Drive with caution — fix soon.
This code means the engine computer detected an intermittent or erratic signal from the exhaust pressure sensor, so the reading drops out occasionally rather than staying steady. It usually points to loose or corroded wiring, a flaky connector, or a sensor that's beginning to fail. It's a moderate emissions and drivability code that's typically fixable by repairing the circuit or replacing the sensor.
$150 – $450
Varies by vehicle and root cause.
Usually yes, but don't ignore it. The intermittent signal can briefly affect EGR and power, and the fault may worsen over time, so get it diagnosed within a week or so.
Most repairs run $150 to $450. Repairing a connector or wiring is cheaper, but diagnosing an intermittent fault takes time, and replacing the sensor adds parts cost.
It's moderate. The car usually stays drivable, but intermittent faults can be unpredictable and affect emissions, and on diesels they tie into the particulate filter, so it's worth addressing.
Because the problem comes and goes, the fault may not show up when a mechanic tests it. Loose wiring and connectors are common causes, so techs often wiggle-test the harness to recreate the dropout.