DTC P2031 / P242B / P246F / P24C2
Precautions: General safety (00)
DTC Detecting Condition and Trouble Area
| DTC detecting condition | Trouble area |
|---|---|
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P2031: Exhaust Gas Temperature Sensor Circuit (Bank1 Sensor2) Difference between EGT sensor-1 signal and other than EGT sensor-1 signal is higher than specified value when engine is cold started. (3 D/C detecting logic) |
•EGT sensor-1 and/or its circuit
•EGT sensor-2 and/or its circuit •EGT sensor-3 and/or its circuit •EGT sensor-4 and/or its circuit •ECM |
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P242B: Exhaust Gas Temperature Sensor Circuit Range / Performance (Bank1 Sensor3) Difference between EGT sensor-2 signal and other than EGT sensor-2 signal is higher than specified value when engine is cold started. (3 D/C detecting logic) |
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P246F: Exhaust Gas Temperature Sensor Circuit Range / Performance (Bank1 Sensor4) Difference between EGT sensor-3 signal and other than EGT sensor-3 signal is higher than specified value when engine is cold started. (3 D/C detecting logic) |
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P24C2: Diagnostic Fault Check During Cold Start Condition of Exhaust-Gas Temperatures At least one of EGT sensor-1, EGT sensor-2, EGT sensor-3 and EGT sensor-4 operates in a different way from the others. (3 D/C detecting logic) |
Circuit Diagram
| [A]: | ECM connector (View: [a]) | C1: | EGT sensor-3 signal circuit | 2. | EGT sensor-1 |
| A1: | EGT sensor-1 signal circuit | C2: | EGT sensor-3 ground circuit | 3. | EGT sensor-2 |
| A2: | EGT sensor-1 ground circuit | D1: | EGT sensor-4 signal circuit | 4. | EGT sensor-3 |
| B1: | EGT sensor-2 signal circuit | D2: | EGT sensor-4 ground circuit | 5. | EGT sensor-4 |
| B2: | EGT sensor-2 ground circuit | 1. | ECM |
DTC Troubleshooting
| Step | Action | Yes | No |
|---|---|---|---|
| 1 |
Was “Engine and Emission Control System Check” performed?
|
Go to Step 2.
|
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| 2 |
Sensor signal circuit and ground circuit check
1)Check signal circuit and ground circuit of the following sensors.
•EGT sensor-1: According to Step 2 of EGT Sensor-1 Check:D16AA.
•EGT sensor-2: According to Step 2 of EGT Sensor-2 Check:D16AA. •EGT sensor-3: According to Step 2 of EGT Sensor-3 Check:D16AA. •EGT sensor-4: According to Step 2 of EGT Sensor-4 Check:D16AA. Is check result OK?
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Go to Step 3.
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Repair or replace defective wire harness.
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| 3 |
EGT sensor-1 check
1)Check EGT sensor-1.
Is check result OK?
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Go to Step 4.
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Replace EGT sensor-1.
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| 4 |
EGT sensor-2 check
1)Check EGT sensor-2.
Is check result OK?
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Go to Step 5.
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Replace EGT sensor-2.
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| 5 |
EGT sensor-3 check
1)Check EGT sensor-3.
Is check result OK?
|
Go to Step 6.
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Replace EGT sensor-3.
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| 6 |
EGT sensor-4 check
1)Check EGT sensor-4.
Is check result OK?
|
Replace ECM and recheck DTC.
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Replace EGT sensor-4.
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