Mike's Workshop Manuals
: Service manuals for every vehicle
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Jeep
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2020
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Grand Cherokee Trackhawk
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Repair and Diagnosis
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Engine Performance
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System
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6.2L - DTCS P219A To P2A0B
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DTC Troubleshooting
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P2256-O2 Sensor 2/1 Negative Current Control Circuit High
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Default Action
Default Action
MIL is illuminated on the first trip that the diagnostic fails.
The MIL will be turned off on the third consecutive trip that the diagnostic passes.