P2CEE: Particulate Filter Pressure Sensor D Circuit Intermittent/Erratic

What it means

The ECM detects a circuit intermittent/erratic fault on the particulate filter pressure sensor d. Reading cannot be used reliably for control.

At a glance

• Usually lights the check-engine light
• Affects emissions; the car can fail an emissions test

How it works

The DPF pressure sensor D reports pressure information the ECM uses to assess particulate-filter conditions. This code sets when the sensor’s electrical signal is erratic or intermittent, so the ECM cannot rely on its reading for control.

Common causes

Most likely first.

1. Sensor connector not seated
2. Noisy ground reference
3. Connector with intermittent contact under vibration

Symptoms

• Check engine light or DPF warning light on
• Power loss / limp mode
• Increased fuel consumption
• Failed forced regeneration attempts

How to diagnose it

1. Save the freeze-frame data and check live data for the DPF pressure sensor D for dropouts or abrupt changes, which can confirm an intermittent signal.
2. With the engine off, inspect sensor D’s connector and nearby wiring for a loose fit, corrosion, damage, or signs of movement.
3. Check whether the signal changes when the connector and harness are gently moved, and note any interruption.
4. Inspect the sensor’s ground reference and related connections for looseness or contamination.
5. If the wiring and connections are sound, test sensor D and its circuit against the manufacturer’s specifications.

Common fixes

• Reseat and secure the sensor D connector.
• Clean or repair a poor ground-reference connection.
• Repair wiring or terminals with intermittent contact.
• Replace the pressure sensor D if it fails testing.

Can I keep driving?

Avoid long or demanding drives if power is reduced or a DPF warning appears; unreliable pressure data can interfere with filter control and regeneration. If the vehicle enters limp mode or repeated regeneration attempts fail, have the fault diagnosed promptly.