When a warning light appears on the dashboard, many car owners immediately think about visiting a repair shop. However, a simple diagnostic scan can often tell you what is happening before you spend money on unnecessary repairs.

The OBDMATE OM701 is a 3.5-inch handheld OBD2 scanner designed for DIY users, vehicle owners, and professional workshops. Unlike basic code readers that focus primarily on engine diagnostics, the OM901 provides access to four major vehicle systems: Engine, ABS, SRS Airbag, and Transmission.

It also provides standard OBD2 functions such as reading and clearing trouble codes, viewing live data, checking I/M readiness, accessing freeze-frame information, and performing advanced Mode 6 and Mode 8 tests.

For Jaguar and Land Rover owners, the OBDMATE OM701 offers a more specialized solution, providing all-system diagnostics for supported JLR vehicles from 1996 to 2023.

What Is the OBDMATE OM701 OBD2 Scanner?

The OBDMATE OM701 is a handheld automotive diagnostic scanner that combines standard OBD2 functions with four-system vehicle diagnostics.

A Step Up From a Basic OBD2 Code Reader

Many entry-level OBD2 scanners are designed mainly to read engine fault codes related to emissions. They can be useful for checking a Check Engine Light, but they may not communicate with other important vehicle modules.

The OM701 expands diagnostic coverage by supporting:

• Engine diagnostics
• ABS diagnostics
• SRS Airbag diagnostics
• Transmission diagnostics
• OBD2 full-function testing
• Live data
• Freeze-frame data
• I/M readiness
• EVAP-related testing
• O2 sensor testing
• On-board monitor testing

This makes the scanner useful for both everyday vehicle owners and workshops that need a quick diagnostic solution.

3.5-Inch Display for Easier Diagnosis

The OM701 features a 3.5-inch display, providing more room to view fault codes and live data compared with many compact code readers.

The larger screen is particularly useful when you are working with multiple data values or checking diagnostic information outside the workshop.

OBDMATE OM701 4-System Diagnostics

One of the key advantages of the OM701 is its ability to diagnose four major vehicle systems.

1. Engine System Diagnosis

Engine diagnostics are essential when the Check Engine Light comes on or the vehicle develops drivability problems.

The OM701 can help identify fault codes associated with areas such as:

• Fuel systems
• Ignition systems
• Emissions
• Engine sensors
• Misfire-related problems
• Other supported engine faults

Why Engine Diagnostics Matter

Instead of replacing parts based only on symptoms, you can scan the vehicle first and use the stored diagnostic information as a starting point.

For example, if the Check Engine Light appears after the car begins running roughly, scanning the engine module can help identify whether the vehicle has a stored fault code related to ignition, fuel delivery, or emissions.

2. ABS System Diagnosis

The Anti-lock Braking System is another important system that basic engine-only scanners often cannot access.

With supported vehicles, the OM701 can read and clear ABS fault codes.

Common ABS Warning Situations

An ABS warning light may be caused by problems involving:

• Wheel-speed sensors
• ABS circuits
• Brake-related electronic components
• Communication faults
• Other supported ABS module issues

Having access to the ABS system can help determine whether a warning light is related to an electronic fault rather than a simple mechanical issue.

3. SRS Airbag System Diagnosis

The OM701 also supports SRS diagnosis on compatible vehicles.

The SRS system controls important safety components such as airbags and related sensors.

Check SRS Fault Codes Before Replacing Parts

If an airbag warning light appears, scanning the SRS module can provide useful diagnostic information.

Instead of immediately replacing components, technicians can first identify the stored fault and investigate the related circuit or component.

4. Transmission System Diagnosis

Transmission problems can be expensive to diagnose and repair.

The OM701 can access the transmission system on supported vehicles and read related diagnostic trouble codes.

Useful for Transmission-Related Symptoms

Examples include:

• Shifting problems
• Gearbox warning lights
• Abnormal shifting
• Transmission-related fault codes
• Other supported electronic transmission issues

The scan results do not replace professional mechanical inspection, but they can provide a useful starting point for troubleshooting.

Full OBD2 Functions of the OM701

Beyond four-system diagnostics, the OM701 provides a range of standard OBD2 functions.

Read and Clear Diagnostic Trouble Codes

The scanner can read stored fault codes and clear codes after the underlying problem has been addressed.

