Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Output Shaft Speed (OSS) Sensor
2012 Ford Fiesta L4-1.6LSECTION Output Shaft Speed (OSS) Sensor
Output Shaft Speed (OSS) Sensor
Removal
1. With the vehicle in NEUTRAL, position it on a hoist.
2. Remove and discard the heat tape from the Output Shaft Speed (OSS) sensor and electrical connector.
3. Disconnect the OSS (Output Shaft Speed) sensor electrical connector.
4. Remove the OSS (Output Shaft Speed) sensor bolt and OSS (Output Shaft Speed) sensor.
Installation
1. Inspect the transaxle case bore. Clean and/or repair as needed.
2. Inspect the OSS (Output Shaft Speed) sensor for debris or damage. Clean or replace the OSS (Output Shaft Speed) as needed.
3. NOTE: If installing the old OSS (Output Shaft Speed) sensor, install a new O-ring.
Apply a small amount of transmission fluid to the O-ring and install the OSS (Output Shaft Speed) sensor and the OSS (Output Shaft Speed) sensor bolt.
- Tighten to 10 Nm (89 lb-in).
4. Connect the OSS (Output Shaft Speed) sensor electrical connector.
5. Thoroughly clean the OSS (Output Shaft Speed) sensor, electrical connector and wire.
6. Install new heat tape on the OSS (Output Shaft Speed) sensor as shown in the preceding steps.
7. Remove the heat tape backing only from this location first.
8. Wrap the heat tape around the OSS (Output Shaft Speed) sensor wiring harness.
9. Remove the heat tape backing from the rest of the heat tape and wrap it around the OSS (Output Shaft Speed) sensor and sticking the ends together.
10. Fold the remaining portion of the heat tape and crimp around the edge starting from the sensor portion moving around.
RENDER: 1.0x
NO RELATED
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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.