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For 1990-2009 cars only
Makes 🢒 Oldsmobile 🢒 2000 🢒 Intrigue 🢒 Engine 🢒 Engine Controls - 3.5L 🢒 DTC P0130 Circuit Closed Loop Performance Sensor 1

Refer to Engine Controls Schematics

Heated O2 Sensors


Object Number: 590136 Size: FS
Trans Solenoid, ABS, and O2 Sensor Fuses
Handling ESD Sensitive Parts Notice
Engine Controls Component Views
Powertrain Control Module Description
MAF, Secondary Air Injection Pump Bypass Solenoid, IAC and Secondary AIR Pump
A/C Pressure Switch, TPS, MAP, ECT and IAT
OBD II Symbol Description Notice
 .

Circuit Description

The PCM supplies a bias voltage of about 450 mV between the HO2S signal circuit and the HO2S low circuit. When measured with a 10 megohm digital voltmeter, this may display as low as 350 mV. The oxygen sensor signal varies from about 800 mV when the exhaust is rich, to about 50 mV when the exhaust is lean. If the HO2S 1 voltage remains at or near the 450 mV bias for an extended period of time, DTC P0134 is set.

If the signal frequency of HO2S bank 1 sensor 1 indicates that the sensor is active and the system is operating in closed loop, but the voltage, or amplitude, of the signal remains within a calibrated range, DTC P0130 will set.

Conditions for Running the DTC
    • There are no active DTCs of any of the following types present:
      • Fuel trim
      • Fuel injector circuit
      • Misfire
      • Evaporative emissions system (EVAP)
      • Exhaust gas recirculation (EGR)
      • Throttle position (TP)
      • Intake air temperature (IAT)
      • Manifold absolute pressure ( MAP)
      • Engine coolant temperature (ECT)
      • Crankshaft position (CKP)
      • Mass air flow (MAF)
    • The engine running for at least 3.3 minutes.

Conditions for Setting the DTC

The PCM detects an active sensor with an improper HO2S voltage amplitude.

Action Taken When the DTC Sets
    • The PCM illuminates the malfunction indicator lamp (MIL) on the second consecutive ignition cycle that the diagnostic runs and fails.
    • The PCM records the operating conditions at the time the diagnostic fails. The first time the diagnostic fails, the PCM stores this information in the Failure Records. If the diagnostic reports a failure on the second consecutive ignition cycle, the PCM records the operating conditions at the time of the failure. The PCM writes the conditions to the Freeze Frame and updates the Failure Records.

Conditions for Clearing the MIL/DTC
    • The PCM turns the MIL OFF after 3 consecutive drive trips during which the diagnostic runs and passes.
    • A last test failed, or the current DTC, clears when the diagnostic runs and passes.
    • A History DTC clears after 40 consecutive warm-up cycles, if no other emission related diagnostic failures are reported.
    • Use a scan tool in order to clear the MIL diagnostic trouble code.
    • Interrupting the PCM battery voltage may or may not clear DTCs. This practice is not recommended. Refer to Powertrain Control Module Description , Clearing Diagnostic Trouble Codes.

Diagnostic Aids

Notice: Use the connector test adapter kit J 35616-A for any test that requires probing the following items:

   • The PCM harness connectors
   • The electrical center fuse/relay cavities
   • The component terminals
   • The component harness connector
Using this kit will prevent damage caused by the improper probing of connector terminals.

Check for a malfunctioning HO2S heater or heater circuit. With the ignition ON and the engine OFF, the HO2S voltage displayed on the scan tool should gradually drop below 250 mV or rise above 600 mV. If this does not occur, disconnect the HO2S and connect a test lamp between the HO2S ignition feed circuit and the heater ground circuit. If the test lamp does not light, repair the open ignition feed or sensor ground circuit as necessary. If the test lamp lights and the HO2S signal circuit and the HO2S low circuit are OK, replace the HO2S. Refer to Heated Oxygen Sensor Replacement .

Review the Failure Records vehicle mileage since the diagnostic test last failed to determine how often the condition occurs that caused the DTC to set . This may assist in diagnosing the condition.

If the problem is intermittent, refer to Intermittent Conditions .

Test Description

The number(s) below refer to the step number(s) on the diagnostic table.

  1. This step checks for proper sensor activity. HO2S voltage should rapidly swing above and below the range specified.

    2.

  2. This step checks the PCM and the High and Low circuits between the PCM and the HO2S connector for proper operation.

    3.

  3. This step checks for proper HO2S heater circuit operation up to the HO2S connector.

    4.

  4. This step checks for proper circuit resistance between the HO2S Low circuit and PCM ground.

    5.

  5. This step checks for proper circuit resistance between the HO2S Low circuit and PCM ground with a COLD sensor. A loose HO2S or poor thread to exhaust electrical contact will cause higher resistance when the HO2S is cold. Although 500 ohms is allowed, typical resistance should be less than 50 ohms.

Step

Action

Value(s)

Yes

No

1

Did you perform the Powertrain On-Board Diagnostic (OBD) System Check?

--

Go to Step 2

Go to Powertrain On Board Diagnostic (OBD) System Check

2
  1. Clear DTCs using a scan tool.
  2. Reset the Fuel Trim values.
  3. Start and idle the engine until normal operating temperature is reached.
  4. Using a scan tool monitor the HO2S voltage for the sensor that applies to this DTC.

