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Home >> Jeep >> 2023 >> Grand Cherokee Altitude, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 59 (5.7L - DTCS B1F08 To P0058) >> DTC Troubleshooting >> P0037 O2-Sensor 1/2 Heater Circuit Low >> Possible Causes

Possible Causes

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Possible Causes
O2 SENSOR 1/2 HEATER CONTROL CIRCUIT SHORTED TO GROUND
O2 SENSOR 1/2 HEATER CONTROL CIRCUIT SHORTED TO THE O2 SENSOR GROUND CIRCUIT
O2 SENSOR 1/2
POWERTRAIN CONTROL MODULE (PCM)

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to  PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE  .