DTC P0407 / P0408 / P045E / P046E / P0486
Precautions: General safety (00)
DTC Detecting Condition and Trouble Area
| DTC detection condition | Trouble area |
|---|---|
|
P0407: Exhaust Gas Recirculation Sensor “B” Circuit Low Measured voltage of EGR-2 valve position sensor signal circuit is lower than specified value. (3 D/C detecting logic) |
•EGR-2 valve position sensor and/or its circuit
•ECM |
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P0408: Exhaust Gas Recirculation Sensor “B” Circuit High Measured voltage of EGR-2 valve position sensor signal circuit is higher than specified value. (3 D/C detecting logic) |
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P045E: Exhaust Gas Recirculation “B” Control Stuck Open Measured EGR-2 valve position is higher than specified value when EGR-2 valve is closed. (3 D/C detecting logic) |
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P046E: Exhaust Gas Recirculation Sensor “B” Circuit Range / Performance Any of the following conditions is met.
•Measured EGR-2 valve position is lower than specified value. (3 D/C detecting logic)•Difference between target EGR-2 valve position and measured EGR-2 valve position is higher than specified value for specified time. |
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P0486: Exhaust Gas Recirculation Sensor “B” Circuit Any of the following conditions is met.
•Measured voltage of EGR-2 valve position sensor signal circuit is lower than specified value for specified time. (3 D/C detecting logic)•Measured voltage of EGR-2 valve position sensor signal circuit is higher than specified value for specified time. |
Circuit Diagram
| [A]: | ECM connector (View: [a]) | B1: | EGR-2 valve position sensor power supply circuit | 1. | ECM |
| A1: | EGR-2 valve (+) drive circuit | B2: | EGR-2 valve position sensor signal circuit | 2. | EGR-2 valve motor |
| A2: | EGR-2 valve (–) drive circuit | B3: | EGR-2 valve position sensor ground circuit | 3. | EGR-2 valve position sensor |
DTC Troubleshooting
| Step | Action | Yes | No |
|---|---|---|---|
| 1 |
Was “Engine and Emission Control System Check” performed?
|
Go to Step 2.
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| 2 |
EGR-2 valve position sensor power supply, signal and ground circuit check
1)Check “B1”, “B2” and “B3” circuits according to Step 3 – 6 of EGR-2 Valve Position Sensor Check:D16AA.
Is check result OK?
|
Go to Step 3.
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Repair or replace defective wire harness.
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| 3 |
EGR-2 valve check
1)Check EGR-2 valve.
Is check result OK?
|
Replace ECM and recheck DTC.
|
Replace EGR-2 valve.
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