P0D9BBattery Charger Coupler Temperature Sensor A Circuit Low
- Generic OBD-II code · Powertrain
- How the car detects it
- P0D9B means the voltage of coupler temperature sensor A has dropped below its valid window. Low refers to the signal, and what that implies about temperature depends on the element: with an NTC a low voltage stands for an extremely hot reading, whereas the PTC chain and Pt 1000 sensors Phoenix Contact builds into its inlets lose resistance as they cool, so in the usual pull-up wiring a low signal looks implausibly cold. A short to ground drives the signal low with either type. Bentley publishes the code for the 2024 Bentayga Hybrid: TPI 2075291/1 reports that the on-board charger (address 00C6) displays the texts of P0D9B and P0D9C swapped, and confirms that P0D9B is the low fault, so technicians should diagnose by code, not by the displayed wording. No thresholds are public. The high fault is P0D9C.
- What you may notice
- Charging refused or limited
- Charging system fault message
- Fault stored as intermittent or static in the charger
- Likely causes
- LikelySensor signal wire shorted to ground
- PossibleMoisture or corrosion bridging the sensor contacts in the inlet
- PossibleTemperature element internally shorted
- RareDiagnosis misled by swapped fault texts in the charger (Bentley)
- Repair
- Medium · Usually a job for a workshop.Typical cost: €50 – €1,200
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.