Skip the auto shop - Our mechanics make house calls

Q: Issue with the scanner connection to the EC

asked by on

2000 Blazer. I tried to use my scanner and it was connected with no problems but it wouldn't communicate with the EC. What could be the problem?

A: If you’ve got a scanner and it’s not commun...

If you’ve got a scanner and it’s not communicating with the computer system, there are really only three possible issues if your scanner has actually worked.

The first possible issue is with wiring pins, specifically in the connector where you plug it in. If the data link connectors are bent they will be unable to operate. Check to make sure that none of them are bent.

Another probably issue is that you’ve got a wiring problem in the car somewhere and it’s shorting the system out. It could be a bad MAF sensor or the itself wiring that is connected to the MAF sensor.

Lastly, the third possibility is a bad EC. If the main computer goes bad, you can’t communicate with it. If this is the case, you’ll want to hope that you can find the wiring short so that it will be able to communicate.

If you need assistance with these checks, contact a certified mechanic who can find the root of your electrical problems and fix it accordingly.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Electrical issues with the gauges, interior lights, and rear wiper blade.

Hi there. When it comes to multiple systems and the electrical circuits malfunction, there is a power and ground issue. Check the battery cables and clean them with a tooth brush and baking soda with water. This will clean off...

Q: Misfire - 2003 Ford Expedition

Hello and thanks for your question. When diagnosing a misfire, you would need to determine all of the factors for what could be the problem. When you mentioned that you had switched a coil out from another cylinder to number...

Q: Car shudders and hesitates when accelerating from a stop

This may be related to a few different things, such as low fuel pressure or a bad mass air flow sensor. Low fuel pressure may cause the car to shudder if it is starving for fuel when trying to accelerate....

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...