Universal · OBD cables
A physical adapter cable that converts BMW's old type round 20-pin diagnostic socket to a standard 16-pin OBD2 female connector.
The exact plan and total amount will be shown again at the payment step.
This cable converts the BMW round 20-pin diagnostic socket to a standard 16-pin OBD2 female port. Check the socket on your vehicle and the OBD2 port of the device to be connected before purchasing.
Product information
The BMW 20 Pin OBD Cable is a physical adapter that connects the round 20-pin diagnostic socket found in older BMW vehicles to a standard 16-pin OBD2 female port. The cable is not a fault code reader, software, or protocol license; communication and service functions depend on the main device's vehicle coverage.
Physical Connection Coverage
Connecting the cable, adapter, or communication module to the vehicle does not prove that the vehicle is supported by the software. The physical connector, pin layout, main device, and vehicle software must be compatible simultaneously.
Product details
The cable establishes a physical connection between the BMW-specific round 20-pin diagnostic socket in the engine bay and the standard 16-pin OBD2 female device port. This allows a compatible OBD2 fault code reader to be connected to the appropriate line on the vehicle.
The adapter only converts the connection type; it does not expand the device's software, vehicle coverage, or service functions.
Product details
The 20-pin connection is particularly found in older BMW E-chassis and early-model vehicles. Sources cite E30, E36, early E46, E28, E34, early E39, E32, E38, E31, early E53, and some Z models as examples.
As there can be differences in production year, market, and engine/wiring within the same chassis, definitive confirmation is based on physically seeing the round 20-pin socket on the vehicle, not just the model name.
Product details
The vehicle side of the adapter is BMW 20-pin, and the device side is a standard 16-pin OBD2 female connection. Therefore, the main device to be used must have a 16-pin OBD2 cable or port.
Results with devices such as Delphi, Autocom, Launch, Ancel, iCarsoft, and similar will vary depending on the device's BMW software, protocol, control unit, and relevant vehicle coverage.
Product details
First, check the diagnostic connection area under the hood. If the round BMW 20-pin socket is present, the vehicle side of the adapter will physically match. If the vehicle only has an in-cabin 16-pin OBD2 socket, this product may not be necessary. The socket's cover, pin arrangement, locking direction, and cable body should be compared without forcing.
Product details
Physical socket conversion alone does not guarantee access to engine, ABS, airbag, transmission, or body modules. Fault code reading, live data, service reset, coding, and programming results depend on the main device's BMW coverage, software version, vehicle's control unit, and connection protocol.
If programming is to be performed, a stable battery supply and manufacturer procedure are also required.
Product details
Before using the BMW 20 Pin OBD model, compare the connectors on the main device and vehicle sides. Match the main device model, two connectors, and pin arrangement with the BMW 20 pin - 16 pin OBD2 conversion cable label.
If the BMW 20 pin - 16 pin OBD2 conversion cable has a bent pin, cracked sheath, or loose connector, a service connection cannot be established. After connecting the BMW 20 pin - 16 pin OBD2 conversion cable without forcing, perform a short read test.
The communication result is recorded, specifying the device and vehicle socket used with the BMW 20 pin - 16 pin OBD2 conversion cable.
Product details
When communication cannot be established with the BMW 20 Pin OBD model, first verify that the power on the vehicle socket and the main device are working. Re-examine the pins on the BMW 20 pin - 16 pin OBD2 conversion cable, the cable sheath, and the connector orientation.
The BMW 20 pin - 16 pin OBD2 conversion cable is subjected to a short comparison test with a known compatible device or vehicle connection.
If the BMW 20 pin - 16 pin OBD2 conversion cable cannot communicate despite the main device model, vehicle socket, and connector structure being correct, add the error screen and a photo of the two connectors to the service record.
At the end of the job, remove the BMW 20 pin - 16 pin OBD2 conversion cable by holding the connector body and store it without coiling at sharp angles.
Product details
The physical fit of the converter, the OBD2 port of the device to be connected, the BMW chassis and model year, and the device software coverage determine the compatibility of the BMW 20 Pin OBD model.
