PINPOINT TEST DW: Heated Oxygen Sensor (HO2S): Introduction
WARNING: This page is about a different variant/trim than selected.
WARNING:
WHILE CONDUCTING TESTS ON A HOT ENGINE TAKE ALL SAFETY PRECAUTIONS TO PREVENT SKIN CONTACT WITH HOT ENGINE COMPONENTS. FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN PERSONAL INJURY.
This pinpoint test is intended to diagnose the following:
- HO2S/O2S (9F472)
- HO2S/O2S (9G444)
- harness circuits: HO2S, HO2S Heater, VPWR, and SIGRTN
- powertrain control module (PCM) (12A650)
Heated Oxygen Sensor-Front (HO2S-Front) Connector
The pin numbering for the connector is in reference to the connector lock tab. Not all connector key combinations are shown.
Heated Oxygen Sensor-Rear (HO2S-Rear) Connector
The pin numbering for the connector is in reference to the connector lock tab. Not all connector key combinations are shown.
Powertrain Control Module (PCM) Connector
For PCM connector views or reference values, refer to REFERENCE VALUES article.
| Vehicle | Connector | Pin | Circuit |
|---|---|---|---|
| E-Series 4.6L | 190-PIN | B30, B67, B68 | VPWR |
| T16 | HO2S12 | ||
| T18 | HTR12 | ||
| T20 | HO2S22 | ||
| T48 | HTR22 | ||
| T40 | SIGRTN | ||
| E-Series 6.8L | 170 PIN | B35, B36 | VPWR |
| E28 | HO2S11 | ||
| E69 | HTR11 | ||
| E29 | HO2S21 | ||
| E70 | HTR21 | ||
| T24 | HO2S12 | ||
| T47 | HTR12 | ||
| T25 | HO2S22 | ||
| T48 | HTR22 | ||
| B41, E58, T41 | SIGRTN | ||
| E-Series 5.4L | 190-PIN | B30, B67, B68 | VPWR |
| T16 | HO2S12 | ||
| T18 | HTR12 | ||
| T20 | HO2S22 | ||
| T48 | HTR22 | ||
| B58, T40 | SIGRTN | ||
| Edge 3.5L, Edge 3.7L, Explorer 3.5L, MKX | 190-PIN | B67, B68 | VPWR |
| T29 | HO2S12 | ||
| T49 | HTR12 | ||
| T40 | HO2S22 | ||
| T48 | HTR22 | ||
| E49 | SIGRTN | ||
| Edge 2.0L | 154 PIN | B5, B6 | VPWR |
| B48 | HO2S12 | ||
| B20 | HTR12 | ||
| E34 | SIGRTN | ||
| Escape 3.0L, F-150 3.7L, Mustang 3.7L | 190-PIN | B67, B68 | VPWR |
| T29 | HO2S12 | ||
| T49 | HTR12 | ||
| T40 | HO2S22 | ||
| T48 | HTR22 | ||
| T41 | SIGRTN | ||
| Escape 2.5L Manual Transmission, Fusion 2.5L Manual Transmission | 190-PIN | B67, B68 | VPWR |
| E8 | HO2S11 | ||
| E69 | HTR11 | ||
| T29 | HO2S12 | ||
| T49 | HTR12 | ||
| E49, T41 | SIGRTN | ||
| Escape 2.5L Automatic Transmission, Fusion 2.5L Automatic Transmission | 190-PIN | B67, B68 | VPWR |
| T29 | HO2S12 | ||
| T49 | HTR12 | ||
| T41 | SIGRTN | ||
| Explorer 2.0L, Focus | 154 PIN | B5, B6 | VPWR |
| B48 | HO2S12 | ||
| B20 | HTR12 | ||
| B21 | SIGRTN | ||
| F-150 3.5L | 198 PIN | B101, B102, B103 | VPWR |
| B57 | HO2S12 | ||
| B1 | HTR12 | ||
| B56 | HO2S22 | ||
| B61 | HTR22 | ||
| B37, B38 | SIGRTN | ||
| F-Series Super Duty 6.8L, Motorhome / Stripped Chassis / Step Van | 190-PIN | B67, B68 | VPWR |
| T30 | HO2S12 | ||
| T48 | HTR12 | ||
| T26 | SIGRTN | ||
| Fiesta | 128 PIN | B11, B12, B8 | VPWR |
| E21 | HO2S11 | ||
| E47 | HTR11 | ||
| E20 | HO2S12 | ||
| E35 | HTR12 | ||
| E8, E9 | SIGRTN | ||
| Flex 4V 3.5L, MKS 3.7L, MKT 3.7L, Taurus 4V 3.5L | 190-PIN | B51, B52, B53 | VPWR |
| E23 | HO2S12 | ||
| E1 | HTR12 | ||
| E24 | HO2S22 | ||
| E2 | HTR22 | ||
| E58 | SIGRTN | ||
| Flex GTDI 3.5L, MKS 3.5L, MKT 3.5L, Taurus GTDI 3.5L | 190-PIN | B35, B36, B51 | VPWR |
| T29 | HO2S12 | ||
| T48 | HTR12 | ||
| T40 | HO2S22 | ||
| T49 | HTR22 | ||
| B56 | SIGRTN | ||
| Fusion 3.0L | 190-PIN | B67, B68 | VPWR |
| T29 | HO2S12 | ||
| T49 | HTR12 | ||
| T40 | HO2S22 | ||
| T48 | HTR22 | ||
| E49, T41 | SIGRTN | ||
| Fusion 3.5L, MKZ | 140 PIN | B51, B52 | VPWR |
| E28 | HO2S11 | ||
| E69 | HTR11 | ||
| E29 | HO2S21 | ||
| E70 | HTR21 | ||
| E3 | HO2S12 | ||
| E23 | HTR12 | ||
| E4 | HO2S22 | ||
| E24 | HTR22 | ||
| E58 | SIGRTN | ||
| Transit Connect | 190-PIN | B67, B68 | VPWR |
| E11 | HO2S11 | ||
| E52 | HTR11 | ||
| T16 | HO2S12 | ||
| T18 | HTR12 | ||
| T40 | SIGRTN | ||
| All other vehicles | 190-PIN | B67, B68 | VPWR |
| T18 | HO2S12 | ||
| T47 | HTR12 | ||
| T27 | HO2S22 | ||
| T49 | HTR22 | ||
| T26 | SIGRTN |