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P2517 OBD-II Trouble Code: A/C Refrigerant Press Sensor B Circuit Low
P2517 code means the A/C refrigerant pressure sensor is out of the normal refrigerant level range, a faulty switch, wiring, or connectors.
How to Troubleshoot a Surge Caused by Car Air Conditioning
Car air conditioning can cause a surge in the car engine if belt have slipped, the throttle body is faulty, or the idle control valve needs replacing.
How to Replace an Air Conditioning Expansion Valve (Orifice Tube)
Car air conditioning systems need the expansion valve, or orifice tube, replaced if the AC is blowing warm air or the AC system is broken.
P2613 OBD-II Trouble Code: A/C Refrigerant Distribution Valve Control Circuit High
P2613 means a problem with the A/C refrigerant distribution valve control circuit which causes the air conditioning to not work properly.
P0539 OBD-II Trouble Code: A/C Evaporator Temperature Sensor Circuit Intermittent
P0539 means the A/C evaporator temperature sensor has a too high/low voltage signal, usually caused by a faulty evaporator temperature sensor.
How to Replace an AC Accumulator
The accumulator in the air conditioning system is faulty if there is rattling inside of it or there is a moldy smell emitting from the AC system.
How to Diagnose a Broken Car Heater
A working car heater will keep you warm and defrost your car. A failing radiator, thermostat, or heater core can cause your heating system to fail.
How to Diagnose an Inoperative Air Conditioning System Faster and Easier
Automotive technicians diagnose an inoperative air conditioning system with a digital scanner, physical inspection, and under the hood examination.
Should I Get an EPA Technician Certification?
Automotive technician jobs often require EPA technician certification for mechanics, so you can make repairs on automotive air conditioning systems.
How to Get an EPA License as an Automotive Technician
Automotive technician jobs require an EPA certification to learn how about the environment while repairing automotive air conditioning systems.
How to Replace an AC Clutch Cycling Switch
An AC clutch cycling switch meters low side AC pressure. This switch helps the AC system maintain proper cabin and evaporator temperatures.
How to Replace an Evaporator Temperature Sensor (Switch)
The air conditioning system has an evaporator temperature sensor that fails when there is no cold air or the air conditioning is inconsistent.
How Does a Car Air Conditioning System Work?
Auto air conditioners serve well on hot summer days to make driving more pleasant by cooling the air and removing excess moisture in the car.
How to Get an EPA Technician Certification
The EPA (Environmental Protection Agency) technician certification program educates people who wish to repair automotive air conditioning systems.
How to Replace an AC Pressure Switch
The AC pressure switch protects the AC system from pressure that's too high or low. Common signs of failure include a bad compressor or lack of AC.
How to Clean Evaporator Drain Tubes
The air conditioning system on a car has evaporator drain tubes than need cleaning if there is dirty air in the car or it is not blowing consistently.
How to Replace a Car Air Conditioning (AC) Compressor
If the AC compressor fails, it can cause the air conditioning system not to work. This article covers how to locate, remove, and install a compressor.
How to Replace a Heater Blower Motor Switch or Relay
The motor switch on your heater and air conditioning goes bad when the switch gets stuck in certain positions or will not budge at all.
How to Replace an Air Conditioning Belt
Replacing an AC belt can be challenging, as you have to locate specific parts in the car in order to do so, and use proper tools to complete the task.
How to Replace a Car Air Conditioning (AC) Low Pressure Hose
Car air conditioning (AC) low pressure hoses carry refrigerant back into the compressor to keep providing cold air in a closed loop system.

