Powertrain, generic (extended)

P2144 EGR Vent Control Circuit Low

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modeNo

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.

Likely causes

Control wire chafed through and shorted to ground
Internal short in the vent solenoid coil
Corrosion bridging terminals in the connector
Faulty output stage in the engine control module

Symptoms

  • Check engine lamp on
  • Rough idle or hesitation
  • Emissions test failure because of EGR

Repair estimate

DifficultyEasyDIY possible
Parts and labour€30–250
Time0.3–1.5 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

egr vent solenoid

Related codes

P2143P2145P0403P0401

References: law.cornell.edu, performanceparts.ford.com, patents.google.com, patents.google.com.