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DTC P0130

Diagnostic Instructions

    • Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
    • Review Strategy Based Diagnosis for an overview of the diagnostic approach.
    • Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptor

DTC P0130 00: HO2S Circuit Closed Loop Performance Sensor 1

Diagnostic Fault Information

Circuit

Short to Ground

Open/High Resistance

Short to Voltage

Signal Performance

Heater Voltage Supply

P0135 00

P0135 00, P2243 00

P0135 00

P0135 00

Reference Voltage (Signal)

P0131 02, P0131 03

P0131 02, P0131 03

P0132 01, P2231 07

P0130 00, P0133 00, P0134 00

Heater Low Control

-

P0135 00, P2243 00

P0135 00

P0135 00

Low Reference (Ground)

P0131 02, P0131 03

P0131 02, P0131 03

P0131 02, P0131 03

-

Typical Scan Tool Data

HO2S Bank 1 Sensor 1

HO2S Sensor Voltage Circuits

Normal Range

Short to Ground

Open

Short to Voltage

HO2S High Signal

0-1 000 mV

0-90 mV

350-550 mV

Approximately 1 100 mV

HO2S Low Signal

0-1 000 mV

0-1 000 mV

0-1 000 mV

0-1 100 mV

Circuit/System Description

The wide band heated oxygen sensor (HO2S) measures the amount of oxygen in the exhaust stream more quickly and accurately than the switching style HO2S. The wide band sensor consists of an oxygen sensing cell, an oxygen pumping cell, and a heater. The exhaust gas sample passes through a diffusion gap between the sensing cell and the pumping cell. The engine control module (ECM) supplies a signal voltage to the HO2S and uses this voltage as a reference to the amount of oxygen in the exhaust system. An electronic circuit within the ECM controls the pump current through the oxygen pumping cell in order to maintain a constant signal voltage. The ECM monitors the voltage variation on the signal circuit and attempts to keep the voltage constant by increasing or decreasing the amount of current flow or reversing the direction of the current flow to the pumping cell. By measuring the direction and amount of current required to maintain the signal voltage, the ECM can determine the concentration of oxygen in the exhaust. The signal voltage is displayed as a lambda value. A lambda value of 1 is equal to a stoichiometric air fuel ratio of 60:1. Under normal operating conditions, the lambda value will remain around 1. When the system is lean, the oxygen level will be high and the lambda value will be high, or more than 1. When the system is rich, the oxygen level is low and the lambda value will be low, or less than 1. The ECM uses this information to maintain the proper air/fuel ratio.

Conditions for Running the DTC

    • The system voltage is between 10-18 V.
    • The scan tool special functions are not active
    • The Throttle Position Indicated Angle parameter is between 3-90%.
    • The Loop Status parameter is closed.
    • The traction control is not active.
    • The above conditions must be met for at least 5 s.

Conditions for Setting the DTC

P0131

    • The ECM detects that the HO2S 1 signal voltage is not plausible for more than 2 s.
    • This diagnostic runs continuously.

Action Taken When the DTC Sets

DTC P0130 is a Type C DTC.

Conditions for Clearing the DTC

DTC P0130 is a Type C DTC.

Reference Information

Schematic Reference

Engine Controls Schematics

Connector End View Reference

Component Connector End Views

Electrical Information Reference

    •  Circuit Testing
    •  Connector Repairs
    •  Heated Oxygen Sensor Wiring Repairs
    •  Testing for Intermittent Conditions and Poor Connections
    •  Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

  1. Clear the DTCs with a scan tool.
  2. Operate the vehicle within the conditions for running and setting the DTC. The DTC should not set.
  3. 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 data.

Circuit/System Testing

Note: All modules must be powered down or misdiagnosis may result.

  1. Ignition OFF, disconnect the scan tool and wait 60 s to ensure all modules are powered down.
  2. Disconnect the harness connector at the B52 Heated Oxygen Sensor.
  3. Ignition ON, verify the scan tool HO2S parameter is approximately 450 mV.
  4. If more than the specified value, test the signal circuit for a short to voltage. If the circuit tests normal, replace the K20 Engine Control Module.
    If less than the specified value, test the signal circuit for a short to ground. If the circuit tests normal, replace the K20 Engine Control Module.
  5. Ignition ON, install a 3 A fused jumper wire at the B52 Heated Oxygen Sensor high signal circuit terminal 3. Toggle the jumper wire between the B52 Heated Oxygen Sensor low signal circuit terminal 4 and the battery. Verify the appropriate scan tool HO2S parameter toggles between 0 mV and approximately 1 000 mV.
  6. If the appropriate scan tool HO2S parameter does not toggle correctly, test the HO2S high signal circuit for an open/high resistance. If the circuit tests normal, replace the K20 Engine Control Module.
  7. If all circuits test normal, replace the B52 Heated Oxygen Sensor.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

    •  Heated Oxygen Sensor Replacement
    • Control Module References for ECM replacement, setup and programming
   


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