Mike's Workshop Manuals
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Jeep
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2021
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Cherokee High Altitude, Automatic T/Case Control
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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 P023A To P0449
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DTC Troubleshooting
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P042D-Catalyst Temperature Sensor Circuit High (Bank 1 Sensor 2)
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When Monitored
When Monitored
This diagnostic runs continuously when the following conditions are met:
With the ignition on.