Powertrain, generic (extended)

P2E88 Proximity Detection Circuit B Range/Performance

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

P2E88 flags plug sensing on circuit B whose value is electrically valid but makes no sense, typically a voltage that falls between the defined steps for no plug, plug latched and release button pressed. Those steps come from fixed resistors: J1772 uses 150 Ω plus 330 Ω once the latch is opened, and IEC 62196 cables code their current rating with values from about 100 Ω to 1.5 kΩ, each read within a tolerance band. Supplier controllers such as Watt & Well's EVCC bias the pin with 5 V and treat less than 3.5 kΩ as a plug, more than 4 kΩ as none. No manufacturer documents P2E88; for circuit A FCA cured P0D57 on the 2017 Pacifica plug-in hybrid by reflashing its hybrid control processors. Worn contacts or an off-standard cable are common. Hard faults are P2E89 and P2E8A.

Likely causes

Worn or dirty proximity contact raising the resistance
Charging cable or adapter with off-standard coding resistor
Moisture in inlet B creating leakage paths
Control software judging the signal wrongly

Symptoms

  • Charging aborts or the current is limited unexpectedly
  • Plug status changes without anyone touching the connector
  • Fault appears only with certain cables

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€0–900
Time0.3–2.5 h

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

Parts involved

proximity detection bcharge inlet bwiring harness

Related codes

P2E87P2E89P2E8AP2E8BP0D57

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