I have a Hp Printer Mfp4345 with error message 13.01.00 I tried changing Rollers,and all the sensors and paper path is in good condition..I noticed that the tray is not lifting and i even replaced Lifting motor..please help me..

Check* was paper physical length is matching to selected length? *check Maintenance kit interval. * check which tray you are getting this message? tray/tray 2 check pick up rollers are warn out? * clean paper path sensors.

This is a common problem with this machine and more than likely the scanner will need to be replaced. You should try calling HP and see if they will cover it since it is a common problem... but before that try hard reset on ur printer 
good luck....

Thank you contacting FixYa for your printer inquiry.
This error is associated with either a sheet of paper blocking the paper path or a partial piece of paper that blocks path or trips a sensor. The printer will usually throw up a error code 13.XX on the display and the XX is a number that will indicate where in the paper path this error most probably occurred. Just follow the steps for your error on the below chart.
This link will take you to the user guide which will be helpfull identifying components and providing guidelines for most of the helpful hints and things you will need to know about this printer.
http://bizsupport2.austin.hp.com/bc/docs/support/SupportManual/c00218691/c00218691.pdf
Locate your error on the matrix below and follow the steps. Comment back if you need more help. Thank you again for contacting FixYa.
TF
HP Laserjet Error Codes 0 - 19 Message on printer Display Panel What it means. What to do. 13.XX PAPER JAM [LOCATION] Media is jammed at the specified location (and possibly at other locations). If the message persists after all jams have been cleared, a sensor or sensor lever might be stuck or broken. For all jam messages, do the following: 1. Remove jammed print media from the specified location. Check the entire paper path for other pieces of media in the path. 2. Open and close the top cover to clear the message. 3. Check sensors and flags in the paper path for proper operation. 3.0 PAPER JAM [LOCATION] A non-specific paper jam occurred. 1. Remove jammed media from the specified location. 2. Verify the paper tray is fully closed. 3. Inspect and/or replace the feed and separation rollers. 4. Ensure there is no obstruction in the path, such as a torn piece of paper. 5. Open and close the top cover to clear the message. 6. Check sensors and flags for proper operation. 13.1 PAPER JAM OPEN INPUT TRAYS Paper-delay jam at paperfeed area. 1. Ensure that paper trays are loaded and adjusted properly so media can feed from the tray. It might be necessary to reduce the stack height of media in the tray. 2. Check the input area for obstructions such as media in the path. Also check to see if the registration assembly damaged or unseated. 3. Replace any defective sensors or flags. 4. Verify the media meets the specifications. 5. Check the pickup feed and separation rollers for unusual wear. Replace as needed. 6. Rotate the media in the input tray by 180° and/or turn it over On NX engines this is most likely the fuser flag or the ACPM. The ACPM has a photosensor hard-wired to the back of it. 13.10 PAPER JAM CHECK DUPLEXER Jam at duplexer. 1. Check the duplexer and the rear area of the printer for obstructions or damage. 2. Check the duplexer for proper operation. Replace the duplexer if a sensor is defective. On a 5si, 8000, or 8100 series laserjet a Duplex Jam can be caused by a tray 2 and 3 feed assembly failure. 13.14 For Laserjet 5si. This error is caused by a defective paper control PCA Replace paper control PCA. 13.2 PAPER JAM OPEN INPUT TRAYS Paper-stopped jam at paper-feed area. 1. Check the input area for obstructions such as paper in the path. Also check to see if the registration assembly is damaged or if the transfer roller is out of place. 2. Replace any defective sensors or flags. 3. Ensure the media does not exceed the maximum length. 4. If multiple sheets are feeding, it might be necessary to fan the media and reduce the stack height. Also, replace separation pad. 5. Verify that the fuser is properly installed. On NX engines this is an input jam. 13.20 PAPER JAM CHECK REAR DOOR Media stopped in the paper path during power on or when the top door was closed. 1. Remove all media in the paper path, and then open and close the top cover. 2. If the message persists after all media is removed: Check if media is jammed in the prefeed area. Replace any defective sensors or flags 13.21 DOOR OPEN JAM The top cover was open while printing. 1. Clear the jam and close the top door. 2. If the message persists, check the top door switch for proper operation. 13.5 PAPER JAM CHECK REAR DOOR Paper-delay jam at fuser. 1. Check the transfer roller and small media belt to ensure they are operating and can feed print media. 2. Check the paper path for obstructions at the transfer roller, toner cartridge, paper feed assembly, and fuser. 3. Replace any defective sensors or flags. 4. Turn the media stack over and/ or rotate it by 180° in the input tray. If still persists - replace fuser, then DC controller. 13.6 PAPER JAM CHECK REAR DOOR Paper-stopped jam at fuser. 1. Check the paper path for obstructions at the fuser and output/delivery area. 3. Replace any defective sensors or flags. 13.99 PAPER JAM [LOCATION] A non-specific paper jam occurred. 1. Remove jammed media from the specified location. 2. Verify the paper tray is fully closed. 3. Inspect and/or replace the feed and separation rollers. 4. Ensure there is no obstruction in the path, such as a torn piece of paper. 5. Open and close the top cover to clear the message. 6. Check sensors and flags for proper operation

