Illuminated MIL With DTC P203B - 2016-2017 Ford F-650, F-750

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NHTSA ID Number: 10201066

Manufacturer Communication Number: TSB 21-2287

Summary

This article supersedes TSB 17-0068 to update the Service Procedure and Parts List. Some 2016-2017 F-650/F-750 vehicles equipped with a 6.7L diesel engine and built on or before 21-Aug-2017 may exhibit an illuminated malfunction indicator lamp (MIL) with diagnostic trouble code (DTC) P203B. This may be due to a low voltage condition during engine cranking. To correct this condition, reflash the diesel exhaust fluid (DEF) reductant level sensor/quality module using the Urea Sensor Reprogramming tool.

This bulletin supersedes 17-0068. Reason for update: New Part/Procedure For Same Condition

Model:

Ford

2016-2017 F-650/F-750

Engine: 6.7L

Summary

This article supersedes TSB 17-0068 to update the Service Procedure and Part List.

Issue: Some 2016-2017 F-650/F-750 vehicles equipped with a 6.7L diesel engine and built on or before 21-Aug-2017 may exhibit an illuminated malfunction indicator lamp (MIL) with diagnostic trouble code (DTC) P203B. This may be due to a low voltage condition during engine cranking. To correct this condition, reflash the diesel exhaust fluid (DEF) reductant level sensor/quality module using the Urea Sensor Reprogramming tool.

Action: Follow the Service Procedure steps to correct the condition on vehicles that meet all of the following criteria:

2016-2017 F-650/F-750
6.7L diesel
Built on or before 21-Aug-2017
Illuminated MIL with DTC P203B

Special Tool(s)

Urea Sensor Reprogramming Tool

418-665

Service Procedure

1. Turn the vehicle ignition to the OFF position.

2. Locate the reductant tank on the side of the vehicle.

3. Remove the 4 skid plate retainers and then remove the skid plate. Do not remove the reductant tank. (Figure 1)

Figure 1

4. Locate the 4 pin electrical connector for the reductant level sensor/quality module (part of the reductant tank). (Figure 2)

Figure 2

5. Carefully unlatch the white secondary lock, depress the tab and remove the connector from the reductant level sensor/quality module. (Figure 3)

Figure 3

6. Is part number GC4A-5J242-AD printed on the component side of the reductant level sensor/quality module 4 pin electrical connector?

(1). Yes – proceed to Step 7.

(2). No – this article does not apply. Refer to the Powertrain Control and Emissions Diagnosis (PC/ED) Manual for additional diagnostics.

7. Connect the Urea Sensor Reprogramming tool into the reductant level sensor/quality module on the reductant tank. (Figures 4-5)

NOTE: When using the Urea Sensor Reprogramming tool for the first time, remove the plastic tab from the battery compartment to power the tool.

Figure 4

Figure 5

8. Once the Urea Sensor Reprogramming tool is connected, move the toggle switch to the ON position. The top green light emitting diode (LED) will illuminate and the software reprogramming process for the reductant level sensor/quality module will begin automatically. (Figure 6)

Figure 6

9. Allow up to 60 seconds for the tool to complete reprogramming the reductant level sensor/quality module.

10. Does the bottom LED on the Urea Sensor Reprogramming tool illuminate green? (Figure 7)

Figure 7

(1). Yes – the reductant level sensor/quality module has been successfully reflashed. Disconnect the Urea Sensor Reprogramming tool from the reductant level sensor/quality module and reconnect the 4 pin electrical connector from the wire harness. Re-install the reductant tank skip plate on to the reductant tank. Repair is complete.

(2). No – proceed to Step 11.

11. Is the bottom LED illuminated red?

(1). Yes – make sure the Urea Sensor Reprogramming tool is securely connected to the urea sensor and turn the reprogramming tool off then turn it back on again to restart the reprogramming process. Allow up to 60 seconds for the tool to complete reprogramming the reductant level sensor/quality module. Return to Step 10.

(2). No – proceed to Step 12.

12. Are both the red LED and green LEDs flashing?

(1). Yes – replace the 9 volt battery in the Urea Sensor Reprogramming tool. Make sure the Urea Sensor Reprogramming tool is securely connected to the urea sensor and turn the reprogramming tool off then turn it back on again to restart the reprogramming process. Allow up to 60 seconds for the tool to complete reprogramming the reductant level sensor/quality module. Return to Step 10.

(2). No – the reductant level sensor/quality module has been successfully reflashed. Disconnect the Urea Sensor Reprogramming tool from the reductant level sensor/quality module and reconnect the 4-way connector from the wire harness. Install the stone shield on the tank assembly using the 3 push pins. Repair is complete.

4 Affected Products

Vehicles


MAKE	MODEL	YEAR
FORD	F-650 SD	2016-2017
FORD	F-750 SD	2016-2017

1 Associated Document

Manufacturer Communications

21-2287
30 August 2021

https://www.nhtsa.gov/recalls?nhtsaId=10201066

MC-10201066-0001.pdf 294.351KB

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