Why Clearing Codes Is Not a Repair

It is important to understand that clearing a code does not necessarily fix the problem.

For example, if an EVAP leak is repaired but the warning light remains on, clearing the code may allow the system to begin a new monitoring cycle. If the fault remains, the code can return.

Live Data Stream

Live data allows users to observe vehicle operating parameters while the engine is running.

This can be useful when troubleshooting problems that are difficult to identify from stored codes alone.

Live Data Can Help With:

• Sensor performance
• Engine operating conditions
• Fuel-related information
• Emissions-related parameters
• Other supported PID data

The ability to see real-time information makes the OM901 more useful than a simple code reader.

One-Click I/M Readiness Test

One particularly useful feature of the OM701 is its dedicated I/M Readiness function.

I/M readiness indicates whether the vehicle's emissions monitors have completed their required self-tests.

Why I/M Readiness Matters

Before an emissions or smog inspection, a vehicle may have no active Check Engine Light but still fail because certain monitors have not completed their drive cycles.

The OM701 scanner can help you check the readiness status before going to an inspection station.

Check Emissions Readiness Before a Smog Test

For example, after disconnecting a battery or clearing diagnostic codes, some emissions monitors may return to an incomplete status.

Using the OM701 before an inspection can help identify incomplete monitors in advance.

This can save a trip to the inspection station and reduce unnecessary guesswork.

Advanced Mode 6 and Mode 8 Diagnostic Tests

The OM701 also includes enhanced diagnostic capabilities involving Mode 6 and Mode 8 functions on supported vehicles.

O2 Sensor Test

The O2 sensor plays an important role in monitoring the air-fuel mixture and emissions system.

What the O2 Sensor Test Can Help You Check

On supported vehicles, the scanner can provide information related to:

• Oxygen sensor response
• Sensor voltage
• Sensor performance
• Possible sensor deterioration
• Emissions-related abnormalities

If a vehicle has poor fuel economy, unstable idle, emissions problems, or an engine warning light, O2 sensor data can provide useful diagnostic clues.

EVAP Leak Test

The EVAP system controls fuel vapors and is an important part of the vehicle's emissions system.

A small leak can trigger diagnostic trouble codes and eventually illuminate the Check Engine Light.

Common EVAP-Related Codes

The OM701 scan tool can help with troubleshooting situations involving codes such as:

• P0442
• P0455
• P0456

These codes can be associated with EVAP system leakage.

What Should You Check?

Depending on the vehicle, technicians may investigate:

• Fuel cap
• EVAP hoses
• Vapor lines
• Charcoal canister
• Purge or vent valves
• Other EVAP components

The scanner helps identify diagnostic information, while physical inspection may still be required to locate the actual leak.

On-Board Monitor Testing

Another useful function is the ability to check supported on-board monitoring systems.

What Does the On-Board Monitor Test Do?

Modern vehicles continuously monitor different emissions-related components and systems.

Depending on the vehicle, these can include:

• Catalytic converter monitoring
• EGR monitoring
• Secondary air system
• Misfire monitoring
• Oxygen sensor monitoring
• Other emissions-related monitors

Useful Before Vehicle Inspection

If you are preparing a vehicle for an emissions inspection, checking monitor status beforehand can help identify potential problems before arriving at the inspection station.

OBDMATE OM701 Code Reader Vehicle Compatibility

The OM701 is designed as a multi-brand OBD2 diagnostic scanner.

Multi-Brand OBD2 Coverage

Its standard OBD2 functions are intended for compatible OBD2 vehicles, while advanced four-system functions depend on the vehicle's manufacturer, model, year, and installed modules.

Compatibility Can Vary

Not every vehicle will provide exactly the same diagnostic functions.

Factors can include:

• Vehicle model
• Model year
• ECU configuration
• Installed control modules
• Communication protocol
• Manufacturer-specific functions

Therefore, users should always confirm compatibility before purchasing if they need a specific manufacturer-specific function.

OBDMATE OM701: JLR Diagnostic Tool for Jaguar and Land Rover

For owners and technicians working specifically with Jaguar and Land Rover vehicles, the OBDMATE OM701 takes a more specialized approach.

Unlike the multi-brand OM901, the OM501 is designed with Jaguar and Land Rover diagnostics as its main focus.

