No complaints are listed for the 2015 Caterpillar CT660. NHTSA's API and bulk file list none in this build.
Data build 2026-10-08.
NHTSA lists this vehicle as CATERPILLAR CT660.
Model-generated complaint tags: No complaints are listed for tagging.
Recalls
See new recalls and investigations this week.
1 recalls.
Date: 2014-12-23. Systems: PARKING BRAKE.
Defect: Caterpillar Inc. (Caterpillar) is recalling certain model year 2015 CT660, and CT681 trucks manufactured July 28, 2014, to November 5, 2014. The affected vehicles may experience brake drag due to an improperly seated diaphragm in the brake chamber.
Consequence: Brake drag may result in a wheel end fire.
Remedy: Caterpillar will notify owners, and dealers will replace the brake actuators, free of charge. An interim letter was mailed to owners on March 18, 2015. A second notice will be mailed once parts become available. Owners may contact Caterpillar customer service at 1-309-675-5658.
Do not drive: No. Park outside: No.
Manufacturer communications
49 manufacturer communications.
Communications by system| System | Count |
|---|
| ENGINE | 19 |
|---|
| ELECTRICAL SYSTEM | 9 |
|---|
| POWER TRAIN | 6 |
|---|
| ENGINE AND ENGINE COOLING | 4 |
|---|
| EQUIPMENT | 4 |
|---|
| STRUCTURE | 2 |
|---|
| SUSPENSION | 2 |
|---|
| FUEL SYSTEM, GASOLINE | 1 |
|---|
10158770
Date: 2019-03-24. Type: Service Bulletin/Repair Instructions. Systems: EQUIPMENT.
Product Link models PL121/321s will stop sending data after April 6th, 2019. Date codes will appear as if coming from the past so the customer interface (UI) will not recognize those back dated messages and no data will appear in the UI.
10158771
Date: 2019-03-08. Type: Service Bulletin/Repair Instructions. Systems: ENGINE.
Engine software On Board Diagnostic (OBD) issues will be corrected, which will aid in engine malfunction identification and proper diagnosis. In addition, Diesel Exhaust Fluid (DEF) quality sensor monitors will be corrected to proper operating function.
10154958
Date: 2019-02-02. Type: Service Bulletin/Repair Instructions. Systems: ELECTRICAL SYSTEM, ENGINE.
Certain truck models that were built with 2013 through 2015 model year CT13 engines. Engine software OBD issues will be corrected which will aid in engine malfunction identification and proper diagnosis. In addition, under certain conditions, the Selective Catalytic Reduction (SCR) system inducemen
10142194
Date: 2018-05-30. Type: Service Bulletin/Repair Instructions. Systems: SUSPENSION.
Lower shock absorber mounting bracket may break, this is due to that the shock absorber dimension is longer than the dimension between truck frame and suspension stop. Shock absorber effectively becomes stop and breaks the lower shock mount.
10118226
Date: 2017-07-05. Type: Service Bulletin/Repair Instructions. Systems: ENGINE.
There is a problem with certain truck models that were built with 2013 through 2015 model year CT13 heavy duty on board diagnostic (HDOBD) engines. These engines will require recalibration of the engine ECM and ACM (aftertreatment control module). Certain On Board Diagnostic (OBD) issues will be cor
10116466
Date: 2017-06-29. Type: Service Bulletin/Repair Instructions. Systems: ENGINE.
There is a problem which relates to engine emissions on certain CT660, CT680, and CT681 On Highway Trucks that were built with 2016 model year compliant CT13 Engines. This recall will require recalibration of the engine ECM. Certain On Board Diagnostic (OBD) issues will be corrected which will aid i
10089337
Date: 2016-11-10. Type: Service Bulletin/Repair Instructions. Systems: ENGINE.
EXTENDED LIFE COOLANT (ELC) EXHIBITING NITRITE DEPLETION IN MACHINES EQUIPPED WITH ALUMINUM RADIATORS-NITRITES IN EXTENDED LIFE COOLANT (ELC) CAN REACT WITH THE ALUMINUM COOLER TO PRODUCE ELEVATED PH AND LOW NITRITE LEVELS IN SCHEDULE OIL SAMPLING (S@A O@A S) SAMPLES. AS THERE ARE MULTIPLE ISSUES TH
10089318
Date: 2016-11-08. Type: Service Bulletin/Repair Instructions. Systems: ENGINE AND ENGINE COOLING.
THE EXISTING EXHAUST FLEX PIPE CAN CRACK ON CERTAIN CT660, CT680, AND CT681 ON-HIGHWAY TRUCKS. IF THE EXISTING EXHAUST FLEX PIPE CRACKS IT CAN/WILL RESULT IN AN EXHAUST LEAK AFTER THE AFTERTREATMENT SYSTEM BUT BEFORE THE VERTICAL STACK. REPLACE THE EXHAUST FLEX PIPE AND BOTH CAB SHOCKS.
10084118
Date: 2016-10-07. Type: Service Bulletin/Repair Instructions. Systems: ENGINE.
THERE IS A PROBLEM WITH THE CALIBRATION FILE ON CERTAIN CT660 ON HIGHWAY TRUCKS THAT WERE BUILT WITH 2010 THROUGH 2013 MODEL YEAR CT13 ENGINES. THE ON BOARD DIAGNOSTIC (OBD) DATA STORED FOR PURPOSES OF DEFINING REQUIRED MAINTENANCE OR REPAIR MAY BE INADVERTENTLY LOST WITHOUT NOTICE TO THE OPERATOR.
10078942
Date: 2016-04-23. Type: Service Bulletin/Repair Instructions. Systems: ENGINE.
SPN 731 FMI 16/18 KNOCK DETECTED FOR CAT CT11 AND CT13 ENGINES - THE FOLLOWING PROCEDURE IS FOR TROUBLESHOOTING THE SPN 731 FMI 16/18 KNOCK DETECTED DIAGNOSTIC CODE.