Is the HO2S voltage fixed within the voltage range specified?

300-600 mV

Go to Step 4

Go to Step 3

3

The condition that set this DTC is not present. This DTC may have been set by one of the following conditions:

    • HO2S connector water intrusion
    • An intermittently open HO2S High signal circuit
    • An intermittently open HO2S Low circuit
    • An HO2S Low circuit with high resistance to ground
    • PCM ground circuits with high resistance to ground
    • An in-operative HO2S heater
    • Poor HO2S or PCM connector terminal contact
    • An exhaust system leak (typically within 12 inches up-stream of the HO2S)
    • A defective HO2S

Repair any of the above conditions as necessary.

Was a condition found and repaired?

--

Go to Step 17

Go to Dignostic Aids.

4
  1. Turn the ignition Off.
  2. Disconnect the HO2S connector for the sensor that applies to this DTC.
  3. Jumper the HO2S Low circuit to a known good ground.
  4. Jumper the HO2S High signal circuit to a known good ground.
  5. Turn the ignition On leaving the engine Off.
  6. Using a scan tool monitor the HO2S voltage for the sensor that applies to this DTC.

Is the HO2S voltage less than the value specified?

20 mV

Go to Step 7

Go to Step 5

5
  1. Turn the ignition Off.
  2. Remove the jumpers from the HO2S terminals.
  3. Disconnect the PCM connector containing the HO2S High and Low circuits.
  4. Using the DMM J 39200 measure the continuity of the HO2S High signal circuit and then the HO2S Low circuit between the PCM connector terminal and the HO2S connector terminal (engine harness side).

Is the individual resistance of both circuits less than the value specified?

5 ohms

Go to Step 6

Go to Step 9

6
  1. Check for proper PCM connector terminal contact.
  2. Repair PCM terminals as necessary.

Was a PCM terminal repair made?

--

Go to Step 17

Go to Step 16

7
  1. Remove the jumpers from the HO2S terminals.
  2. Connect a test lamp between the HO2S Heater ignition feed and heater ground circuit terminals (engine harness side).

    3. Ensure the ignition is On while the engine is Off.

Is the test lamp illuminated?

--

Go to Step 8

Go to Step 10

8
  1. Turn the ignition Off.
  2. Reconnect the HO2S connector.
  3. Disconnect the PCM connector containing the HO2S Low circuit and the PCM connector containing the PCM ground circuits.
  4. Using the DMM J 39200 measure the resistance between the HO2S Low circuit terminal and one of the PCM ground circuit terminals.

Is the resistance measured less than the value specified?

500 ohms

Go to Step 12

Go to Step 11

9

Repair the circuit that measured high resistance.

Is the action complete?

--

Go to Step 17

--

10

Repair the HO2S Heater ignition or ground circuit. Probable causes include the following:

    • An open circuit
    • A high circuit resistance
    • A faulty ground connection
    • A blown heater fuse (other DTCs should set)

Is the action complete?

--

Go to Step 17

--

11

Repair the high resistance between the HO2S Low circuit and the PCM ground circuit. Probable causes include the following:

    • Faulty HO2S connector terminal contact
    • An open sensor harness low circuit (requires HO2S replacement)
    • A sensor harness low circuit with high resistance (requires HO2S replacement)
    • A faulty PCM ground connection
    • High PCM ground circuit resistance
    • An ungrounded exhaust system

Is the action complete?

--

Go to Step 17

--

12
  1. Check for exhaust system leaks upstream of the suspect HO2S.

    2. The leak may be very small and will typically be within 12 inches of the suspect HO2S.

  2. Repair exhaust as necessary.

Was an exhaust system repair made?

--

Go to Step 17

Go to Step 13

13
  1. Allow engine to cool to ambient temperature.
  2. Using the DMM J 39200 , re-measure the resistance between the HO2S Low circuit terminal and a PCM ground circuit terminal.

Is the resistance less than the value specified?

500 ohms

Go to Step 15

Go to Step 14

14
  1. Remove the HO2S from the exhaust.
  2. Clean the HO2S mounting threads.
  3. Apply anti-seize compound 5613695 or equivalent to the sensor threads.
  4. Tighten the HO2S to the proper torque. Refer to Heated Oxygen Sensor Replacement .
  5. Using the DMM J 39200 , re-measure the resistance between the HO2S Low circuit terminal and a PCM ground circuit terminal.

Is the resistance less than the value specified?

500 ohms

Go to Step 17

Go to Step 15

15

Replace the HO2S sensor. Refer to Heated Oxygen Sensor Replacement .

Is the action complete?

--

Go to Step 17

--

16

Replace the PCM. Refer to Powertrain Control Module Replacement/Programming .

Is the action complete?

--

Go to Step 17

--

17
  1. Clear DTCs with the scan tool.
  2. Turn the key to Off and wait 15 seconds.
  3. Operate the vehicle within the conditions that are required for this diagnostic to run. Refer to Conditions for Running the DTC.

Does the scan tool indicate that this test ran and passed?

--

Go to Step 18

Go to Step 2

18

Review Captured Info using the scan tool.

Are there any DTCs that have not been diagnosed?

--

Go to the applicable DTC table

System OK