| 1 |
Was "Engine and Emission Control System Check" performed? |
Go to Step 2. |
Go to ENGINE AND EMISSION CONTROL SYSTEM CHECK . |
| 2 |
DTC check
Is there any DTC(s) other than P0133? |
Go to troubleshooting for applicable DTC. |
Go to Step 3. |
| 3 |
A/F sensor signal circuit check
- Check A/F sensor signal circuit referring to Step 3 of DTC P0131: O2 Sensor (HO2S) Circuit Low Voltage (Bank-1 Sensor-1); P0132: O2 Sensor (HO2S) Circuit High Voltage (Bank-1 Sensor-1); P0134: O2 Sensor (HO2S) No Activity Detected (Bank-1 Sensor-1); P2195: O2 Sensor Signal Stuck Lean (Bank-1 Sensor-1); P2196: O2 Sensor Signal Stuck Rich (Bank-1 Sensor-1); P2237: O2 Sensor Positive Current Control Circuit/Open DTC P0131/P0132/P0134/P2195/P2196/P2237
.
Are they in good condition? |
Go to Step 3. |
Repair or replace defective wire harness. |
| 4 |
DTC recheck
- Replace A/F sensor. Refer to A/F (AIR FUEL RATIO) SENSOR, HO2S (HEATED OXYGEN SENSOR) REMOVAL AND INSTALLATION
.
- Perform
DTC confirmation procedure and check DTC.
Is DTC P0133 still detected? |
Substitute a known-good ECM and recheck. |
End. |