Drive with caution — fix soon.
This code means the engine computer is reading an abnormally low voltage or pressure signal from the exhaust pressure sensor. It usually points to a short to ground in the wiring, a failed sensor, disconnected or clogged sensor tubes, or a poor connector. It's a moderate code related to emissions and drivability and is normally fixable with sensor or wiring repair.
$150 – $450
Varies by vehicle and root cause.
Usually yes for short trips, but don't delay. A low sensor signal can affect EGR and emissions and may cause reduced power, so have it checked within a few days.
Most repairs land between $150 and $450. Replacing the sensor or fixing a connector is cheaper, while tracing a wiring short to ground or cleaning sensor tubes adds labor.
It's moderate. The car usually stays drivable, but the fault impacts emissions and can reduce performance, and on diesels it relates to the particulate filter, so it's worth fixing promptly.
Common causes are a short to ground in the wiring, a failed sensor, or disconnected sensor tubes. The low reading tells the computer the sensor or its circuit isn't reporting realistic exhaust pressure.