Related questions

Question
Where can i get a good ac compressor for my toyota sienna 2004 but wont break the bank?
Unfortunately, a/c repairs can be hard to save money on due to the special tools required, the need to open the system for many a/c repairs (which requires time consuming recovery, evacuation and re-charging) and the difficulty of using used...
Question
I just replaced my air compressor and got with it an expanstion valve and filter drier but cant locate filter drier on the car
The receiver drier is located on the passenger side in front of the a/c condenser between the condenser and the line that goes to the expansion valve. It is mounted directly to condenser.
Question
Where is the dryer located on my 2003 Infiniti FX35
The dryer is bolted to the left side of the condenser as you face the front of the vehicle. It is a relatively long tube and small in diameter. On these systems you have to be sure that you thoroughly...
Question
2003 honda odyssey cooling fans don't turn on with AC, ac works while driving and shuts off when sitting still
If the fans are not working properly and consistently to cool and condense the refrigerant in the condenser, pressure in the system could rise high enough to trip the high pressure cut off switch, thus accounting for the compressor shut...
Question
I have a 2012 Infiniti QX56 and went through exactly what this person did with the truck going to the dealer in perfect order and
A/C systems that are leaking will function up to a "threshold", that is a minimum level of refrigerant charge, but once the charge drops below that threshold the system's low pressure cut off switch will shut down the compressor. The...
Question
Car hard to steer, making loud noises, and the AC is blowing warm
The screeching noise may be due to a fault in one of the driven elements in the serpentine drive belt "circuit". There are both devices (e.g., alternator, A/C) and pulleys in that circuit. Every driven element in the circuit has...
Question
What should it cost to replace ac compressor, accumulator
It takes roughly 12 hours to replace the compressor and expansion valve. As you may know, the expansion valve is attached to the evaporator under the dash and thus is not readily accessible, hence the hours. If you input your...
Question
I was putting in the alternator and then after I had all the bolts tighten down all that I heard a hissing sound and then the freo
Your vehicle has R134a refrigerant. If you weld on a system that has any remaining R134a refrigerant in it, combustion of that refrigerant WILL create poisonous gases that will injure or kill you. Indeed, the firefighting instructions for R134a fires...
Question
Strange rattling/tapping noise at low rpm when accelerating lightly
Hi...the noise can be diagnosed by taking all the belt driven accessories out of the picture by momentarily running the engine without the serpentine belt. If the noise remains, then the search is focused on internal engine parts. If the...
Question
A/C air blowing warm air while idling
If high and low side pressures are within normal range, at idle and beyond, the compressor is on at idle (or cycling normally) and yet there is no cold air, the condenser is probably blocked externally with dirt and debris...
Question
2005 dodge Caravan overheated air conditioner is blowing heat one of the fans was not working so I replaced it air conditioner sti
Hello, thank you for writing in. If you have not resolve the issue(s) that caused the vehicle to overheat in the first place, then you need to start there. Do so by checking the level of your coolant, the radiator...
Question
Hello, my car's temperature isn't rising, so the ac isn't working, what do you think is the problem? Compressor, or Radiator?
The radiator is part of the engine cooling system and would not typically be inspected or serviced if the passenger compartment air conditioning system is not working. If the car engine is overheating you might inspect the radiator though. If...
Question
Hi peter, I recently was in a minor car accident where my light bar was pushed into my condenser on my f-350 after being at the bo
I would have thought that they would have tested the A/C prior to releasing the vehicle. If there were no problems with the A/C before the accident, and the only thing you needed was a condenser, that's a straightforward repair...
Question
I have a 2004 Buick Century with 3.1 v6. The ac compressor will occasionally build high pressures and blow freon out. Also, the f
If the condenser fans are not working, that will cause the abnormally high pressure you are seeing. So, I would first check that possibility and if indeed there is a fault, resolve that first. Once the condensers fans are confirmed...
Question
Hi Jamahl, My A/C all of a sudden stopped working. I took it to Advanced to get refrigerant, but when the guy tried to apply it,
If the A/C system was working properly (producing cold output) and then just "suddenly" stopped, broadly there are two possibilities: 1) you got a large sudden leak and consequently all the refrigerant disappeared at once; or 2) the refrigerant charge...
Question
A/C wires under pass. Dash are burnt and the wire wraps are hard
If the damaging wiring is in the A/C control circuit, the condition of the wiring that you are describing might be relevant to the problem you are having. Burnt wires mean high resistance in the circuit, so maybe there is...
Question
Honda Element air conditioning is blowing warm air at lights last year we replaced the fan condenser (2) and it did it today again
You will need to have the computer for the powertrain scanned since it controls the a/c compressor and fans coming on. You could have a clutch cycling switch that is bad.
Question
My dealer gave a quote of $2750 for replacing evaporator and expansion valve for my 2008 Lexus ES350. Does that look reasonable? c
The only reason to replace the evaporator would be if the evaporator were physically blocked internally or if it is leaking refrigerant. Be sure to obtain tangible proof of either circumstance. Verification is particularly important because evaporator leaks, except at...
Question
My a/c isn't blowing cold air.
The belt has to be on the compressor for the system to work. If you haven't already done so, installing a new belt will be a good first step and it may solve all your trouble. But if the air...

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