Code not in my list
07-18-2018, 05:59 PM
#1
Code not in my list
2002 with 102000 miles--Out for a nice ride today and service engine light comes on. --code c1277 and c1571 along with U1540 show up--What was wierd was while I was sitting at a couple of lights the ac just stopped working--no lights, fans, nothing. When I started to roll and pushed a couple of buttons on the ac it started working again. When I got home and pulled the codes U1540 is not on the list...I have a new battery and always keep it on a charger and the EBCM has been repaired by ABSfixer. Any thoughts? FYI --I never drive it in the rain nor do I wash it--just use waterless cleaners. I don't mind doing my own repairs if it is possible.Thanks in advance.
07-18-2018, 06:33 PM
#2
P1540 is high pressure switch on the A/C
detected high pressure and shut down A/C
detected high pressure and shut down A/C
07-18-2018, 06:35 PM
#3
Powertrain - Manufacturer Controlled DTC - Manufacturer ControlledDescriptionA/C System, High Pressure Conditions
CauseEngine running with A/C on, then the PCM detected the A/C Clutch was disabled 10 times by the A/C High Pressure Switch with an A/C High Side Temp of less than 109°F
CauseEngine running with A/C on, then the PCM detected the A/C Clutch was disabled 10 times by the A/C High Pressure Switch with an A/C High Side Temp of less than 109°F
07-18-2018, 06:48 PM
#4
Powertrain - Manufacturer Controlled DTC - Manufacturer ControlledDescriptionA/C System, High Pressure Conditions
CauseEngine running with A/C on, then the PCM detected the A/C Clutch was disabled 10 times by the A/C High Pressure Switch with an A/C High Side Temp of less than 109°F
CauseEngine running with A/C on, then the PCM detected the A/C Clutch was disabled 10 times by the A/C High Pressure Switch with an A/C High Side Temp of less than 109°F
07-18-2018, 07:18 PM
#5
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07-18-2018, 10:14 PM
#6
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I would check the fans to make sure they are working when the AC is on. Also check the radiator and condenser to see if there is debris causing an airflow restriction. Otherwise the problem could be refrigerant related. If 134a has been added in the past, it's possible that there is too much refrigerant in the system. In this case the system should be recovered, evacuated, and recharged.
One other possibility is the expansion device is plugged with debris.
One other possibility is the expansion device is plugged with debris.
07-19-2018, 09:01 AM
#7
When I stopped to fill the tank the cap was loose so that may have been the issue ( I hope) but the P1277 code still has me a bit worried. I won't be driving the car for about a week or so but I'll touch base with any of the codes that show up then. Thanks for the help guys.