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| 1.6L ENGINE – ILLUMINATED MALFUNCTION INDICATOR LAMP (MIL) – DTC P0420 |
| FORD: | 2011-2013 Fiesta |
2011-2013 Fiesta vehicles equipped with a 1.6L engine may exhibit an illuminated MIL with diagnostic trouble code (DTC) P0420.
SERVICE PROCEDURE
- Using Integrated Diagnostic System (IDS) tool or equivalent Scan Tool, check the catalyst monitor bank 1 oxygen storage capacity reading. When using the IDS to obtain mode 6 data. Select the following:
- Toolbox
- Powertrain
- OBD Test Modes
- Mode 6 On-Board Test Results
- Locate catalyst monitor bank 1 oxygen storage capacity value
- Is the catalyst monitor bank 1 oxygen storage capacity value 205 or lower?
- Yes – proceed to Step 4.
- No – proceed to Steps 3.
- Replace the catalytic converter.
- Reprogram the powertrain control module (PCM) to the latest calibration using IDS or Ford J2534 release 95.05 or higher. Make sure you are connected to the internet when entering module programming to obtain the latest updates. Calibration files may also be obtained at www.motorcraftservice.com.
NOTE: If the transmission control module (TCM) calibration required an update when the PCM calibration was updated, perform the clutch adaptive learning procedure. Using IDS service tool or equivalent Scan Tool, select Powertrain, Transmission, Transmission Adaptive Learning and perform the Clutch Adaptive Learning.
| PART NUMBER | PART NAME |
|---|---|
AE8Z-5G232-A  |
Catalytic Converter |
| 2S6Z-9450-A |
Gasket – Flexible Pipe |
| W703662-S403 | Nut – Flexible Pipe (4 Req) |
| W500634-S442 | Bolt – Exhaust Manifold |
| W703662-S403 | Nuts – Exhaust Manifold (4 Req) |
| BE8Z-9448-D |
Gasket – Exhaust Manifold |
| W520103-S403 | Nuts – Flexible Pipe (2 Req) |
| XL-2 |
Motorcraft High Temperature Nickel Anti-Seize Lubricant |
| W715135-S440 |
Nut – Stabilizer Bar Link Upper |
W713640-S437 |
Nut – Wheel Hub |
| W709618-S442 | Bolt – Ball Joint |
| W520203-S442 |
Nut – Ball joint |
| W520102-S442 | Nut – Bearing Retainer Strap (2 Req) |
| YS4Z-3N324-AA | Strap – Bearing Retainer |
Service Information & Reprogramming
Software necessary to program electronic modules to the latest calibration level, perform module initialization (PATS), and set Programmable Parameters on Ford, Lincoln and Mercury vehicles.
Ford Module Programming (FMP) is a software application that allows subscribers to program electronic modules on Ford, Lincoln and Mercury vehicles. It can be used for:
- Reprogramming emission-related (OBDII) modules on some vehicles manufactured in 1995 and all vehicles manufactured from 1996 to the present
- Reprogramming or reconfiguring non-emission-related modules on many vehicles (UBP and MS-CAN not supported)
In addition, module initialization (PATS) functions such as Keycode Erase/Reprogram and PCM Parameter Reset can be done using this application.
J2534 Device using Ford Module Programming (FMP) can Reprogram and Configure most Modules.
Latest Calibration Information
Module Build Data (As-Built)
Use VIN to obtain As-Built data
