P2E96

Code

Generic P — Powertrain

Charge Port Door B Open Request Switch Circuit High

Brand: Generic

Type: P — Powertrain

Views: UK: 23 EN: 27 RU: 16

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Page language: EN

Causes

Short to battery voltage (12 V) or other power source on the switch circuit
Open or high-resistance connection in the return/ground path causing a floating/high voltage reading
Failed/open or internally shorted charge port door B open request switch
Corroded, bent or damaged connector pins at the switch, charge port, or control module
Water intrusion or contamination at the switch or connector
Damaged wiring harness (chafing, pinched, exposed conductor) contacting a power source

Symptoms

Charge port door B does not open when commanded
Charge port door B stuck closed or unresponsive
Relevant dash message or warning lamp indicating charge door or charging fault
Ability to start charging may be disabled for safety
Stored DTC P2E96 (and possibly related codes)

What to check

Read and record DTCs and freeze-frame data with a diagnostic scanner; note vehicle conditions when code set
Check for related codes (other charge port door circuits, BCM/charger communication codes)
Visually inspect charge port door B switch, connector, and wiring for damage, corrosion, or water ingress
Back-probe the switch connector and measure voltage with key/vehicle in the state requested by the freeze frame (key on or accessory as required)
Measure resistance/continuity from the switch signal conductor to the module and to ground (with battery disconnected if required)
Wiggle test wiring while monitoring the signal to reproduce intermittent faults

Signal parameters

Typical signal type: discrete switch to ground or pull-up/pull-down input (manufacturer dependent)
Expected low (active) voltage: ≈0–0.5 V (switch closed to ground) on ground-switched circuits
Expected high (inactive) voltage: approximately pull-up reference (commonly ≈5 V for logic inputs or battery voltage for some body circuits). Consult OEM specification for exact values.
Fault condition: measured voltage above specified maximum for the input (example: >5.5 V on a 5 V input or >14 V on a 12 V logic reference)
Monitor for steady high voltage, intermittent spikes, or floating voltage when switch is disconnected

Diagnostic algorithm

Retrieve freeze-frame and full module data with a scan tool. Note ignition state, vehicle speed, and other inputs when the code set.
Visually inspect the charge port door B switch and harness for damage, corrosion, or water entry. Repair obvious damage.
With ignition in the required state, back-probe the switch signal terminal. Measure voltage relative to vehicle ground. Compare to OEM expected values.
Disconnect the switch connector. Measure voltage at the harness side. If voltage remains high, suspect short to power or faulty module pull-up.
Check continuity between the switch ground (if applicable) and chassis ground. Repair any poor grounds.
If the circuit uses a pull-up resistor to battery or 5 V reference, inspect the source of that reference for faults (fuse, wiring, module output).
Perform a wiggle test on the harness between the switch and the module while monitoring the signal for intermittent changes.
If short to power is suspected, isolate sections of the circuit (disconnect connectors) and check for voltage presence to locate the shorted segment.
If wiring and connector checks pass and the switch tests good, consider module input failure. Confirm with module bench tests or substitution per OEM procedure before replacement.
Clear codes and retest operation. Verify no reoccurring DTC and proper charge port door B operation.

Likely causes

Short to battery voltage on the switch feed or signal conductor
Failed switch stuck in high-voltage condition
Corroded or loose connector causing intermittent high/false high reading
Damaged harness contacting a power conductor

Fault status

⚠️ Status

Control module reports 'Charge Port Door B Open Request Switch Circuit High' — signal voltage above allowed threshold on the Charge Port Door B open request input.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 0.5-2.0 hours