How to troubleshoot a heater in a honda civic

Written by andrea stein
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How to troubleshoot a heater in a honda civic
Honda Civics are considered reliable compact cars, but they can develop heater problems. (yellow car, a honda Japanese sport car model image by alma_sacra from

The Honda Civic, a compact car introduced in 1972 by Honda, is renowned for its affordability and reliability. Despite these advantages, Honda Civics can develop heater problems.

Clogged Condenser

Debris, such as bugs, leaves and dirt, can enter the condenser -- which condenses the refrigerant while releasing heat into the air -- and clog it. Clean the condenser with compressed air to clear out any obstructions and restore proper Honda civic heating.

Coolant Leak

When coolant in the Honda Civic engine block heats to a certain temperature, the thermostat opens, and coolant passes through the radiator. Cracks or deterioration in the radiator's tubing can result in coolant leaks, which can impair Honda Civic heater operation. Inspect for damaged tubing and replace as needed.

Bad Fuse

A thermal fuse in the Honda Civic control unit uses a fusible link which consists of two pieces of metal designed to melt at a certain temperature, to protect excess heat from reaching the blower motor. A faulty thermal fuse can impair the function of the blower motor fan, causing it to run too fast or not at all. Replace the thermal fuse to correct the problem.

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