Drive with caution — fix soon.
This code means the engine computer detected a general malfunction in the exhaust pressure sensor circuit, which monitors backpressure in the exhaust to manage EGR flow and (on diesels) the particulate filter. It usually points to a faulty sensor, clogged sensor tubes, damaged wiring, or an exhaust restriction. It's a moderate emissions and drivability code that's typically fixable with sensor or wiring repair.
$150 – $450
Varies by vehicle and root cause.
For short trips usually yes, but you shouldn't rely on it. The fault can affect EGR and emissions controls and may trigger limp mode, so get it checked within a few days, especially on a diesel.
Most repairs run $150 to $450. Replacing the exhaust pressure sensor or cleaning its tubes is on the lower end, while diagnosing wiring problems or an exhaust restriction can add to the cost.
It's moderate. It won't usually strand you immediately, but it affects emissions and can cause reduced power. On diesels it also relates to particulate filter health, so don't let it linger.
It measures backpressure in the exhaust system so the computer can manage EGR flow and, on diesels, monitor when the particulate filter needs regeneration. A malfunction means the computer can't trust those readings.