P0130

CIRCUIT DESCRIPTION
When the vehicle is first started, the engine operates in an Open Loop operation, ignoring the heated oxygen sensor signal and calculating the air/fuel ratio based on inputs from the engine coolant temperature (ECT), the throttle position (TP), and the manifold absolute pressure (MAP) sensors only. The powertrain control module (PCM) will begin by using the heated oxygen sensor (HO2S) signal for controlling the fuel delivery (Closed Loop) when the following conditions are met:
^ The engine has run a minimum amount of time based on ECT at engine start up.
^ The heated oxygen sensor (HO2S) 1 has a varying voltage output showing that the sensor is hot enough to operate properly.
^ The ECT has increased a minimum amount based on the ECT at engine start up.

CONDITIONS FOR RUNNING THE DTC
^ DTCs P0105, P0107, P0108, P0116, P0117, P0118, P0122, P0123, P0125, P0131, P0132, P0133, P0134, P0201, P0202, P0203, P0204, P0205, P0206, P0300-P0306, P0335, P0336, P0351-P0356, P0601, P0602, P0604, P0606, P1120, P1133, P1220, P1221, P1271, P1275, P1280, P1484, P1512, P1514, P1515, P1516, P1635, P1639, or P1681 are not set.
^ The engine run time is more than 100 seconds.
^ The engine speed is between 1,200-3,400 RPM.
^ The TP indicated angle is between 15-50 percent.
^ The ECT sensor is more than 80°C (176°F).
^ The accelerator pedal position (APP) indicated angle is more than 1.2 percent.
^ The above conditions have been met for 5 seconds.

CONDITIONS FOR SETTING THE DTC
The engine is in Open Loop for 7.5 seconds out of 12.5 seconds.

ACTION TAKEN WHEN THE DTC SETS
^ The malfunction indicator lamp (MIL) will illuminate after two consecutive ignition cycles in which the diagnostic runs with the malfunction present.
^ The PCM will record the operating conditions at the time that the diagnostic fails. This information will store in the Freeze Frame/Failure Records buffers.
^ A history DTC stores.

CONDITIONS FOR CLEARING THE MIL/DTC
^ The MIL will turn OFF after three consecutive ignition cycles in which the diagnostic runs without a fault.
^ A history DTC will clear after 40 consecutive warm up cycles without a fault.
^ Use a scan tool to clear the DTCs.

TEST DESCRIPTION

DTC P0130 - Steps 1-9:

DTC P0130 - Steps 10-14:

The numbers below refer to the step numbers on the diagnostic table.
2. When the system is operating correctly the HO2S voltage should toggle above and below the specified values.
5. The specified value is what is measured on a correctly operating system.
6. The specified value is what is measured on a correctly operating system.