Powertrain, generic (extended)

P2A67 Alternative Fuel Tank C Level Sensor Circuit High

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modeNo

P2A67 is the high-side partner of P2A66: the tank C level voltage lies above anything a correctly working sender outputs at full. An unplugged connector, a broken signal or ground wire and a short to a supply voltage all push the input there. Roush names such faults for the high case of its propane senders and notes for the second-tank code P2068 that only the primary tank is then shown; for a third tank no such public text exists, and no manufacturer documents P2A67. Since a believed full tank C could leave the driver stranded, the module drops the value rather than display it. Look for a connector knocked loose during tank service and check ground continuity from sender to chassis.

Likely causes

Tank C sender plug loose or knocked off
Signal or ground wire broken
Signal shorted to a supply voltage

Symptoms

  • Check engine light
  • Tank C missing from the gauge
  • Driver unsure about remaining gas

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€80–700
Time0.5–3 h

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

Parts involved

alt fuel tank c level sensorwiring harnessafcm

Related codes

P2A64P2A66P2A68P2A62P01B2

References: law.cornell.edu, roushcleantech.com.