Jaguar and Land Rover Full-System Diagnostics

The OM701 is designed to access available electronic control modules on supported Jaguar and Land Rover vehicles.

This can include systems such as:

• Engine
• Transmission
• ABS
• SRS/Airbag
• HVAC
• Body Control Module
• Other supported control modules

Supported Jaguar Models

The OM701 is designed for supported Jaguar models including:

• XE
• XF
• XJ
• F-PACE
• E-PACE
• I-PACE
• F-TYPE

Supported Land Rover Models

Supported Land Rover families include:

• Range Rover
• Range Rover Sport
• Discovery
• Discovery Sport
• Evoque
• Freelander
• Defender

The stated vehicle coverage is 1996–2023, although specific functions depend on the vehicle's model year and equipment.

Why JLR Owners May Need an All-System Scanner

A generic OBD2 reader may only communicate with the engine module.

That can be a problem when the warning light comes from another system.

More Than Just Check Engine Diagnostics

For example, a Jaguar or Land Rover owner may encounter:

• ABS warning
• Airbag warning
• TPMS-related warning
• Service reminder
• Transmission fault
• Body electronics problem

If the scanner can only access the engine ECU, it may not provide enough information to diagnose these issues.

An all-system diagnostic tool can provide access to more vehicle modules where supported.

JLR Reset and Service Functions

The OM701 is also designed to provide various reset and service functions for supported Jaguar and Land Rover vehicles.

Common Service Scenarios

For example, after performing maintenance yourself, the vehicle may still display a service reminder.

A compatible diagnostic scanner can potentially help reset supported service functions rather than requiring a trip to a dealership.

Other Potential Service Functions

Depending on the vehicle and module configuration, functions may include:

• Service reset
• Brake-related reset
• Battery-related functions
• TPMS-related functions
• Other supported calibrations and resets

The exact functions available should always be verified against the specific vehicle.

OM701 vs OM501: Which OBDMATE Scanner Should You Choose?

The two scanners target different users.

Choose OM701 If You Need Multi-Brand OBD2 Diagnostics

The OM701 scanner is a better fit if you:

• Work on multiple vehicle brands
• Want four-system diagnostics
• Need standard OBD2 functions
• Regularly check I/M readiness
• Diagnose emissions-related problems
• Want a handheld workshop scanner
• Prefer a larger 3.5-inch display

Choose OM501 If You Mainly Work With Jaguar and Land Rover

The OM501 makes more sense if your main vehicles are:

• Jaguar
• Land Rover
• Range Rover

Its advantage is the deeper focus on JLR vehicle modules and supported service functions.

Is the OBDMATE OM901 Worth Considering?

For DIY users and workshops, the OM701 occupies an interesting position between a basic OBD2 code reader and a more expensive professional diagnostic platform.

For DIY Car Owners

It can help you understand warning lights before paying for a diagnostic scan.

Instead of asking a repair shop to simply read a code, you can perform an initial scan yourself and decide whether professional repair is necessary.

For Independent Repair Shops

For workshops handling a variety of vehicles, the four-system diagnostic coverage can make the OM701 useful for quick inspections.

The 3.5-inch display and dedicated diagnostic functions also make it convenient for daily use.

A Practical Diagnostic Workflow

A simple workflow could be:

1. Connect the OM701 to the vehicle.
2. Identify the vehicle and available systems.
3. Scan for diagnostic trouble codes.
4. Review live data when necessary.
5. Check I/M readiness for emissions-related concerns.
6. Investigate Mode 6/8 information when supported.
7. Repair the underlying problem.
8. Clear the relevant fault code.
9. Perform a follow-up scan.

This approach is much more useful than simply clearing warning lights without investigating the cause.

Final Verdict

The OBDMATE OM701 is designed for users who want more than a basic engine-code reader. Its combination of 4-system diagnostics, full OBD2 functions, 3.5-inch display, I/M readiness testing, live data, and advanced Mode 6/8 capabilities makes it a practical option for DIY users and independent workshops.

For general multi-brand diagnostics, the OM901 is the more versatile choice. For Jaguar and Land Rover specialists, the OM501 offers a more targeted solution with supported all-system JLR diagnostics and service functions.

The most important point is to match the scanner with your actual vehicle and diagnostic needs. Advanced functions can vary by model year, ECU configuration, and factory equipment, so compatibility should always be confirmed before purchase.