DTC P0133
Precautions: General safety (00)
DTC Detecting Condition and Trouble Area
| DTC detecting condition | Trouble area |
|---|---|
|
P0133: O2 Sensor Circuit Slow Response (Sensor 1) Cycle duration from rich to lean and lean to rich of HO2S-1 is longer than specified time. (3 D/C detection logic) |
•HO2S-1 and/or its circuit
•HO2S-1 heater •Air intake system •Exhaust system •Fuel system •ECM |
Circuit Diagram
| [A]: | ECM connector (View: [a]) | B1: | HO2S-2 heater power supply circuit | 2. | HO2S-2 |
| A1: | HO2S-1 heater power supply circuit | B2: | HO2S-2 signal circuit | 3. | ECM |
| A2: | HO2S-1 signal circuit | B3: | HO2S-2 ground circuit | 4. | Shield wire |
| A3: | HO2S-1 ground circuit | B4: | HO2S-2 heater drive circuit | ||
| A4: | HO2S-1 heater drive circuit | 1. | HO2S-1 |
DTC Confirmation Procedure
WARNING:
If you do not select a suitable route and take proper precautions when performing a road test, an accident can occur.
•Select a level road with no traffic to minimize the risk of accident.
•Perform the test extremely carefully.
•Perform the road test with 2 persons, a driver and a tester.
•Perform the test extremely carefully.
•Perform the road test with 2 persons, a driver and a tester.
NOTE:
•Check that the following condition is met in this “DTC Confirmation Procedure”.
—A/F feedback (closed loop) control is activated.
•Check that the following DTCs are not detected in this “DTC Confirmation Procedure”.
—HO2S-1 heater (P0030, P0031 and P0032)
—HO2S-1 (P0130, P0131, P0132 and P0134)
—Fuel trim system (P0171 and P0172)
—Cylinder misfire detected (P0300)
—CKP sensor (P0335)
—CMP sensor (P0340)
—EVAP canister purge valve (P0443, P0458 and P0459)
—System voltage (P0560, P0562 and P0563)
—HO2S-1 (P0130, P0131, P0132 and P0134)
—Fuel trim system (P0171 and P0172)
—Cylinder misfire detected (P0300)
—CKP sensor (P0335)
—CMP sensor (P0340)
—EVAP canister purge valve (P0443, P0458 and P0459)
—System voltage (P0560, P0562 and P0563)
1)Warm up engine to normal operating temperature.
2)With engine speed at 1,600 to 2,500 rpm, drive vehicle at 50 to 80 km/h (31 to 50 mile/h) for 5 min.
3)Check whether O2 sensor readiness / monitoring test has completed or not using scan tool. If O2 sensor readiness / monitoring test has not completed, check vehicle conditions (environmental) and repeat Step 2) – 3).
DTC Troubleshooting
| Step | Action | Yes | No |
|---|---|---|---|
| 1 |
Was “Engine and Emission Control System Check” performed?
|
Go to Step 2.
|
|
| 2 |
DTC check
Is there any DTC(s) other than P0133?
|
Go to troubleshooting for applicable DTC.
|
Go to Step 3.
|
| 3 |
Exhaust system and air intake system check
1)Check exhaust system and air intake system for clogging or leakage.
Is check result OK?
|
Go to Step 4.
|
Repair or replace defective part.
|
| 4 |
Fuel system inspection
1)Check fuel system according to Fuel System Inspection:M16A.
Is check result OK?
|
Go to Step 5.
|
Repair or replace defective part.
|
| 5 |
HO2S-1 signal circuit check
1)Check “A2” and “A3” circuits according to Step 3 under DTC P0131 / P0132:M16A.
Is check result OK?
|
Go to Step 6.
|
Repair or replace defective wire harness.
|
| 6 |
HO2S-1 heater check
1)Check HO2S-1 heater.
Is check result OK?
|
Go to Step 7.
|
Replace HO2S-1.
|
| 7 |
DTC recheck
1)Replace HO2S-1.
2)Perform “DTC Confirmation Procedure” and check DTC.
Is DTC P0133 still detected?
|
Replace ECM and recheck DTC.
|
End.
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