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U019B00 — High-voltage charger (OBC) control unit – missing message

High-voltage charger (OBC) control unit – missing message. 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 U019B00

Porsche Taycan

Engine Control Module 1GatewayThermal Management

Porsche 911 (992)

Battery Energy Control ModuleEngine Control Module 1GatewayTME (Thermomanagement)

Porsche Panamera (971, 2017–2023)

Battery Energy Control ModuleEngine Control Module 1GatewayTME (Thermomanagement)

Porsche Panamera (972, 2024–)

Battery Energy Control ModuleEngine Control Module 1GatewayTME (Thermomanagement)

Porsche Cayenne (9YA)

Battery Energy Control ModuleEngine Control Module 1GatewayTME (Thermomanagement)

How to read and clear U019B00

  1. Plug a standard ENET (Ethernet-to-OBD) cable into your Porsche's OBD port and your Mac or Windows PC.
  2. Open STEUER14, pick your car and run a fault scan: every control unit is read, and U019B00 shows with its status, its full description and the freeze frame when the unit stores one.
  3. 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 reading

Other codes of the Engine Control Module 1

U014100Front-end electronics control unit (BCM1) - no communication
U014600Gateway control unit - no communication
U014B00Gateway – incorrect signal
U015100Airbag control unit - missing message
U015500Instrument cluster control unit - missing message
U019900Driver-side door control unit - no communication
U01B400Brake booster control unit - no communication
U01BA00Solenoid (parking lock) – electrical fault
U021200Steering wheel electronics control unit – missing messages
U023500Distance measuring sensor (master - right) - no communication
U025900Special vehicles control unit - no communication
U028A00Transmission oil pump – electrical fault

All 274 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.