Home › Fault codes › B10D031
B10D031 — Coolant pump - no signal
Coolant pump - no signal. The Taycan, 911 (992), Panamera (971), Panamera (972) and Cayenne report this code; below is which control unit sets it on each model and how to read and clear it.
Which models and control units set B10D031
How to read and clear B10D031
- Plug a standard ENET (Ethernet-to-OBD) cable into your Porsche's OBD port and your Mac or Windows PC.
- Open STEUER14, pick your car and run a fault scan: every control unit is read, and B10D031 shows with its status, its full description and the freeze frame when the unit stores one.
- Fix the cause first, then clear the fault memory and scan again to check it stays away. Reading and clearing fault codes is free on every control unit.
More about fault memory in the manual →
Download STEUER14 — free fault readingOther codes of the Central Electrics
| B10CFF1 | Instrument panel temperature sensor, Electrical error in Temperature sensor 1 |
| B10CFF2 | Instrument panel temperature sensor, Electrical error in Temperature sensor 2 |
| B10CFF3 | Instrument panel temperature sensor, Electrical error in Temperature sensor 3 |
| B10D004 | Coolant pump - mechanical fault |
| B10D012 | Coolant pump, PWM line - short circuit to B+ |
| B10D014 | Coolant recirculation pump, Open circuit/short circuit to ground |
| B10D098 | Coolant pump - temperature too high |
| B10D0F0 | Coolant pump - dry run |
| B10D104 | Servo motor for rear left air distribution, faulty |
| B10D107 | Left B-pillar/footwell shut-off door motor, mechanical malfunction |
| B10D11C | Left B-pillar/footwell shut-off door motor, Voltage implausible |
| B10D121 | Left B-pillar/footwell shut-off door motor, Lower limit not reached |
All 1472 codes of this control unit →
Fault names come from the manufacturer's diagnostic data. STEUER14 is independent and not affiliated with Porsche AG. A code tells you what a control unit detected, not always which part failed — check wiring, supply voltage and related codes before replacing parts. STEUER14 shows each fault's full description, status and freeze frame on the car.