DTC P0133 & DTC P0134: Notes

Code Definition

DTC P0133: Front Heated Oxygen Sensor Circuit Slow Response
DTC P0134: Front Heated Oxygen Sensor Circuit No Activity Detected

NOTE: Before performing any diagnostic test, refer to WARNINGS, CAUTIONS and NOTES in DIAGNOSTIC TESTS .

NOTE: Testing individual components does not isolate shorts or opens. Perform all voltage tests using a Digital Volt-Ohm Meter (DVOM) with a minimum 10-megohm input impedance, unless stated otherwise in test procedure. Use ohmmeter to isolate wiring harness shorts or opens.