What is EngineCheck
EngineCheck Pro is an engine diagnostics package that will
help you read fault information and live sensor values from
car engines. It can be run on a laptop on the road or on
a PC in the workshop.
The package is designed for use with EOBD and OBDII compliant
- EOBD cars are cars sold in the UK/Europe
from 2001 (petrol) or 2004 (diesel)
- OBDII cars are cars sold in the US from
What can I do with EngineCheck
EngineCheck Pro will read and display the fault codes from
the on-board computer (ECU) that controls the car engine.
It will also allow you to view live data with the engine
running, e.g. RPM, speed, sensor readings (including mass
air flow sensors and oxygen sensor voltages, for example).
If the car's Check Engine light is on, you can use EngineCheck
Pro, to read the fault code that has caused the light.
You can also clear the codes (reset the ECU). This will
switch the Check Engine light off.
Why should I buy EngineCheck
Pro over other diagnostic systems out there?
As you know, you can spend thousands of pounds buying and
updating diagnostic tools for the workshop. There is such
a wide range of tools available - all claiming to cover
certain cars and certain systems.
EngineCheck Pro is a quick, low-cost and straightforward
system to help get a good footing in the world of diagnostics.
Given its cost, we hope that it will pay for itself many
In addition, we write and support the software here in
the UK - no outsourcing or third-party developers. We can
therefore respond to queries quickly.
Why would I need EngineCheck
To tell you what is wrong with a car when the Check Engine
light is on.
If there is a fault within an engine or exhaust/emissions
system, e.g. misfires, poor idling, stalling, the engine
control unit (ECU) will normally record the problem in the
form of a fault code.
Depending on the severity of the code, and the number of
times the engine has seen the fault, it will often then
switch the Check Engine light on on the dashboard.
This light is designed to alert the driver to a whole range
of faults, e.g. an engine sensor reading out of range, high
exhaust emissions, wiring fault etc., that may be affecting
engine running, and hence affecting emissions.
If the light is flashing, this indicates a more-serious
fault that might be damaging the catalytic converter. In
this instance, the car should not be driven until the fault
has been investigated and repaired.
If the light is on, you'll need a tool such as EngineCheck
Pro to read the fault code from the car. This will point
you in the direction of the fault.
What do I need to
use EngineCheck Pro?
You'll need a PC or laptop (running Windows 98SE or newer)
and an ELM327 car diagnostics interface (included in the
Pro package). The interface provides the connection from
the PC to the car.
Can I remap my ECU,
adjust mileage, or reset other lights (ABS, service, airbag
No. The package is designed purely for engine diagnostics.
Can using the software
harm a car?
No. The software uses queries defined in European Directives
(or Federal Law) for engine diagnostics. The package is
primarily only asking the on-board computer for information,
so it cannot affect running of the car.
What if it doesn't
work on a particular car?
We try to be realistic on this - clearly, there are so
many interpretations of the various languages/protocols
by the car manufacturers that there will always be a small
number of cars it won't connect to straight away. We hope
you appreciate our honesty on this and will work with us.
If you have a car that falls into the categories shown
above (OBDII/EOBD), we can gather 'logging' information
from the software. Using this, we can work out where the
problem is and fix it.
What about updates?
This is a developing package - we're hoping to add many
more features. Updates will be free for one year - thereafter
a small charge is likely to apply for the latest version.
I bought a lead from
[ebay], will EngineCheck Pro work with it?
Good question. Provided the lead is a correct implementation
of an ELM chipset (ELM320, 322, 323 or 327), then it should
be fine. Please email
us before ordering the software to confirm compatibility.