Heating Up Honda Dashboard Vents

This bulletin applies to 2013 Honda Fit vehicles equipped with A/C. If the left dashboard side vent is warmer than the right side vent with the A/C on chances are the evaporator core isn’t being flooded with enough liquid refrigerant, causing it to fully vaporize halfway through the core.

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Dec. 5, 2022
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This bulletin applies to 2013 Honda Fit vehicles equipped with A/C. If the left dashboard side vent is warmer than the right side vent with the A/C on chances are the evaporator core isn’t being flooded with enough liquid refrigerant, causing it to fully vaporize halfway through the core. As a result, the side of the core with some refrigerant (the right duct) stays cold, while the side that’s fully vaporized (driver’s duct) is warmer by about 20 degrees F or more.

The most likely cause for this problem is a low refrigerant charge, possibly due to a leak. Another culprit might be a restricted line or component that’s cutting the flow of liquid refrigerant.

About the Author

Information courtesy of Mitchell 1

Information for Technical Service Bulletins comes from ProDemand, Mitchell 1's auto repair information software for domestic and import vehicles. Headquartered in San Diego, Mitchell 1 has provided quality repair information solutions to the automotive industry since 1918.

Mike Mavrigian
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Mike Mavrigian

Motor Age Editor

Mike Mavrigian has written thousands of automotive technical magazine articles involving a variety of  specialties, from engine building to wheel alignment, and has authored more than a dozen books that crisscross the automotive spectrum. Mike operates Birchwood Automotive, an Ohio shop that builds custom engines and performs vintage vehicle restorations. The shop also features a professional photo studio to document projects and to create images for articles and books.

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