DTC P0130 (No.14): Heated Oxygen Sensor (HO2S) Circuit Malfunction
Wiring Diagram
1. Heated oxygen sensor (HO2S) 2. ECM 3. To other sensor
DTC Detecting Condition and Trouble Area
DTC detecting condition Trouble area
When running at idle speed after engine warmed up and running at specified vehicle speed, HO2S output voltage does not go below 0.3 V or over 0.6 V.
Heated oxygen sensor malfunction
“BLK/BLU” or “RED” circuit open (poor connection) or short
DTC Confirmation Procedure
When performing a road test, select a place where there is no traffic or possibility of a traffic accident and be very careful during testing to avoid occurrence of an accident.
Road test should be carried out with 2 persons, a driver and a tester.
1) Turn ignition switch OFF. Clear DTC with ignition switch ON, check vehicle and environmental condition for:
Altitude (barometric pressure): 2400 m, 8000 ft or less (560 mmHg, 75 kPa or more)
Ambient temp.: –10 °C, 14 °F or higher
Intake air temp.: 70 °C, 158 °F or lower
2) Warm up engine to normal operating temperature.
3) Drive vehicle at 30 – 40 mph, 50 – 60 km/h for 2 min.
4) Stop vehicle and run engine at idle for 2 min.
5) Select “DTC” mode on scan tool and check DTC.
DTC Troubleshooting
Step Action YES NO
Was “Engine and Emission Control System Check” performed?
Go to Step 2.
Is there DTC(s) other than HO2S (DTC P0130)?
Go to applicable DTC diag. flow.
Go to Step 3.
Check HO2S signal
1) Connect scan tool to DLC with ignition switch OFF.
2) Warm up engine to normal operating temperature and keep it at 2000 r/min. for 60 sec.
3) Repeat racing engine (Repeat depressing accelerator pedal 5 to 6 times continuously and take foot off from pedal to enrich and enlean A/F mixture).
Does HO2S output voltage deflect between 0.3 V and over 0.6 V repeatedly?
Intermittent trouble. Check for intermittent referring to Intermittent and Poor Connection Inspection .
Check “RED” and “BLK/BLU” wires for open and short, and connections for poor connection.
If wires and connections are OK, replace HO2S.