 It's been running fine, but in the past few days, the DEF system, I think it's got some debris or clog in its contamination, and it's limited the truck to 55. And we've got an appointment later this week with the shop. Okay. But it didn't have anything we could do to bypass that for the short term so we could go better than 55. No, that DEF system, well, you could try clearing the fault. Has it set a fault code, Frank? Check engine light on?