Powertrain, generic · Hybrid propulsion

P0DEF Pedestrian Alert Control Module Circuit High

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

P0DEF reports a voltage above the permitted window on the wired link to the pedestrian alert control module, most often because a wire touches a supply line or the line has lost its ground reference. No manufacturer documents P0DEF publicly. The consequence differs from the low case: a line stuck high may leave the module permanently woken or commanded, so instead of silence the alert can behave oddly, for example sounding when it should not or draining the 12 V battery while parked. Whether that happens depends on the design. The legal background is the same as for the siblings: FMVSS 141 and the EU require a warning sound for quiet vehicles at low speed. Ford names the unit PACM. P0DED is an open circuit, P0DEE a short to ground, U013F lost communication.

Likely causes

Wire pinched against a 12 V supply line
Loose or corroded ground connection of the module
Internal fault of the alert module or its driver

Symptoms

  • Pedestrian sound missing or sounding at the wrong time
  • Warning message in the instrument cluster
  • Possible 12 V battery drain while parked

Repair estimate

DifficultyMediumDIY possible
Parts and labour€40–600
Time0.5–2.5 h

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

Parts involved

pedestrian alert control modulewiring harness

Related codes

P0DEEP0DEDU013FB0123

References: law.cornell.edu, en.wikipedia.org, static.nhtsa.gov.