Just to set the record straight.  This doesn't always just apply to the code "31" mentioned in the TSB.  I believe that this will possibly solve other issues as well.

Begin TSB
2.0L CHECK ENGINE LIGHT ON - FLASH CODE 31
TECHNICAL SERVICE BULLETIN
Reference Number(s): 18-02-95, Date of Issue: February 3, 1995
Superceded Bulletin(s): 18-21-94
CHECK ENGINE LIGHT ON "EVAP PURGE FLOW MONITOR FAILURE" - FLASH CODE 31
Model(s): 1995 Chrysler (FJ) Sebring

1995 Dodge (FJ) Avenger

1995 Eagle (FJ) Talon

Group: Vehicle Performance

Bulletin No.: 18-02-95

Effective Date: February 3, 1995

NOTE: This bulletin applies to vehicles equipped with a 2.0L DOHC non-turbo engine and manual transaxle built on or after September 10, 1994 (MDH 09-10-XX) with Powertrain Control Module P/N 5269653 or 5269656, or on vehicles built from June 16, 1994 to September 10, 1994 and had the PCM replaced using bulletin 18-21-94. 


SYMPTOM/CONDITION
Check Engine Light is on, Diagnostic Trouble Code "Evap Purge Flow Monitor Failure" and/or Flash Code 31 is set in the absence of a short or open in the solenoid circuit.

DIAGNOSIS
Using the Mopar Diagnostic System (MDS) or the Scan Tool (DRB III) and the appropriate Diagnostic Procedures, verify that all engine systems are functioning correctly. If Diagnostic Trouble Codes (DTC's) other than 31 are present, record them on the repair order for future reference and repair as necessary.

Verify that the Purge System is functioning properly. Disconnect the purge solenoid hose at the vapor canister. The line should be free of carbon pellets (a light amount of dust is normal). Start the engine. After about 90 seconds, the Duty Cycle Purge Valve should start to cycle. At the open end of the hose, one should feel a steady stream of brief vacuum pulses in response to the pulsing of the valve. This is normal and the purge system is functioning properly. If only code 31 is present, proceed with the following repair.

EQUIPMENT/PARTS REQUIRED
Part Number  Part Name  Qty. 
CH6000  Scan Tool (DRB III )  1 
CH7035  General Purpose Interface Bus Cable (GIB)  1 
CH7010  J1962/MMC Cable  1 
4669020  Label - Authorized Software Update  1 
4275086  Label - Authorized Modification  1 


REPAIR PROCEDURE
This bulletin involves selectively erasing and reprogramming the Powertrain Control Module with new software (calibration change).

NOTE: MDS and DRB III are required to perform the following repair. MDS must be operating with release 16 or higher installed. 


Connect the MDS (Mopar Diagnostic System) and DRB III (Scan Tool) to the vehicle and power them up.
Use the arrow keys and select #2 MDS DIAGNOSTIC on the DRB III MAIN MENU Screen.
Use the arrow keys and select DIAGNOSTIC MENU or the MDS, then press NEXT MENU.
Use the arrow keys and select CONTROLLER PROGRAMMING on the MDS, then press NEXT MENU.
Use the arrow keys and select PROGRAM CONTROLLER PART on the MDS, then press NEXT MENU.
Follow the steps presented on the MDS and DRB III which will allow the DRB III to obtain the current part number of the controller.
The MDS will display the part number of the controller on the vehicle and the appropriate replacement part number, then press NEXT MENU to begin programming.
If the controller on the vehicle has already been updated or programmed, a NO UPDATES AVAILABLE message will be displayed. Check the part number of the controller on the vehicle and compare it to the part number displayed. If the controller has already been updated, proceed to step 9.

The MDS and DRB III will prompt the operator for any action needed during the remainder of the programming process.
NOTE: The following steps are required by law 


Type the necessary information on the "Authorized Software Update label, P/N 4669020. See Fig. 1 . Attach the label to the PCM and cover the label with the clear plastic overlay.
Fig. 1: Authorized Software Update Label

Type the necessary information on he Authorized Modification Label shown in Fig. 2 and attach the label near the VECI Label.
Fig. 2: Authorized Modifications Label

WARRANTY INFORMATION
POLICY: Reimbursable within the provisions of the warranty.

LABOR OPERATION NO: 08-19-41-94

TIME ALLOWANCE: 0.5 Hrs.

FAILURE CODE: FM - Flash Module

End TSB

And here are what the labels look like if you have already recieved the update.