Drive with caution — fix soon.
This code means the exhaust pressure control valve circuit is reading a signal that's too high, often from high voltage, a short to power, or a valve stuck closed creating too much backpressure. It commonly points to a stuck valve, carbon buildup, or wiring and sensor faults. It's usually fixable by cleaning or replacing the valve and checking the circuit.
$150 – $650
Varies by vehicle and root cause.
Usually yes for short distances, but don't ignore it. High backpressure can strain a diesel engine and filter. If you feel reduced power or the car goes into limp mode, have it repaired right away.
Most repairs cost between $150 and $650. Cleaning a stuck valve or fixing wiring is cheaper, while replacing the valve or sensor raises the price depending on your vehicle.
It's a moderate concern. The engine still runs, but high exhaust pressure can hurt performance and, on diesels, strain the particulate filter, so it's best fixed soon.
A high reading often comes from a valve stuck closed, carbon buildup, a short to power, or a sensor reporting excess pressure. A mechanic will test the valve and circuit to find the cause.