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.
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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
3Original wording in English
AUDI
This bulletin provides information when DTC B127213 is logged at diagnostic address 0005F.
FORD
Some 2015 and 2016 Mustang vehicles built on or before 4/22/2016 may exhibit a partial outage of the rear tail, turn signal or stop lamps following a vehicle start with a low battery. This may be accompanied by any combination of DTCs B1271, B1272, B1273, B1274, B1275 and B1276. The condition typically clears on vehicle restart.…
FORD
2015-2016 MUSTANG BUILT ON OR BEFORE 4/22/2016 - REAR TAIL LAMP, TURN LAMP OR STOP LAMP PARTIAL OUTAGE - DTCS B1271, B1272, B1273, B1274, B1275 OR B1276
Check vehicle applicability
4A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Audi | A6 SPORTBACK E-TRON ↗ | 2025 |
| Audi | S6 SPORTBACK E-TRON ↗ | 2025 |
| Ford | MUSTANG ↗ | 2016 |
| Ford | MUSTANG ↗ | 2015 |
Code meaning and manufacturer information
Original wording in English · Historical directory labels; manufacturer applicability has not been established for every entry.
Servo Motor Potentiometer Vent Circuit Failure
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.