Chevrolet P1543: Air Conditioning System Range/Performance
Is your scanner showing Chevrolet P1543?
No worries. We'll show you what it means and how to deal with it.
Chevrolet P1543: Air Conditioning System Range/Performance
OVERVIEWWhat Does The Chevrolet P1543 Code Mean?
Engine started; and the PCM detected the A/C refrigerant charge was less than a specified value (due to Evaporator Temperature and Refrigerant Pressure signals).
What Are The Potential Causes Of The Chevrolet P1543 Code?
- A/C refrigerant pressure sensor is out-of-calibration or skewed
- A/C evaporator temperature sensor out-of-calibration or skewed
- A problem in the A/C compressor or A/C thermal expansion valve can also cause this code to set – check the A/C system.
Recommended Parts
Below are some recommended auto parts to help you address the trouble code affecting your vehicle and get it running smoothly again:
Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!
Reference Sources
GM, 2013, Service Bullettin – Prior To Any Circuit Testing.
