P0D2B

Code

Generic P — Powertrain

Control Pilot Indicator Control Circuit/Open

Brand: Generic

Type: P — Powertrain

Views: UK: 25 EN: 36 RU: 31

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Page language: EN

Causes

Open or broken wiring in the control pilot indicator circuit
Poor or corroded connector pins/terminals
Blown fuse or circuit breaker in the indicator supply circuit
Faulty indicator lamp/LED or lamp housing
Loose or poor ground connection
Faulty charging module, body control module (BCM) or instrument cluster driver output

Symptoms

Related charge/pilot indicator lamp does not illuminate
Charging status indicator shows incorrect or no status
DTC stored in charging/vehicle control module
Possible partial or failed charging sequencing (depending on design)
No change when switching ignition or charging on/off

What to check

Read freeze frame and related codes from charging control module, BCM or instrument cluster
Visually inspect harnesses and connectors for damage, corrosion, pin push-out or misalignment
Check fuses and circuit breakers for the indicator circuit
Perform a wiggle test on harness while observing indicator operation or DTC set/reset
Measure voltage at the indicator connector with respect to ground while commanding the indicator ON (if vehicle supports active command)
Check continuity between the module driver pin and the indicator lamp terminal with connectors disconnected

Signal parameters

Expected open-circuit behavior: continuity infinite ohms between driver and lamp when circuit open
Expected continuity: low resistance (
Driver output voltage when commanded ON: approximately battery voltage or 9–14 V (vehicle type dependent)
Driver output when commanded OFF: approximately 0 V
If a PWM driver is used: duty cycle changes according to commanded brightness (verify with specification)

Diagnostic algorithm

Connect a scan tool and retrieve current/confirmed codes and freeze frame data. Record before clearing.
Visually inspect connectors and wiring from charging inlet/pilot connector to instrument cluster/BCM and charging module. Repair any damaged insulation or terminals.
Check fuses/circuit breakers related to the indicator circuit. Replace if blown and re-test; if fuse blows again, diagnose short to power or ground.
With ignition/charging system off, disconnect the indicator connector and measure continuity between the module driver pin and the indicator lamp terminal. If infinite, trace and repair wiring open.
With harness connected, command the indicator ON using the scan tool (if supported) and measure voltage at the driver pin relative to ground. If voltage is present but lamp does not light, suspect failed lamp/LED or connector; if no voltage, suspect module output fault.
If wiring and lamp check good, bench-test the indicator lamp by applying appropriate supply voltage through a current-limiting resistor to confirm lamp/LED operation.
Perform back-probe wiggle test while charging or commanding the indicator to reproduce the fault. Repair any intermittent connector or harness failures.
If wiring, connector and lamp are confirmed good and the driver does not produce proper output, follow manufacturer procedure to diagnose/replace the charging module, BCM or instrument cluster driver output.
Clear codes and perform a road/charge cycle to confirm repair and ensure code does not return.

Likely causes

Wiring harness damage or chafing causing an open circuit
Corroded or bent connector pins at the charging inlet, instrument cluster or BCM
Failed indicator lamp/LED
Blown inline fuse protecting the indicator circuit

Fault status

⚠️ Status

Control Pilot Indicator Control Circuit — Open (no continuity detected). Indicator may not illuminate; check wiring, connectors, fuses and driver output.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 0.5-2.0 hours