P2D73: Battery Charging System Negative Contactor D Control Circuit/Open

The negative contactor D of the battery charging system reports a control circuit/open condition. HV charging path cannot be commanded reliably.

High severity. Can I keep driving?If the car still runs, drive as little as possible and go to a specialized repair shop. Do not touch the orange cables: they carry high voltage.

Most likely causes

Open in coil control wire
Open contactor coil
Pin pushed back out of connector body

What to check, in order

Start with the simplest. You can tick off each step.

Read the codes with a hybrid-compatible scanner and write down the freeze frame data
Check the continuity of the wire between the component and the control module.
Make sure the battery cooling air intake is clean
Check the 12 V auxiliary battery, which can also trigger warnings
Leave any high-voltage measurements to a specialized repair shop

Good to know

Repair difficulty: hard
It can trigger limp mode.

What each character of P2D73 means

P: Powertrain: engine and transmission
2: Generic code: same on every make
D: Subsystem depends on the code range
73: Specific fault in that system

Frequently asked questions

Can I keep driving with code P2D73?

If the car still runs, drive as little as possible and go to a specialized repair shop. Do not touch the orange cables: they carry high voltage.

What causes code P2D73?

The most common causes are: open in coil control wire; open contactor coil; pin pushed back out of connector body.

Related codes

Sources

Values and procedures vary by manufacturer. If it affects brakes, steering, fuel or high voltage, see a professional. Updated: 2026-11-04. How we build these pages.