This error message is displayed by the printer when paper is jammed in one or more locations. In such a case, users are recommended to remove the jammed paper from the specified location. The entire paper path must be checked for any pieces of paper. To stop the message, open and close the top most cover of the printer. Lastly, verify the flags and the sensors. If the problem persists, the cause of the error message could be a broken sensor or sensor lever.get more help and information for hp printer support hope this helps you.

Thanks
Michel

paper jam on hp laserjet

This error message is displayed by the printer when paper is jammed in one or more locations. In such a case, users are recommended to remove the jammed paper from the specified location. The entire paper path must be checked for any pieces of paper. To stop the message, open and close the top most cover of the printer. Lastly, verify the flags and the sensors. If the problem persists, the cause of the error message could be a broken sensor or sensor lever.

If message in display panel reads [13.XX PAPER JAM [LOCATION]]Media is jammed at the specified location (and possibly at other locations). If the message persists after all jams have been cleared, a sensor or sensor lever might be stuck or broken.
Soln.
For all jam messages, do the following: 1. Remove jammed print media from the specified location. Check the entire paper path for other pieces of media in the path. 2. Open and close the top cover to clear the message. 3. Check sensors and flags in the paper path for proper operation.

For message 3.0 PAPER JAM [LOCATION]
means A non-specific paper jam occurred.
Soln
1. Remove jammed media from the specified location. 2. Verify the paper tray is fully closed. 3. Inspect and/or replace the feed and separation rollers. 4. Ensure there is no obstruction in the path, such as a torn piece of paper. 5. Open and close the top cover to clear the message. 6. Check sensors and flags for proper operation.

For more help check yhis site

http://www.printertechs.com/tech/error-codes/error-codes-0-19.php

If the paper jam message wont clear, there is something blocking the sensor in the paper path leading the machine to think there is paper. Check the paper path for torn paper. Locate the paper switch/sensor and make sure it is clean and unobstructed.
If the jam message clears but when you go to print it comes back, you may have dirty feed rollers. Clean the rollers with a mild detergent or soapy water and a clean cloth. Do not use alcohol, this will dry out the rollers and shorten their life.

send it for repairs....

Error message means "Media is jammed at the specified location (and possibly at other locations). If the message persists after all jams have been cleared, a sensor or sensor lever might be stuck or broken."

For all jam messages, do the following: 1. Remove jammed print media from the specified location. Check the entire paper path for other pieces of media in the path. 2. Open and close the top cover to clear the message. 3. Check sensors and flags in the paper path for proper operation.

Try cleaning your feed rollers...
There are two types of rollers in printers: hard plastic and rubber. Plastic rollers can be cleaned with alcohol (isopropyl). Rubber rollers can be cleaned with a rubber roller cleaner and restorer like the one in the link (you can find other brands, but make sure its for rubber).

http://www.lmcomp.com/80008.html