P0134

DESCRIPTION
Refer to DTC P0130 & P0136.

FAILURE CONDITIONS
After the engine runs for 3 minutes, the ECM checks the front oxygen sensor. If during 2 driving cycles the front oxygen sensor's output voltage is not between 400 and 600 millivolts for 5 seconds, the ECM will set a code and MIL will turn on. This code indicates the front oxygen sensor is not active within the expected range once the engine has been warmed.

Circuit Diagram:

Test Procedure Part 1:

Test Procedure Part 2:

Test Procedure Part 3: