Vehicle applicability: This diagnostic supplement covers multiple Ford vehicles and engines. Follow the application named in the source below. Some references apply to vehicles other than Mustang.
( + ) Universal HO2S Connector, Harness Side | ( - ) PCM Connector, Harness Side |
|---|---|
UO2SPCT | UO2SPCT |
Is the resistance less than 5 ohms?
Yes | No |
|---|---|
For DTC P2626 or P2629 or symptoms without DTCs, GO to DZ27 . For all others, GO to DZ24 . | REPAIR the open circuit. Clear the PCM DTCs. REPEAT the self-test. |
DZ24 CHECK THE UO2SPCT CIRCUIT FOR A SHORT TO GROUND
• Measure the resistance between:
( + ) PCM Connector, Harness Side | ( - ) |
|---|---|
UO2SPCT | Ground |
Is the resistance greater than 10K ohms?
Yes | No |
|---|---|
GO to DZ25 . | REPAIR the short circuit. Clear the PCM DTCs. REPEAT the self-test. |
DZ25 CHECK THE UO2SPCT CIRCUIT FOR A SHORT TO VOLTAGE
• Ignition ON, engine OFF.
• Measure the voltage between:
( + ) Universal HO2S Connector, Harness Side | ( - ) |
|---|---|
UO2SPCT | Ground |
Is any voltage present?
Yes | No |
|---|---|
REPAIR the short circuit. Clear the PCM DTCs. REPEAT the self-test. | GO to DZ26 . |
2016 Mustang workshop publication supplied to Mustang Atlas. Original technical text and illustrations; HTML formatting by Mustang Atlas. Source page numbering is retained for traceability. Follow the configuration, revision, warnings, and cross-references in the material. About this edition.