Reference meaning
What does this code mean?
The wording below belongs to the named make and communication. Match the complete code, reporting module, model year and engine before applying it.
A code identifies a detected condition, not a part that must automatically be replaced.
Narrow by vehicle
A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
Before replacing a part
Record codes and freeze-frame data. Check battery condition, related codes and visible wiring or hose damage. Follow the vehicle's diagnostic procedure and test results before replacing parts.
Scan worksheet →Manufacturer communications
5Original wording in English
AUDI
This bulletin provides information when the yellow electrical system warning lamp is illuminated; DTC B1581F4, B168A00.
AUDI
This bulletin provides information when the yellow electrical system warning lamp is illuminated; DTC B1581F4, B168A00.
AUDI
This bulletin states to repair the splice point J1 in instances where an electrical system warning, drive system warning and/or the vehicle has reduced power with the DTCs P068500, P068A00, P1BEF00, B158121, P0C4700 stored sporadically.
AUDI
This bulletin contains a software update for DTC B158129 and B158131 with the A/C system being inoperative.
Check vehicle applicability
22A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Audi | A3 SPORTBACK E-TRON ↗ | 2018 |
| Audi | A3 SPORTBACK E-TRON ↗ | 2017 |
| Audi | Q4 E-TRON ↗ | 2026 |
| Audi | Q4 E-TRON ↗ | 2025 |
| Audi | Q4 E-TRON ↗ | 2024 |
| Audi | Q4 SPORTBACK E-TRON ↗ | 2026 |
| Audi | Q4 SPORTBACK E-TRON ↗ | 2025 |
| Audi | Q4 SPORTBACK E-TRON ↗ | 2024 |
Code meaning and manufacturer information
Original wording in English · Historical directory labels; manufacturer applicability has not been established for every entry.
Dim Panel Increase Input Circuit Short To Battery
Can I keep driving?
A code alone cannot establish whether driving is safe. A flashing malfunction light, severe shaking, overheating, oil-pressure warning or loss of braking or steering needs prompt attention. Stop in a safe place and seek assistance when control or engine safety is affected. Follow the vehicle handbook.