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HOMESERVICE MANUALSBUICK2006RAINIER 4.2 S, AWDREPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMENGINE CONTROL SYSTEM - 4.2L - DTC P0013 TO P0134DTC P0132TEST DESCRIPTION
2006 Buick Rainier 4.2 S, AWD

Test Description

2006 Buick Rainier 4.2 S, AWDSECTION Test Description

The numbers below refer to the step numbers on the diagnostic table.

  1. 2:  When the system is operating correctly, the HO2S 1 voltage should toggle above and below the bias voltage. You may need to operate the vehicle within the Freeze Frame conditions and Conditions for Setting the DTC in order to duplicate the malfunction that was detected by the PCM.
  2. 4:  The specified value is what is measured on a correctly operating system.
DTC P0132

Step Action Values Yes No
Schematic Reference: Engine Controls Schematics
Connector End View Reference: Powertrain Control Module (PCM) Connector End Views or Engine Controls Connector End Views
1 Did you perform the Diagnostic System Check - Vehicle? - Go to Step 2  Go to Diagnostic System Check - Vehicle
2 
  1. Operate the engine at normal operating temperature.
  2. Operate the engine above 1,200 RPM for 2 minutes.
  3. Observe the Heated Oxygen Sensor (HO2S) 1 Voltage parameter with a scan tool.
Does the scan tool indicate that the HO2S voltage is more than the specified value?		 946 mV Go to Step 4  Go to Step 3 
3
  1. Observe the Freeze Frame/Failure Records for this DTC.
  2. Turn OFF the ignition for 30 seconds.
  3. Start the engine.
  4. Operate the 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?		 - Go to Step 4  Go to Intermittent Conditions
4 
  1. Turn OFF the ignition.
  2. Disconnect the HO2S 1 sensor.
  3. Turn ON the ignition, with the engine OFF.
  4. Measure the voltage of the HO2S 1 high signal circuit on the Powertrain Control Module (PCM) side with the DMM.
Does the voltage measure within the specified range?		 350-550 mV Go to Step 6  Go to Step 5 
5 Test the HO2S 1 high signal circuit for a short to voltage. Refer to Circuit Testing and Wiring Repairs .
Did you find and correct the condition?		 - Go to Step 11  Go to Step 8 
6 The HO2S 1 is detecting a rich condition or may be contaminated. Inspect for the following conditions:
Repair any of the above or similar engine conditions as necessary.
Did you find and correct the condition?		 - Go to Step 11  Go to Step 7 
7 Inspect for poor connections at the harness connector of the HO2S 1 sensor. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .
Did you find and correct the condition?		 - Go to Step 11  Go to Step 9 
8 Inspect for poor connections at the harness connector of the PCM. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .
Did you find and correct the condition?		 - Go to Step 11  Go to Step 10 
9
NOTE: Refer to Heated Oxygen Sensor (HO2S) Resistance Learn Reset Notice in Cautions and Notices.
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.