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Home / DTC / P2E92 — Charge Port Door B Open Request Switch Wake-Up Circuit

P2E92 — Charge Port Door B Open Request Switch Wake-Up Circuit

Detailed page for trouble code P2E92.

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P2E92

Generic P — Powertrain

Charge Port Door B Open Request Switch Wake-Up Circuit

Brand: Generic
Type: P — Powertrain
Views: UK: 16 EN: 22 RU: 24
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Page language: EN

Causes

  • Open or shorted wiring between charge port door switch and control module
  • Faulty charge port door B open request (wake) switch
  • Corroded, loose, or damaged connector at the switch or module
  • Blown fuse or loss of reference voltage/ground
  • Control module software/firmware bug or internal fault
  • Water intrusion or debris in charge port area affecting the switch

Symptoms

  • Charge port door B does not open via switch or vehicle app
  • Charge port door open/close may work intermittently
  • DTC stored and possibly illuminated warning related to charge port
  • No response from charge port door when pressing handle or interior release

What to check

  • Scan for DTCs and record freeze frame/live data related to charge port door circuits
  • Attempt to operate charge port door B from switch, key fob, and vehicle controls while monitoring scan tool
  • Inspect switch connector and wiring for corrosion, damage, or water intrusion
  • Check related fuses and power/ground circuits
  • Measure voltage and continuity on the wake-up signal wire at the switch and at the control module
  • Consult service bulletins or software updates for charge port door module

Signal parameters

  • Wake-up signal type: typically a low-voltage signal referenced to vehicle ground (could be pull-up to battery or pull-down to ground depending on design)
  • Inactive state: open or near 0 V (or battery voltage depending on pull-up/pull-down design)
  • Active state: switch closure produces expected change (approx. battery voltage or 0 V depending on configuration)
  • Continuity: switch closed should show low resistance (near 0 ohms). Open should show high resistance/infinite.
  • Intermittent toggling or stuck value indicates wiring/switch faults or module input failure

Diagnostic algorithm

  1. Retrieve DTCs and live data with a scan tool; note when the code sets and any related modules reporting faults.
  2. Visually inspect charge port B switch, actuator, and harness for damage, corrosion, or water intrusion. Repair obvious damage.
  3. Verify fuses and power feeds for the charge port/door circuit; restore any blown fuses and re-test.
  4. With ignition off, disconnect the switch connector and inspect pins. Reconnect and wiggle harness while monitoring live data for changes.
  5. Measure voltage at the switch harness: with vehicle in expected wake/active state, confirm the wake signal changes state when the switch is operated. Compare readings at switch and at the control module harness to locate opens/shorts.
  6. Perform continuity/resistance checks from switch pin to module input pin. Replace wiring or repair connectors if open or high resistance is found.
  7. If wiring and switch check good, swap or bench-test the switch (if serviceable) or replace the switch assembly and clear codes.
  8. If fault persists after wiring and switch replacement, inspect/replace the control module or update module software per manufacturer guidance.
  9. After repairs, clear DTCs and perform functional test of charge port door B through all control methods; road test or cycle vehicle to confirm no reoccurrence.

Likely causes

  • Damaged wiring harness or chafed insulation near charge port
  • Failed switch due to moisture or mechanical wear
  • Connector pins corroded or pushed out at the switch or BCM
  • Blown accessory fuse or missing battery feed to switch circuit

Fault status

⚠️ Status
Charge Port Door B Open Request Switch Wake-Up Circuit — no valid wake signal detected (open/short/intermittent)
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-2.0 hours

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