rcrasor Report post Posted September 29, 2017 We just did a 200 mile run in our 2014 Thor Mortorcoach and when we shut off the engine we heard a loud piercing whistle sound. Checking the print out on the steering column, it showed "Check Engine NO J1939 Data". Does anyone know what this means??? After restarting the engine 2 times, the high-pitched sound stopped, but the error code still shows on the screen. Anyone know???? Thanks! Share this post Link to post Share on other sites
manholt Report post Posted September 29, 2017 You should have a green Cummins booklet. The codes are towards the back. If you can't find the code, call Cummins or Thor Tech dept. Did you check your coolant? Share this post Link to post Share on other sites
rcrasor Report post Posted September 29, 2017 I wish. We didn't get any booklets or manuals with our Coach and have been trying to get everything we can as we encounter issues. Very long story about a difficult dealership for another time. But we did call Cummins and they said take the unit into the nearest Cummins dealer. UGH. We'll try Thor next. Just thought someone might know; and we'll check the coolant too. Thought we had, but will do again. Diesels are new to me so this one issue will teach us alot. Thanks for the assiatnce. Share this post Link to post Share on other sites
elkhartjim Report post Posted September 29, 2017 You can call Cummins Customer Assistance @ 1-800-343-7357 or Freightliner @ 1-800-385-4357. Freightliner has given me fault code help several times. Share this post Link to post Share on other sites
dickandlois Report post Posted October 2, 2017 On 9/29/2017 at 1:51 PM, rcrasor said: We just did a 200 mile run in our 2014 Thor Mortorcoach and when we shut off the engine we heard a loud piercing whistle sound. Checking the print out on the steering column, it showed "Check Engine NO J1939 Data". Does anyone know what this means??? After restarting the engine 2 times, the high-pitched sound stopped, but the error code still shows on the screen. Anyone know???? Thanks! "Check Engine NO J1939 Data" The J1939 data bus supplies all the communications between the different modules installed on the chassis. Loose, corroded or damaged connection will corrupt the system data information. Are all the instrument panel gauges and transmission panel working normally? Might want to have Cummins run a test on the data link. Rich. Share this post Link to post Share on other sites
