P0480 Code.
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Joined: 04-08-2008
Posts: 131
From: Lacombe, LA
P0480 Code.
Back again with a new issue. After finally getting ECM problem sorted out, I am working on the A/C system. I just replaced
the expansion valve, evacuated the system and let sit overnight. No leaks. While adding refrigerant with compressor running
after the system had enough refrigerant to allow compressor to start. System pressure almost the same on high and low sides.
Fan not running, hence the P0480 code. I checked all fuses and the relays. Relay coils have 79-80 ohms resistance, fuses good,
Fan runs if ECT sensor is disconnected. So far the system pressure is around 80 psi. Would this keep the fan off? Fan will not run on
defrost mode. I did a search and have yet to find any info other than what I checked. Any help would be appreciated.
the expansion valve, evacuated the system and let sit overnight. No leaks. While adding refrigerant with compressor running
after the system had enough refrigerant to allow compressor to start. System pressure almost the same on high and low sides.
Fan not running, hence the P0480 code. I checked all fuses and the relays. Relay coils have 79-80 ohms resistance, fuses good,
Fan runs if ECT sensor is disconnected. So far the system pressure is around 80 psi. Would this keep the fan off? Fan will not run on
defrost mode. I did a search and have yet to find any info other than what I checked. Any help would be appreciated.
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Joined: 12-05-2014
Posts: 3,352
From: Northern Ohio
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