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Home >> Jeep >> 2019 >> Renegade High Altitude, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1345 (Heating & Air Conditioning - DTCS B1912-15 To U2031-87) >> DTC Troubleshooting >> B1931-15-PTC Low Power Relay Driving Command Output - Circuit Short To Battery Or Open >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2020 Jeep Renegade. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes
CABIN HEATER 1 RELAY CONTROL CIRCUIT SHORTED TO VOLTAGE
CABIN HEATER 1 RELAY CONTROL CIRCUIT SHORTED TO ANOTHER CIRCUIT
PTC 1 RELAY
HVAC MODULE

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