Fault code index · low
P244A
Diesel particulate filter differential pressure too low
Diesel particulate filter differential pressure too low
Scope: 2.2D · System(s): EMS/diesel
Common causes
- Split/melted/disintegrated DPF pressure hose
- pressure sensor/circuit
- exhaust leak
- DPF issue
Quick checks
- Confirm freeze-frame and conditions when the code set
- Inspect connectors, grounds, and harness for the circuit named in the code
- Compare live sensor values vs expected (unplugged/biased sensors are common)
- Check intake boots, PCV, and vacuum lines for splits (very common on aged X-Types)
Typical fixes
- Inspect both pressure hoses and sensor first
- repair split/melted hoses and clear/retest
- then investigate sensor/DPF.