Powertrain, generic (extended)

P2AD7 Reductant Pump Motor Position Sensor Circuit Range/Performance

Check engine lightOn
EmissionsRelevant
Drive cycleRequired
Limp modePossible

P2AD7 sets when the motor position signal of the reductant pump is electrically valid but does not fit what the pump should be doing, for instance a rotor position or derived speed that is out of step with the commanded drive pattern. No maker documents P2AD7 publicly. Ford's 2023 diesel summary shows a related check from the speed side: P208B, the pump control performance code, fails when pump speed deviates from its setpoint by more than 300 rpm or the speed controller sits at its limit for 30 s. A stiff or partly frozen pump, crystallised DEF in the pump head or a shifted sensor magnet can all produce such mismatches. Because most pumps are sealed units, a confirmed P2AD7 together with pressure codes usually ends in a pump module replacement.

Likely causes

Pump stiff or partly frozen, crystallised DEF in the pump head
Position sensor inside the pump giving a shifted signal
Controller software needing an update

Symptoms

  • Check engine light and SCR warning
  • Pressure build-up of the DEF system fails, often after cold nights

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€300–1,500
Time1–4 h

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

Parts involved

reductant pump motor position sensorreductant pump

Related codes

P2AD6P2AD8P2AD9P208B

References: fordservicecontent.com, patents.google.com, law.cornell.edu.