2014 Ford Focus Titanium, 4D Hatchback, Automatic DCT Trans, Gas/EthanolFACTORY OEM SERVICE PROCEDURE

PINPOINT TEST H: Fuel Control: Introduction: Notes

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 (9G444)
  • universal HO2S (9Y460)
  • fuel injectors (9F593)
  • harness circuits: HO2S12, HO2S22, HTR12, HTR22, SIGRTN, UO2SPC and VPWR
  • vacuum systems
  • PCM (12A650)

For additional information on heated oxygen sensor (HO2S), refer to CATALYST AND EXHAUST SYSTEMS .

Heated Oxygen Sensor Bank 1, Sensor 2 (HO2S12) Connector 

The pin numbering for the connector is in reference to the connector lock tab. Not all connector key combinations are shown.

Fig 1: Identifying Heated Oxygen Sensor Bank 1, Sensor 2 Connector Terminals
G09137500Courtesy of FORD MOTOR CO.
Vehicle Connector Pin Circuit
E-Series,
Fiesta TiVCT 1.6L,
Motorhome/Stripped Chassis/Step Van		 A 1
2
4
3		 HTR12
VPWR
SIGRTN
HO2S12
Escape 1.6L,
Fiesta GTDI 1.6L,
Transit Connect 1.6L		 B 2
1
3
4		 HTR12
VPWR
SIGRTN
HO2S12
F-650/F-750 D 1
2
4
3		 HTR12
VPWR
SIGRTN
HO2S12
Fusion 1.5L E 2
1
3
4		 HTR12
VPWR
SIGRTN
HO2S12
All other vehicles C 2
1
3
4		 HTR12
VPWR
SIGRTN
HO2S12

Heated Oxygen Sensor Bank 2, Sensor 2 (HO2S22) Connector 

The pin numbering for the connector is in reference to the connector lock tab. Not all connector key combinations are shown.

Fig 2: Identifying Heated Oxygen Sensor Bank 2, Sensor 2 Connector Terminals
G09137511Courtesy of FORD MOTOR CO.
Vehicle Connector Pin Circuit
E-Series A 1
2
4
3		 HTR22
VPWR
SIGRTN
HO2S22
F-650/F-750 B 1
2
4
3		 HTR22
VPWR
SIGRTN
HO2S22
All other vehicles C 2
1
3
4		 HTR22
VPWR
SIGRTN
HO2S22
Fig 3: Identifying Universal HO2S Connector Terminals
G09137504Courtesy of FORD MOTOR CO.
Vehicle Connector Pin Circuit
Edge 3.5L,
Edge 3.7L,
Explorer 3.7L,
Explorer TiVCT 3.5L,
F-150 3.7L,
Flex TiVCT 3.5L,
MKS 3.7L,
MKT 3.7L,
MKX,
MKZ 3.7L,
Mustang 3.7L,
Taurus TiVCT 3.5L,
Taurus 3.7L		 A 1 UO2SPC
Escape 2.5L,
Fusion 2.5L,
Transit Connect 2.5L		 B 6 UO2SPC
All other vehicles C 1 UO2SPC
Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.

Shop Manual-Ready ToolsCompare Repair QuoteQuote Shield Pro

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

Rather have a pro handle this?

A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.

Comes to youSame-day available12-month warranty
Get a Free Quote

No obligation. See pricing before you book.