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Jeep
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2023
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Grand Cherokee 4xe
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Repair and Diagnosis
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Engine Performance
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System
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2.0L - DTCS P2127 To P2400
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DTC Troubleshooting
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P2237 O2 Sensor 1/1 Pump Cell Current Circuit / Open
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Default Action
Default Action
MIL is illuminated on the second consecutive trip that the diagnostic fails.
The MIL will be turned off on the third consecutive trip that the diagnostic passes.