Drive with caution — fix soon.
This code means the exhaust pressure control valve is working, but its readings or response are outside the normal range the computer expects. This usually points to a sticky valve, carbon buildup, or a sensor reading that's drifting off. It's commonly fixed by cleaning or replacing the valve and checking the related wiring and sensor.
$150 – $600
Varies by vehicle and root cause.
Usually yes for short distances, but don't let it linger. The valve is out of its expected range, which affects emissions and warm-up. Have it checked within a week, sooner if you notice power loss or limp mode.
Expect roughly $150 to $600. Cleaning a sticky valve or fixing wiring is cheaper, while a full valve or sensor replacement raises the cost depending on your vehicle.
It's a moderate issue. The engine still runs, but performance and emissions suffer, and diesels can have filter trouble if it's ignored. It's best fixed soon rather than left alone.
It means the valve responds, but its position or pressure readings don't match what the computer commands. Often a sticky valve or drifting sensor is to blame rather than a complete failure.