Damaged, chafed or corroded wiring to the charge port indicator, shorted to ground; Poor connection or water ingress in the charge inlet or indicator connector; Faulty indicator or lighting element in the charge inlet assembly; Faulty charge inlet assembly with an internal short; Blown fuse or supply fault affecting the indicator circuit, where the design uses a fused supply; Fault in the charger or control module output driver; Outdated control module software where the manufacturer has issued a known fix.

P0D87

Battery Charger Coupler Status Indicator Control Circuit A Low.

Generic
Powertrain
Generic code
Low severity

How this code is built

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

What it means

P0D87 means the charger control unit found the control circuit for the charge coupler status indicator (the light at the charge inlet) reading lower in voltage than expected. It applies to plug-in hybrids and electric vehicles. The unit commands the indicator and monitors the circuit, and it set the code when it saw a low voltage or short to ground. Circuit layout and the exact indicator design vary by model.

Symptoms

Charge port status light stays off or does not change colour during charging
Charge port light flickers or shows an incorrect state
Warning lamp or charging system message on the dash
Charging may not start or may stop early on some models
Fault code stored with no other obvious driving change

Possible causes

Damaged, chafed or corroded wiring to the charge port indicator, shorted to groundlikely
Poor connection or water ingress in the charge inlet or indicator connectorlikely
Faulty indicator or lighting element in the charge inlet assemblypossible
Faulty charge inlet assembly with an internal shortpossible
Blown fuse or supply fault affecting the indicator circuit, where the design uses a fused supplypossible
Fault in the charger or control module output driverrare
Outdated control module software where the manufacturer has issued a known fixrare

How to diagnose

Read all stored codes and freeze frame data, noting whether any other charging or high voltage faults are present
Check for manufacturer service bulletins and software updates for the specific model
Visually inspect the charge port, its seals and the surrounding area for water, dirt, corrosion or damage
Inspect the wiring and connectors from the charge inlet to the control module for chafing, pinching or green corrosion
Check the relevant fuses and the supply and ground to the indicator circuit using the wiring diagram
Measure the indicator control circuit voltage and resistance to ground with the connector unplugged and the control unit connector disconnected, following the model procedure
Activate the indicator with a bidirectional test if available and watch for a response
Clear the code, test charging and recheck whether the code returns

How to fix

Repair or replace damaged wiring and restore the circuit insulation
Clean, dry and refit corroded or wet connectors, and replace terminals or connectors that are damaged
Replace the charge inlet assembly or its indicator element if it is faulty
Replace a blown fuse only after finding and fixing the cause of the overload
Replace or update the charger or control module only after wiring and inlet are proven good, and update the software where an official fix exists

Can I keep driving?

Low severity

The vehicle can normally still be driven as the fault affects the charge indicator circuit. Book it in soon, as charging may be affected and you will lose the visual charging status. Follow any dash warnings, and do not use a damaged or wet charge port.

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