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B189F04 — Left ambient light, rear cupholder in front center console (AL5) – defective
Left ambient light, rear cupholder in front center console (AL5) – defective. 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 B189F04
How to read and clear B189F04
- 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 B189F04 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
| B185022 | Ctrl. motor for instrument panel vents, Upper limit exceeded |
| B18504B | Ctrl. motor for instrument panel vents, Excess temp. |
| B185111 | Button for instrument panel vents, Short circuit to ground |
| B185129 | Button for instrument panel vents, Implausible signal |
| B185215 | Indicator light for instrument panel vents, Open circuit/short circuit to B+ |
| B189E04 | Right ambient light, rear cupholder, front center console (AL4) – defective |
| B18D3F4 | Function activation – authentication failed |
| B1903F0 | Refrigerant circuit – fill quantity too low |
| B191029 | Button for raising level control – signal implausible |
| B191129 | Button for lowering level control – implausible signal |
| B191207 | Button for sunroof/tilt roof, mechanical malfunction |
| B191229 | Button for sunroof/tilt roof, Implausible signal |
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.