P0130
P0130 A/F Sensor 1Component Description
The A/F sensor 1 is a planar dual-cell limit current sensor. The sensor element of the A/F sensor 1 is the combination of a Nernst concentration cell (sensor cell) with an oxygen-pump cell, which transports ions. It has a heater in the element.
The sensor is capable of precise measurement lambda = 1, but also in the lean and rich range. Together with its control electronics, the sensor outputs a clear, continuous signal throughout a wide lambda range (0.7
The exhaust gas components diffuse through the diffusion gap at the electrode of the oxygen pump and Nernst concentration cell, where they are brought to thermodynamic balance.An electronic circuit controls the pump current through the oxygen-pump cell so that the composition of the exhaust gas in the diffusion gap remains constant at lambda = 1. Therefore, the A/F sensor 1 is able to indicate air-fuel ratio by this pumping of current. In addition, a heater is integrated in the sensor to ensure the required operating temperature of 700 - 800 °C (1,292 - 1,472 °F).
On Board Diagnosis Logic
To judge malfunctions, the diagnosis checks that the A/F signal computed by ECM from the air fuel ratio (A/F) sensor 1 signal fluctuates according to fuel feedback control.
P0130:
DTC Confirmation Procedure
Perform PROCEDURE FOR MALFUNCTION A first.
If the DTC cannot be confirmed, perform PROCEDURE FOR MALFUNCTION B.
NOTE: If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 11 V at idle.
PROCEDURE FOR MALFUNCTION A
With SDT
1. Start engine and warm it up to normal operating temperature.
2. Let engine idle for 2 minutes.
3. Check 1st trip DTC.
4. If 1st trip DTC is detected, go to [P0130 A/F Sensor 1].
With GST
Follow the procedure "With SDT" above.
PROCEDURE FOR MALFUNCTION B
CAUTION: Always drive vehicle at a safe speed.
With SDT
1. Start engine and warm it up to normal operating temperature.
2. Select "A/F SEN1 (B1)" in Data list mode with SDT.
3. Check "A/F SEN1 (B1)" indication.
If the indication is constantly approx. 1.5V and does not fluctuates, go to [P0130 A/F Sensor 1].
If the indication fluctuates around 1.5 V, go to next step.
4. Select "A/F SEN1 (B1) P1276" of "A/F SEN1" in DTC work support mode with SDT.
5. Touch "START".
6. When the following conditions are met, "TESTING" will be displayed on the SDT screen.
If "TESTING" is not displayed after 20 seconds, retry from step 2.
7. Release accelerator pedal fully.
NOTE: Never apply brake when releasing the accelerator pedal.
8. Make sure that "TESTING" changes to "COMPLETED".
If "TESTING" changed to "OUT OF CONDITION", retry from step 6.
9. Make sure that "OK" is displayed after touching "DTC check".
If "NG" is displayed, go to [P0130 A/F Sensor 1].
Overall Function Check
Use this procedure to check the overall function of the A/F sensor 1 circuit. During this check, a 1st trip DTC might not be confirmed.
PROCEDURE FOR MALFUNCTION B
With GST
1. Start engine and warm it up to normal operating temperature.
2. Drive the vehicle at a speed of 80 km/h (50 MPH) for a few minutes in the suitable gear position.
3. Set D position with OD "OFF" (A/T) or 4th position (M/T), then release the accelerator pedal fully until the vehicle speed decreases to 50 km/h (30 MPH).
NOTE: Never apply brake when releasing the accelerator pedal.
4. Repeat steps 2 and 3 for 5 times.
5. Stop the vehicle and turn ignition switch OFF.
6. Wait at least 10 seconds and restart engine.
7. Repeat steps 2 and 3 for 5 times.
8. Stop the vehicle and connect GST to the vehicle.
9. Make sure that no 1st trip DTC is displayed.
If the 1st trip DTC is displayed, go to [P0130 A/F Sensor 1].
Diagnosis Procedure
Step 1:
Step 2-3:
