BodyB1478
CautionSeverity: Caution - get it checked when you can
Retained accessory power circuit high
Key terms: Control module: a small computer that runs one part of the car
1What it means in plain English
A body system has a fault. Depending on the make, this range can include airbags and seat belts, windows, locks and climate control, and also charging, brake, oil or coolant sensors.
2Common causes
- Wiring or connector fault
- Faulty sensor or switch
- Water or corrosion in a connector
- Control module fault
- Low battery voltage
3Can I drive?
Do not assume this code is safe to drive. If it concerns the brakes, brake vacuum, charging/alternator, engine oil or coolant, have it diagnosed before driving. Airbags or seat belts may not work in a crash, and a brake or charging fault can leave the car unsafe or stranded. For convenience systems (windows, locks, climate), have it checked when convenient.
This page gives general information. It is not professional advice. For a definite diagnosis and a repair quote, ask a qualified mechanic to inspect the car.
4Brand data 22
| Brand | Code | Description | System |
|---|---|---|---|
| BYD | B1478 | B/U capacitor terminal high VOLT Brand | Body |
| Chery | B1478 | B/U capacitor terminal high VOLT Brand | Body |
| Daewoo | B1478 | Passenger Curtain Airbag Squib Circuit Low Resistance Brand | Body |
| DFFX | B1478 | B/U capacitor terminal high VOLT Brand | Body |
| Ford | B1478 | No description available | Body |
| Geely | B1478 | B/U capacitor terminal high VOLT Brand | Body |
| GM | B1478 | Retained accessory power circuit high Brand | Body |
| Great Wall | B1478 | B/U capacitor terminal high VOLT Brand | Body |
| Hafei | B1478 | B/U capacitor terminal high VOLT Brand | Body |
| Holden | B1478 | Flame Off At Minimum Power Brand | Body |
| Hyundai | B1478 | No description available | Body |
| Land Rover | B1478 | Load Space Tailgate Lamp Power Supply Brand | Body |
| Maserati | B1478 | Channel 5 audio speaker output circuit shorted together Brand | Body |
| Mazda | B1478 | No description available | Body |
| Mitsubishi | B1478 | B/U capacitor terminal high VOLT Brand | Body |
| Opel | B1478 | Retained accessory power circuit high Brand | Body |
| Peugeot | B1478 | No description available | Body |
| Proton | B1478 | B/U capacitor terminal high VOLT Brand | Body |
| Saab | B1478 | Retained Accessory Power Circuit High Brand | Body |
| Smart | B1478 | No description available | Body |
| Tata | B1478 | Passenger Inflatable Curtain Resistance Too Low Brand | Body |
| Toyota | B1478 | No description available | Body |
Legend: SAE is the generic J2012 description; Brand is text taken from that manufacturer’s data. Manufacturer rows keep the wording and language of the source data, and non-English text is tagged so screen readers pronounce it correctly.
5Extended variant codes 3
These 7-character codes are manufacturer-specific variants of B1478 and may be reported by some scan tools.
| Brand | Code | Description | System |
|---|---|---|---|
| Hyundai | B147800 | The SRSCM sets DTC if there is a short to ground in Curtain Airbag-Passenger harness.※ SRSCM sends current for certain amount of time to monitor fault in airbag circuit Brand | Body |
| Mahindra | B147800 | Gateway ECU authentication failures Brand | Body |
| SsangYong | B147800 | Inflatable curtain airbag -passenger resistance too low Brand | Body |
6Related codes
Browse Bxxx codes or B147xx codes.