// Install guides
RACEME ULTRA TROUBLE CODES — 07-24 CUMMINS 6.7L
Write the code numbers down before clearing them. If you need help, we need the numbers.
Reading and clearing diagnostic trouble codes (DTCs) with the RaceMe Ultra when the check engine light comes on. A DTC is the ECM's record of a sensor reading outside its limits; the light comes on and the code is stored. The full code list is attached as a PDF. The tuner only switches off emissions-related codes as part of the tuning. Every other engine code still works exactly as before, so a non-emissions code means the truck has a real problem that needs diagnosing.
Steps
1 Turn the ignition to Run and touch the screen
The ignition must be in Run to read codes. Touch anywhere on the gauge screen to open the quick menu.
2 Select DTC
The tuner lists every stored code with its number and a description of the fault. Record the numbers.
3 Clear the codes with the engine off
The engine must be off, ignition still in Run. Select Yes to clear the trouble codes.
4 Check the confirmation
The Ultra confirms the clear with a success message. If a non-emissions code comes back, the truck is telling you something is wrong; follow proper diagnostics rather than clearing it again.
