4-Pin A/C Pressure Switch & Sensor Connector – Brown & Grey, Male & Female OEM

This 4-pin automotive connector is used in air conditioning (A/C) pressure switch and refrigerant pressure sensor harnesses. Available in Brown and Grey housing colors, Male and Female variants, bare or with 15cm pre-wired leads. The A/C pressure sensor connector is a critical climate control circuit component – a degraded connector causes A/C compressor faults, refrigerant pressure sensor errors, and B-code fault codes.

Key Specifications

Why A/C Sensor Connectors Fail

A/C pressure sensor connectors are mounted near the refrigerant lines, exposed to vibration, temperature cycling, and refrigerant oil contamination. Terminal corrosion or housing damage causes A/C compressor clutch engagement failures, refrigerant pressure sensor faults, or complete A/C system shutdown. Symptoms include no cold air, A/C compressor not engaging, and B1200-series or P0530-series fault codes.

Variant Guide

• Brown Female / Brown Female 15CM – Brown socket housing, bare or pre-wired
• Grey Female / Grey Female 15CM – Grey socket housing, bare or pre-wired
• Grey Male / Grey Male 15CM – Grey plug housing, bare or pre-wired

Select the color and gender matching your OEM A/C harness connector.

Installation Steps

1. Discharge the A/C system before working near refrigerant lines (if required)
2. Locate the A/C pressure sensor connector on the high or low pressure line
3. Release the locking tab and unplug the original connector
4. Transfer terminals to the new housing or splice in the pre-wired variant
5. Reconnect and verify A/C compressor engagement and pressure sensor readings

Frequently Asked Questions

Q: What fault codes indicate a failed A/C pressure sensor connector?
A: Common codes include P0530 (A/C refrigerant pressure sensor circuit), P0531–P0533 (A/C pressure sensor range/performance), and B1200-series A/C system faults.

Q: How do I know if I need Brown or Grey housing?
A: Check the color of your existing OEM A/C pressure sensor connector housing. Brown and Grey variants have the same pin layout but different housing colors for circuit identification.

Q: Are terminals included?
A: Yes, terminals are included with all variants.

Compatible Applications

• A/C refrigerant high-pressure sensor connector
• A/C low-pressure switch harness
• Climate control pressure transducer wiring
• Universal 4-pin A/C pressure sensor applications (Brown/Grey housing)