Damaged, corroded or loose connector at the charge port or indicator assembly; Open circuit or chafed wiring between the charging control module and the indicator; Failed status indicator (LED or lamp) inside the charge port assembly; Water ingress or contamination in the charge inlet or its connectors; Blown fuse or loss of supply or earth to the indicator circuit; Fault in the charging control module output driver; Outdated control unit software where the manufacturer has a known fix.

P0D89

Battery Charger Coupler Status Indicator Control Circuit B/Open.

Generic
Powertrain
Generic code
Low severity

How this code is built

P: SystemPowertrain
0: Defined bySAE, the same on every car
D: AreaReserved
89: FaultThe specific fault in that area

What it means

P0D89 means the control unit that manages charging has detected an open circuit in the 'B' control circuit for the battery charger coupler (charge port) status indicator. This is the light or indicator that shows the state of charging at the inlet. The unit commands the indicator and sees no expected current or voltage response, which points to a break in the circuit. The exact circuit layout and which module controls it depend on the make and model.

Symptoms

Charge port status light does not illuminate or flash as expected
Malfunction or hybrid/EV system warning light on the dashboard
Charging may be unreliable, refused or not start
No charging status feedback at the inlet when plugging in
Fault returns soon after being cleared

Possible causes

Damaged, corroded or loose connector at the charge port or indicator assemblylikely
Open circuit or chafed wiring between the charging control module and the indicatorlikely
Failed status indicator (LED or lamp) inside the charge port assemblypossible
Water ingress or contamination in the charge inlet or its connectorspossible
Blown fuse or loss of supply or earth to the indicator circuitpossible
Fault in the charging control module output driverrare
Outdated control unit software where the manufacturer has a known fixrare

How to diagnose

Read all stored codes and freeze frame data, noting whether other charging or hybrid system codes are present
Check the charge port visually for damage, moisture, debris, corrosion or bent pins, and see if the indicator lights at all
Check the relevant fuses and the supply and earth to the indicator circuit using the manufacturer wiring diagram
Inspect the wiring and connectors between the charging control module and the charge port for chafing, pin tightening issues and corrosion
Wiggle-test the harness with live data or the indicator commanded on, watching for the fault setting or clearing
With the circuit isolated and the system powered down safely, test wiring for continuity and resistance against the manufacturer specification
Test the indicator component itself against the specification, following high-voltage safety procedures
Check for software updates or technical bulletins for the model and clear the code, then retest by attempting a charge

How to fix

Clean, dry or replace corroded or damaged connectors and terminals
Repair or replace open or damaged wiring in the indicator circuit
Replace the charge port or indicator assembly if the indicator has failed
Restore the supply or earth and replace any blown fuse once the cause is found
Replace the charging control module only if the circuit and indicator are proven good
Update the control unit software if a known fault is documented for that vehicle

Can I keep driving?

Low severity

The car can usually be driven normally as this is an indicator circuit fault, but book it in soon as charging may be affected. Work on high-voltage components should only be done by a suitably trained technician; if you get any additional warnings or a loss of power, have it checked promptly.

Guide written by AI from the code's definition. Confirm with a diagnosis before replacing parts.