P2144EGR Vent Control Circuit Low
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- How the car detects it
- P2144 reports a low signal in the circuit that drives the EGR vent solenoid – the valve that bleeds vacuum from a vacuum-operated EGR valve so it can close. With the usual low-side switching, a control wire touching ground keeps the solenoid energised regardless of the command. Whether that leaves the EGR valve unable to open or unable to close depends on the plumbing, but in both cases the EGR rate can no longer be controlled. Ford's 2014 spark-ignition code list includes P2144 with the warning lamp and a continuous test, though Ford gives no threshold; no other public manufacturer document names the code. P2143 covers an open circuit and P2145 the high fault of the same solenoid. Typical results are rough running, higher NOx or a failed EGR readiness test.
- What you may notice
- Check engine lamp on
- Rough idle or hesitation
- Emissions test failure because of EGR
- Likely causes
- LikelyControl wire chafed through and shorted to ground
- PossibleInternal short in the vent solenoid coil
- PossibleCorrosion bridging terminals in the connector
- RareFaulty output stage in the engine control module
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Easy · Often possible to do yourself.Typical cost: €30 – €250
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.