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.
2011 Ford Fiesta L4-1.6LFACTORY OEM SERVICE PROCEDURE
Computers and Control Systems: Technical Service Bulletins
- Customer Interest
- Electrical - Wrench Lamp ON, DTCs P2126, P2127, P2138
- Engine Controls - MIL ON, DTC P0456 Stored In Memory
- Electrical - MIL ON, DTC U029F, No Crank, Fuse F27 Open
- A/T - Grind/Rattle In 2nd and 4th/Reverse Gears
- A/T, Engine Controls - MIL ON/DTC's Set/TCS Lamp ON
- Engine Controls - Starting/A/T Engagement Issue/MIL/DTCs
- Electrical - MIL ON/DTC U029F/No Crank Condition
- Engine, A/T Controls - Harsh 1-2 Shifts
- A/T - Rattle/Grinding Noise In Reverse
- Engine - Slow Return To Idle
- Engine Controls - Rolling Idle At High Altitude/Temps.
- Locks - Autolock(R) Function Non Operational
- A/T - Grind/Rattle Noise In 2nd, 3rd, 4th/5th Gear
- ASMT Controls - Hesitation/Harsh 1-2 Shifts
- By Symptom
- Abnormal wear/deterioration
- Customer Interest
- Electrical - Wrench Lamp ON, DTCs P2126, P2127, P2138
- Engine Controls - MIL ON, DTC P0456 Stored In Memory
- Electrical - MIL ON, DTC U029F, No Crank, Fuse F27 Open
- A/T - Grind/Rattle In 2nd and 4th/Reverse Gears
- A/T, Engine Controls - MIL ON/DTC's Set/TCS Lamp ON
- Engine Controls - Starting/A/T Engagement Issue/MIL/DTCs
- Electrical - MIL ON/DTC U029F/No Crank Condition
- Engine, A/T Controls - Harsh 1-2 Shifts
- A/T - Rattle/Grinding Noise In Reverse
- Engine - Slow Return To Idle
- Engine Controls - Rolling Idle At High Altitude/Temps.
- Locks - Autolock(R) Function Non Operational
- A/T - Grind/Rattle Noise In 2nd, 3rd, 4th/5th Gear
- ASMT Controls - Hesitation/Harsh 1-2 Shifts
- Driveability
- Hard Shifting
- Hard shifting/Stiff clutch
- Noise
- Starting problems
- All Technical Service Bulletins
- Electrical - Wrench Lamp ON, DTCs P2126, P2127, P2138
- Engine Controls - MIL ON, DTC P0456 Stored In Memory
- Electrical - MIL ON, DTC U029F, No Crank, Fuse F27 Open
- A/T - Grind/Rattle In 2nd and 4th/Reverse Gears
- A/T, Engine Controls - MIL ON/DTC's Set/TCS Lamp ON
- Engine Controls - Starting/A/T Engagement Issue/MIL/DTCs
- Electrical - MIL ON/DTC U029F/No Crank Condition
- Engine, A/T Controls - Harsh 1-2 Shifts
- A/T - Rattle/Grinding Noise In Reverse
- Emissions - MIL ON/DTC's P0455/P0456 Set
- Engine - Slow Return To Idle
- Engine Controls - Rolling Idle At High Altitude/Temps.
- Locks - Autolock(R) Function Non Operational
- A/T - Grind/Rattle Noise In 2nd, 3rd, 4th/5th Gear
- ASMT Controls - Hesitation/Harsh 1-2 Shifts
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.