1A
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
WARNING:
• 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
1
Was “Engine and Emission Control System Check” performed?
Go to Step 2.
Go to Engine and Emission Control System Check:M13A without VVT .
2
Is there DTC(s) other than HO2S (DTC P0130)?
Go to applicable DTC diag. flow.
Go to Step 3.
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.