Powertrain, generic (extended)

P2D7E Charging Start Switch Circuit

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

P2D7E is the umbrella circuit code for a charging start switch, the control with which a person begins a charging session by hand, for example to override a charging timer. It is set when the start switch line delivers no usable signal; the split into high, low, performance and intermittent follows in P2D7F to P2D82. No manufacturer documents P2D7E publicly. Patents show the part: Honda's early electric vehicle charger began charging only after its charge start switch was turned on, and Toyota's wireless charging system lets a passenger in the car or a person on the ground start charging with such a switch. CARB treats monitored hybrid parts as inputs that must be tested for circuit faults. Charging by button fails, while plug-in or timer charging may still work.

Likely causes

Loose, corroded or unplugged connector at the start switch
Broken wire between start switch and charging control unit
Start switch itself defective

Symptoms

  • Pressing the start button does not begin charging
  • Charging only begins at the programmed timer time

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€50–400
Time0.5–2.5 h

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

Parts involved

charging start switchwiring harness

Related codes

P2D7FP2D80P2D81P2D82P2D79

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