P2388EGR Sensor E Circuit Range/Performance
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Needs a drive cycle to confirm a fix
- How the car detects it
- P2388 covers an EGR sensor E whose signal is electrically valid but does not agree with what the engine controller expects from the operating state. Typical tests compare the reading with a known condition, such as zero pressure difference with the engine off, or with a modelled value from other sensors. No manufacturer documents P2388 publicly. Published sensor D logic shows the approach: GM's 2025 diesels flag P2383 if the low-pressure EGR differential pressure exceeds 6 % at key-off, while Ford's 2024–2025 petrol engines use P2383 for swapped hoses at the EGR pressure sensor. Plugged or cracked sensing hoses, soot build-up and sensor drift are the usual culprits rather than wiring. The car drives normally, but the EGR monitor cannot complete.
- What you may notice
- MIL on
- EGR monitor readiness not set
- Sensor E reading implausible at engine off
- Likely causes
- LikelySensing hoses blocked, cracked or swapped
- PossibleSoot deposits at the sensor port
- PossibleSensor drifted out of calibration
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Often possible to do yourself.Typical cost: €10 – €350
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.