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Home >> Jeep >> 2017 >> Wrangler Sahara, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 42 (3.2L - DTCS B104D To P0123) >> DTC Troubleshooting >> B104E-Blend Door Control Circuit High >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2017 Jeep Cherokee. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes
BLEND DOOR ACTUATOR SIGNAL CIRCUIT SHORTED TO VOLTAGE
BLEND DOOR ACTUATOR SIGNAL CIRCUIT OPEN/HIGH RESISTANCE
ACTUATOR RETURN SIGNAL CIRCUIT OPEN/HIGH RESISTANCE
BLEND DOOR ACTUATOR SIGNAL CIRCUIT SHORTED TO 5-VOLT REFERENCE CIRCUIT
BLEND DOOR ACTUATOR
HVAC MODULE

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