Ford 4-Pin A/C Pressure Sensor Connector – OEM E-3938 / WPT-182 / 1U2Z-14S411-AUA
Direct OEM-specification replacement for the Ford 4-pin A/C (air conditioning) pressure sensor connector. Cross-references OEM part numbers E-3938, E-3938-001, WPT-182, and 1U2Z-14S411-AUA. Used in the A/C high-side and low-side pressure sensor harness across Ford and Lincoln platforms. Available bare or with 15cm pre-wired leads.
| OEM Number | Type |
|---|---|
| E-3938 / E-3938-001 | Ford connector assembly |
| WPT-182 | Ford pigtail assembly reference |
| 1U2Z-14S411-AUA | Ford wiring assembly number |
| Pin | Function | Failure Symptom if Corroded |
|---|---|---|
| 1 | +5V reference voltage from PCM | P0530 — A/C pressure sensor circuit malfunction |
| 2 | Signal output to PCM | A/C compressor not engaging, P0531 / P0532 |
| 3 | Signal ground / return | P0533 — A/C pressure sensor circuit high |
| 4 | Shield / additional ground | Erratic A/C pressure reading |
| Attribute | Detail |
|---|---|
| Pin Count | 4-Pin |
| OEM Part Numbers | E-3938 / WPT-182 / 1U2Z-14S411-AUA |
| Housing Material | Nylon (PA66), waterproof sealed |
| Wire Option | Bare connector / 15cm pre-wired leads |
| Application | A/C high-side / low-side pressure sensor harness |
| Compatible Brands | Ford, Lincoln |
| Code | Description |
|---|---|
| P0530 | A/C refrigerant pressure sensor — circuit malfunction |
| P0531 | A/C refrigerant pressure sensor — range/performance |
| P0532 | A/C refrigerant pressure sensor — circuit low |
| P0533 | A/C refrigerant pressure sensor — circuit high |
Q: My Ford A/C blows warm air and has P0530 — is it the connector?
A: P0530 means the PCM cannot read the A/C pressure sensor signal. A corroded connector causes the PCM to disable the A/C compressor as a safety measure (to prevent compressor damage from unknown refrigerant pressure). Inspect the 4-pin connector before recharging the A/C system or replacing the pressure sensor.
Q: Are terminals included?
A: Yes, terminals are included with all variants.
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4 Pin Connectors
