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
JEEP
Battery Charge Indicator (BCI) Replacement Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find the following DTC has been set: ? B1271-00 - Charge Level Indicator Internal. Customer may also experience the following: ? BCI does not indicate charge status wh…
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
AM GENERAL, BUICK, CADILLAC, CHEVROLET, GMC, OLDSMOBILE, PONTIAC
DIAGNOSTIC TROUBLE CODES B1001, B1271 OR B1780 SET WHEN REPLACING / REPROGRAMMING OTHER MODULES FOR 1999 - 2003 PASSENGER CARS AND TRUCKS WITH CLASS 2 SERIAL DATA COMMUNICATION BETWEEN MODULES. *TT
Check vehicle applicability
14A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| AM General | HUMMER ↗ | Year unknown |
| Buick | BUICK ↗ | Year unknown |
| Cadillac | CADILLAC ↗ | Year unknown |
| Chevrolet | CHEVROLET ↗ | Year unknown |
| Ford | MUSTANG ↗ | 2016 |
| Ford | MUSTANG ↗ | 2015 |
| GMC | GMC ↗ | Year unknown |
| Jeep | WRANGLER ↗ | 2023 |
Code meaning and manufacturer information
Original wording in English · Historical directory labels; manufacturer applicability has not been established for every entry.
Servo Motor Potentiometer Defrost Circuit Short To Ground
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.