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Home >> Jeep >> 2020 >> Grand Cherokee Trackhawk >> Repair and Diagnosis >> External Pages >> Different car >> Section 176 (Heating & Air Conditioning (ATC) - DTCS B11CB-18 To U12A7-00 - LHD - 2500HD & 3500HD) >> DTC Troubleshooting >> B11CD-00-Main/Left Temperature Door 1 Travel Too Large >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2019 RAM 3500 HD and 2019 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes
RELATED DTCS PRESENT
LEFT BLEND DOOR SIGNAL CIRCUIT OPEN OR HIGH RESISTANCE
LEFT BLEND DOOR SIGNAL CIRCUIT SHORTED TO GROUND
LEFT BLEND DOOR SIGNAL CIRCUIT SHORTED TO ANOTHER CIRCUIT
SIGNAL RETURN CIRCUIT OPEN OR HIGH RESISTANCE
5 VOLT SUPPLY CIRCUIT OPEN OR HIGH RESISTANCE
5 VOLT SUPPLY CIRCUIT SHORTED TO GROUND
5 VOLT SUPPLY CIRCUIT SHORTED TO ANOTHER CIRCUIT
LEFT BLEND DOOR STOPS NOT STOPPING DOOR
LEFT BLEND DOOR
LEFT BLEND DOOR ACTUATOR
HVAC MODULE

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