What is the CAN Bus protocol?

CAN Bus (Controller Area Network) is a communication protocol that allows vehicle electronic components to communicate with each other. It allows reading ECU data such as RPM, speed, fuel level, odometer and error codes.

What CAN Bus protocols do Rinho devices support?

Smart IoT and Spider IoT devices support OBDII (cars and pickup trucks), J1939 (heavy trucks), EBS (braking systems) and IESCAN (agricultural machinery). They connect without cutting cables.

What data can I get via CAN Bus?

You can get: RPM, real speed, fuel level and consumption, odometer, engine temperature, error codes (DTC), door status, seat belt, and many more depending on the vehicle.

Is it necessary to cut cables to connect CAN Bus?

No, Rinho devices connect to the vehicle OBD2 port or diagnostic connector without cutting any cables. It is a 100% non-invasive connection.

Does CAN Bus work on heavy trucks?

Yes, we support the J1939 protocol which is the standard in heavy trucks (Volvo, Scania, Mercedes-Benz, MAN, DAF, etc.). You can read all ECU data from the truck.

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Advanced Feature

CAN Bus and ECU Reading

OBD2, J1939, IESCAN. All integrated.

Connect directly to the vehicle ECU to get accurate data: fuel consumption, RPM, temperature, real odometer, fault codes and more. Compatible with OBD2 for cars and J1939 for trucks.

Check compatibility View devices

Native CAN Bus

3 Protocols

OBD2

For light vehicles (cars, pickups, SUVs)

J1939

For heavy vehicles (trucks, buses)

IESCAN

Special protocol for Mercedes-Benz

Protocols

What data can you get?

OBD2

For light vehicles (cars, pickups, SUVs)

ECU speed
Engine RPM
Coolant temperature
Fuel level
Fault codes (DTCs)

J1939

For heavy vehicles (trucks, buses)

Fuel consumption
Engine hours
Odometer
Exhaust temperature
Oil pressure

IESCAN

Special protocol for Mercedes-Benz

Exclusive Mercedes data
Extended compatibility
Advanced diagnostics

Benefits

Why use CAN Bus?

Accurate Fuel Control

Direct consumption reading from vehicle ECU with up to ±0.5% accuracy.

Engine Data

RPM, temperature, oil pressure and more parameters directly from the computer.

Real Odometer

Real vehicle kilometers, not GPS calculated. Higher precision.

Fault Codes

DTC reading for preventive diagnostics and maintenance alerts.

Fuel Control

Measurement methods

Choose the method that best suits your operation. CAN Bus offers the highest precision without additional sensors.

MethodPrecisionDescription

Direct CAN Bus±0.5%Vehicle ECU reading

Flow sensor±1%In-line fuel flowmeter

Tank level±5%Ultrasonic or dipstick sensor

OBD2 level±5%Level reported by ECU

CAN Bus = Maximum Precision

Direct reading from vehicle ECU eliminates the need to install additional sensors and provides factory-precision data.

No additional hardware
Simple installation
Real-time data
Compatible with +5000 vehicles

Compatibility

Devices with CAN Bus

Spider IoT

Native integrated CAN Bus

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Smart IoT

Native CAN Bus + OBD2

View product

Zero IoT

No CAN Bus interface

Note: Zero IoT does not include CAN Bus interface. For features requiring ECU reading, we recommend Spider IoT or Smart IoT.

Related Modules

Power up your CAN Bus

29 Parameters

ECU Module

Complete computer data reading: RPM, speed, temperature, consumption and more.

View module

Drive Score

Trip Analysis (TRIP)

Driving scoring, speed/RPM histograms and consumption per trip.

View module

±0.5% Precision

Fuel Control

Multiple measurement methods: CAN Bus, flowmeters and level sensors.

View feature

Video

Explainer Video

Discover how CAN Bus and ECU reading works on our IoT devices.

Want direct ECU data?

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