LEMON Manuals: Even more car manuals for everyone
Home >> Ford >> 2000 >> Contour SE, 2.0 3, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 2090 (Engine Controls - Powertrain DTC Charts And Descriptions (Except Diesel & Hybrid)) >> DTC Diagnosis >> P0534 - A/C Refrigerant Charge Loss

P0534 - A/C Refrigerant Charge Loss

WARNING: This page does not describe the selected car, but rather 32 other vehicles, including the 2008 Mercury Sable, 2008 Mercury Mountaineer, 2008 Mercury Milan, 2008 Mercury Mariner, and 2008 Mercury Grand Marquis. However, it is still accessible from the selected car via links, so may be relevant.
P0534 - A/C REFRIGERANT CHARGE LOSS

Description:  Indicates frequent A/C compressor clutch cycling.
Possible Causes: 
  • Mechanical A/C system concern (such as low refrigerant charge, damaged A/C cycling switch)
  • Intermittent open between the cycling pressure switch and the powertrain control module (PCM)
  • Intermittent open in the IGN RUN circuit to cycling pressure switch (if applicable)
Diagnostic Aids:  This test is designed to protect the transmission. In some strategies, the PCM unlocks the torque converter during A/C clutch engagement. If a concern is present that results in frequent A/C clutch cycling, damage could occur if the torque converter is cycled at these intervals. This test detects this condition, sets the DTC and prevents the torque converter from excessive cycling.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All   - - refer to PINPOINT TEST KM .
scientia non olet · About LEMON Manuals