Diagnostic Fault Information
Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
DTC P0133 or P0139
| Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
| HO2S Signal | P0131, P0137 | P0134, P0140 | P0132, P0138 | P0133, P0139 |
| Low Reference | - | P0134, P0140 | P0132, P0138 | P0133, P0139 |