BodyB1640
CautionSeverity: Caution - get it checked when you can
Left front mirror heater circuit
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 15
| Brand | Code | Description | System |
|---|---|---|---|
| Mercedes-Benz | B1640 | No description available | Body |
| BYD | B1640 | Driver seatbelt pretensioner not connected Brand | Body |
| Daewoo | B1640 | No description available | Body |
| GM | B1640 | Left front mirror heater circuit Brand | Body |
| Holden | B1640 | Left Mirror Heater Circuit Brand | Body |
| Honda | B1640 | No description available | Body |
| Hyundai | B1640 | No description available | Body |
| Land Rover | B1640 | No description available | Body |
| Mitsubishi | B1640 | Side HiVoltCut SNS. open circuit Brand | Body |
| Opel | B1640 | Left front mirror heater circuit Brand | Body |
| Peugeot | B1640 | No description available | Body |
| Proton | B1640 | Side HiVoltCut SNS. open circuit Brand | Body |
| Saab | B1640 | Left Front Mirror Heater Circuit Brand | Body |
| Subaru | B1640 | No description available | Body |
| Toyota | B1640 | 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 4
These 7-character codes are manufacturer-specific variants of B1640 and may be reported by some scan tools.
| Brand | Code | Description | System |
|---|---|---|---|
| Mercedes-Benz | B164028 | The temperature sensor of the windshield has a malfunction. The signal offset is outside the permissible range. Brand | Body |
| Mercedes-Benz | B16402A | The temperature sensor of the windshield has a malfunction. There is no signal change. Brand | Body |
| Mercedes-Benz | B164084 | The temperature sensor of the windshield has a malfunction. There is a signal below the permissible limit value. Brand | Body |
| Mercedes-Benz | B164085 | The temperature sensor of the windshield has a malfunction. There is a signal above the permissible limit value. Brand | Body |
6Related codes
Browse Bxxx codes or B164xx codes.