Home › Fault codes › B143813

B143813 — Left rear parking/fog light bulb, Open circuit

Left rear parking/fog light bulb, Open circuit. 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 B143813

Porsche Taycan

Comfort System Module

Porsche 911 (992)

BCM2 (Body Control Module 2)

Porsche Panamera (971, 2017–2023)

BCM2 (Body Control Module 2)

Porsche Panamera (972, 2024–)

BCM2 (Body Control Module 2)

Porsche Cayenne (9YA)

BCM2 (Body Control Module 2)

How to read and clear B143813

  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 B143813 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 Comfort System Module

B143711Right brake lamp/turn signal bulb 4, Short circuit to ground
B143712Right brake lamp/turn signal bulb 4, Short circuit to B+
B143713Right brake lamp/turn signal bulb 4, Open circuit
B143715Right brake lamp/turn signal bulb 4, Open circuit/short circuit to B+
B143811Left rear parking/fog light bulb, Short circuit to ground
B143812Left rear parking/fog light bulb, Short circuit to B+
B143815Left rear parking/fog light bulb, Open circuit/short circuit to B+
B143911Right rear parking/fog light bulb, Short circuit to ground
B143912Right rear parking/fog light bulb, Short circuit to B+
B143913Right rear parking/fog light bulb, Open circuit
B143915Right rear parking/fog light bulb, Open circuit/short circuit to B+
B143C04Power button (ignition starter switch) – fault

All 616 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.