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| DIAGNOSTIC TROUBLE CODE (DTC) P0325 – KNOCK SENSOR CIRCUIT MALFUNCTION – VEHICLES WITH 2.5L ENGINE |
Diagnostic Trouble Code (DTC) P0325 (failed knock sensor circuit) may appear during KOER, but further testing determines the knock sensor to be satisfactory.
This may occur due to Powertrain Control Module (PCM) strategy.
ACTION:
Reprogram the PCM.
SERVICE PROCEDURE
- Retrieve, then clear DTCs from PCM continuous memory.
- If a DTC P0325 appears during KOER, perform normal diagnostics in accordance with the 1999 Powertrain Control/Emissions Diagnosis (PC/ED) Service Manual for DTC P0325.
- If no problem was found after performing Step 2, no other DTCs were present, but the concern is still present, reprogram the PCM with the latest level calibration using Service Bay Diagnostic System (SBDS) or New Generation Star (NGS) Tester. Refer to the following PCM Reprogramming Information Chart to identify the appropriate calibration.
| PCM REPROGRAMMING INFORMATION | ||
|---|---|---|
| Application | Tear Tag Number | NGS/SBDS Qualifier |
| 2.5L Contour/Mystique | JTAx | 9LCM-AC CALIBRATION |
| 2.5L Contour/Mystique | DARx | 9LCM-BC CALIBRATION |
| 2.5L Cougar | EDLx | 9LCM-AD CALIBRATION |
| 2.5L Cougar | FWFx | 9LCM-BD CALIBRATION |
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
