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Jeep
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2021
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Grand Cherokee L Altitude, RWD
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Repair and Diagnosis
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Engine Performance
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System
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3.6L - DTCS P0037 To P0152
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Diagnosis And Testing
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P0057-O2 Sensor 2/2 Heater Circuit Low
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When Monitored
July 1:
So it begins
. Don't worry, this is not in the correct legal jurisdiction!
When Monitored
Battery voltage between 10.5 and 15.75 volts.
The O2 Sensor Heater is commanded on.
The O2 Sensor Heater circuit high fault is not active.