  12. Test for an intermittent and for a poor connection at the O2S 1. Did you find and correct the condition? If yes, go to step  16 . If no, go to step  14 .
  13. Test for an intermittent and for a poor connection at the PCM. Did you find and correct the condition? If yes, go to step  16 . If no, go to step  15 .
  14. Replace O2S 1. After replacing sensor, go to step  16 .
  15. Replace PCM. See appropriate REMOVAL & INSTALLATION article. Perform PCM relearn procedure. See POWERTRAIN CONTROL MODULE  under PROGRAMMING. After replacing PCM, go to next step.
  16. Turn ignition on, with engine off. Using scan tool, clear DTCs. Turn ignition off for 30 seconds. Start engine. Operate vehicle within Conditions For Running this DTC. Does the DTC run and pass? If yes, go to next step. If no, go to step  2 .
  17. With a scan tool, observe the stored information, Capture Info. Does the scan tool display any DTCs that you have not diagnosed? If yes, see DIAGNOSTIC TROUBLE CODE DEFINITIONS  . If no, system is okay.
RENDER: 1.0x

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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.