The BMW 20 pin - 16 pin OBD2 conversion cable converts the BMW round 20-pin diagnostic socket to a standard 16-pin OBD2 input; the product does not add software, vehicle support, or service functions on its own.
If the BMW 20 pin - 16 pin OBD2 conversion cable is to be used, the connectors at both ends, pin layout, cable length, and compatible device family must match the product information. A BMW 20 pin - 16 pin OBD2 conversion cable with damaged pins, a loose socket, or an incorrect adapter can lead to communication errors.
The technical specifications of the BMW 20 pin - 16 pin OBD2 conversion cable are limited to the product label and official connection information.
Product details
The BMW 20 Pin OBD model, Autel MX808 / MX808S Compatible OBD2 Main Connection Cable, Opel 10 Pin - 16 Pin OBD2 Converter Cable, Passenger Car OBD Cable Set 8 pieces, and Launch OBD2 Cable 15 cm are not direct alternatives to each other.
In the comparison of the BMW 20 Pin OBD model, Autel's DB15 main cable, BMW's 20-pin round adapter, Opel's 10-pin adapter, the old-type passenger car socket set, and standard Launch extension cables do not perform the same function. The distinction between main device cable, vehicle adapter, and extension cable must be made before establishing a connection.
The BMW 20 Pin OBD model converts the BMW round 20-pin diagnostic socket to a standard 16-pin OBD2 input. The physical fit of the converter, the OBD2 port of the device to be connected, the BMW chassis and model year, and the device software coverage are compared along with the connector type, pin layout, and cable length.
Autel MX808 / MX808S Compatible OBD2 Main Connection Cable, Opel 10 Pin - 16 Pin OBD2 Converter Cable, Passenger Car OBD Cable Set 8 pieces, and Launch OBD2 Cable 15 cm may be prepared for different vehicle sockets or service connections.
The BMW 20 Pin OBD model only performs the physical connection function; it does not add vehicle brand or service functions to the main device's software.
Product details
The BMW 20 Pin OBD model package includes only the cable or adapters specified by name and quantity in the box contents. The physical fit of the converter, the OBD2 port of the device to be connected, and the BMW chassis and model year are compared with the physical part upon delivery. Diagnostic tablets or vehicle software are not assumed to be included in the package.
If the BMW 20 Pin OBD model requires a main device, the compatible device family is specified separately. The warranty for the BMW 20 Pin OBD model is valid only within the scope of the purchased physical product and the described conditions.
Related pages
Technical Resources
Technical information checked with official sources on October 7, 2026.
FAQ
It converts BMW's round 20-pin diagnostic socket to a standard 16-pin OBD2 female connector. The main device's software and vehicle scope are required separately.
No. The vehicle must have a round 20-pin socket, and the device to be used must support BMW-related protocols and control units. Model year and physical socket are checked together.
Some older or early production variants of these chassis may have a 20-pin socket. Exact compatibility is determined not by chassis name, but by the physical appearance of the socket in the vehicle and the main device's scope.
No. This product is only a physical connection adapter; it does not include a diagnostic device, BMW software, license, or computer.
Generally not. If the vehicle has a usable standard 16-pin OBD2 socket, the main device can be connected directly with the appropriate cable.
The cable alone does not perform coding or programming. These operations depend on the main device's software, the vehicle's control unit, the connection protocol, power supply, and manufacturer procedures.
Comparison
Compare products in the same class with information on usage level, service tasks, and price.
| Model | Level | Usage | Price | View |
|---|---|---|---|---|
| BMW 20 Pin OBD CableUniversal | Specialty operation |
| ≈ $401,990 TL charged · VAT included · import duties excluded | View |
| Renault CAN Clip OBD CableUniversal | Specialty operation |
| ≈ $401,990 TL charged · VAT included · import duties excluded | View |
| Autocom CDP+ Compatible OBD2 Main CableUniversal | Specialty operation |
| ≈ $401,990 TL charged · VAT included · import duties excluded | View |
| Delphi DS150E Compatible OBD2 Main CableUniversal | Specialty operation |
| ≈ $401,990 TL charged · VAT included · import duties excluded | View |
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