P0D9C: Battery Charger Coupler Temperature Sensor A Circuit High

P0D9C is stored when the signal of coupler temperature sensor A climbs above its valid window, the typical result of an open sensor loop, an unplugged connector or a short to a supply voltage. Read as temperature, a high signal means cold for an NTC but hot for the resistive PTC and Pt 1000 elements found in CCS inlets from Phoenix Contact, which is why an interrupted Pt 1000 wire can look like a contact far above the +90 °C shutdown limit and stop charging at once. Bentley's TPI 2075291/1 for the 2024 Bentayga Hybrid confirms that P0D9C is the high fault, although the on-board charger (address 00C6) shows the text of the low fault; the diagnostic path must follow the code number. Bentley gives no thresholds. Unlike true overtemperature (P0E5F), nothing is actually hot here; the circuit is at fault. Its low counterpart is P0D9B.

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.

Symptoms

Charging stops immediately or does not start
Charging system fault message
Fault stored as intermittent or static in the charger

Most likely causes

Open sensor wire or connector at the inlet or charger
Sensor signal wire shorted to a supply voltage
Temperature element open inside the inlet
Diagnosis misled by swapped fault texts in the charger (Bentley)

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 sensor's ground and make sure the signal wire is not receiving voltage from another circuit.
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: medium

What each character of P0D9C means

P: Powertrain: engine and transmission
0: Generic code: same on every make
D: Subsystem depends on the code range
9C: Specific fault in that system

Frequently asked questions

Can I keep driving with code P0D9C?

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 P0D9C?

The most common causes are: open sensor wire or connector at the inlet or charger; sensor signal wire shorted to a supply voltage; temperature element open inside the inlet.

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.