• HVAC system not working
• Inability to control temperature
• Check engine light on
• Faulty climate control module
• Damaged wiring or connectors
• Faulty ECM
ECM: Engine Control Module
HVAC: Heating, Ventilation, and Air Conditioning
• U0100
• U0140
Your car's computer is having trouble talking to a part that helps control the temperature inside the car.
The code U0135 indicates a loss of communication with the control module responsible for the HVAC system.
U0135 is a diagnostic trouble code (DTC) for 'Lost Communication with Climate Control Module'. This means that the vehicle's main computer (ECM) is not receiving communication from the climate control module, which can affect the heating, ventilation, and air conditioning (HVAC) system.
• Check for other related codes
• Inspect wiring and connectors for damage
• Test the climate control module
• Repair or replace damaged wiring
• Replace faulty climate control module
• Reprogram or replace ECM if necessary
• OBD-II scanner
• Multimeter
• Screwdriver set
$150 - $600
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regular maintenance checks
• Ensure wiring is intact
• Avoid moisture exposure to electronics
Communication Error
• Have the HVAC system checked regularly
• Address any warning lights promptly
Check with your vehicle manufacturer for warranty coverage on electronic modules.
U0135 has been a common code in vehicles with complex electronic systems, often due to wiring issues.
Moderate – It may not affect drivability immediately but should be addressed to ensure comfort and proper HVAC function.
Ignoring this code may lead to discomfort or reduced visibility if the HVAC system fails to function properly.
• Vehicle ignition in ON position
• HVAC system activated
The climate control module is typically located behind the dashboard, near the HVAC controls.
Q: Can I drive with this code?
A: Yes, but the HVAC system may not function properly, affecting comfort.
Q: Will this code clear itself?
A: It might clear if the issue is intermittent, but it's best to diagnose and fix the problem.
