Mike's Workshop Manuals
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Grand Cherokee Trackhawk
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Repair and Diagnosis
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Engine Performance
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6.2L - DTCS P000B To P0140
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DTC Troubleshooting
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P0071-Ambient Air Temperature Sensor Performance
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Set Condition
Set Condition
After a calibrated amount of cool down time, the PCM compares the AAT, ECT, and IAT Sensor values. If one sensor value is not within 15°C (59°F) of the other temperature sensors, a fault is set.