P0E3D

Code

Generic P — Powertrain

Control Pilot Indicator Control Circuit Low

Brand: Generic

Type: P — Powertrain

Views: UK: 25 EN: 45 RU: 22

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Page language: EN

Causes

Short to ground in the control pilot indicator wiring
Open or high-resistance connection in the indicator circuit (broken wire, connector corrosion)
Failed indicator lamp or LED (open or internally shorted)
Blown fuse or fusible link feeding the indicator circuit
Poor or missing ground at connector or module
Faulty charging control module or charging inlet module

Symptoms

Indicator lamp/LED for the charging pilot does not light or is dim
Charging process inhibited or error displayed on vehicle/EVSE
DTC P0E3D stored and related charging fault warning(s) on instrument cluster
Intermittent indicator operation or flicker
Possible reduced functionality of charging inlet or charging status reporting

What to check

Read and record freeze frame and live data with a scan tool; note any related codes
Visual inspection of charging inlet, indicator lamp/LED, wiring harness, and connector seals for damage, corrosion, or water
Check fuses and fusible links for the indicator circuit
Back-probe the indicator control connector and measure voltage with key/charging state as required
Check continuity from the indicator connector to the control module and to ground
Measure resistance of the indicator lamp/LED assembly (compare to specification if available)

Signal parameters

Expected control/indicator signal: typical 0–12 V range (inactive near 0 V; active approximately battery voltage — ~9–14 V) depending on system design
If the circuit is driven with PWM, expect a pulsed waveform; duty cycle varies with module commands (use scope to verify presence and pattern)
Open circuit: very low or no current draw and no measurable continuity to the indicator
Short to ground: voltage on the control pin will be low (near 0 V) and may pull down the module output when active
Indicator element resistance: varies by design (LED modules often show higher resistance; incandescent bulbs lower); compare to service data where available

Diagnostic algorithm

Safety first: follow vehicle manufacturer procedures for high-voltage systems and electrical safety. If working near high-voltage components or charging inlet, make sure the system is deenergized and appropriate PPE is used.
Use a scan tool to confirm P0E3D is active or stored. Record freeze frame data and check for other related DTCs.
Perform a visual inspection of the charging inlet, indicator lamp/LED assembly, wiring harness, and connector seals for damage, corrosion, water intrusion, or crushed/chewed wiring.
Check fuses/fusible links that supply the indicator circuit; replace any blown fuses and retest.
With the vehicle in the appropriate key/charge state, back-probe the indicator control pin at the connector and measure voltage relative to battery negative. Compare to expected (should be near battery voltage when active, near 0 V when inactive).
If voltage is low, disconnect the indicator assembly and measure voltage at the harness connector again. If voltage returns to normal with the indicator disconnected, suspect a shorted or low-resistance indicator assembly.
Check continuity from the indicator harness pin to the control module pin and to chassis ground. Repair any open or high-resistance connections. Perform wiggle tests while monitoring for changes.
If a short to ground is suspected, isolate sections of the harness and test for continuity to ground to locate the short. Repair damaged wires or replace harness sections as required.
Inspect and clean connector pins; apply dielectric grease after repair if appropriate. Replace any damaged connectors or sockets.
If wiring and indicator assembly are good, verify module output using a lab scope if available. If the module output is always low or abnormal and wiring is confirmed good, suspect a defective control/charging module or internal driver fault.
After repairs, clear DTCs, perform a functional test of the indicator and charging process, and verify the code does not return. Road- or charge-cycle test as required to confirm repair.

Likely causes

Short to ground in the indicator wiring
Failed indicator lamp/LED or burned-out element
Connector corrosion or damaged pin causing low voltage
Blown fuse supplying the indicator circuit

Fault status

⚠️ Status

Control Pilot Indicator Control Circuit voltage below expected threshold (circuit low). Possible short to ground, open/poor connection, failed indicator, blown fuse, or module fault. Charging indicator may not function and charging could be inhibited.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 0.5-2.0 hours