Skip the auto shop - Our mechanics make house calls

Q: Will a home code reader/scanner let me fix my car?

asked by on

Can I fix my car with a home code reader/scanner?

A: Aftermarket code readers and scanners canno...

Aftermarket code readers and scanners cannot, by themselves, be used to fix your car. The scanner is used to retrieve diagnostic trouble codes (DTCs) from the various control modules on the vehicle. After using your scanner to retrieve DTCs, you must compare these codes to a DTC index to find the appropriate series of tests that are used to diagnose the system. These readers only helps allow you to pinpoint faulty components. The repairs themselves are done separately.

To fix your car, will you need access to the diagnostic tests as well as the necessary testing equipment. Having a home reader, however, may allow you to clear a malfunction indicator lamp (MIL).

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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: Replaced oxygen sensors, but code P0135 still visible - 1996 Lexus LX450

P0135 is a "heater circuit" malfunction in the O2 sensor. This is usually a fused circuit. Check your Owners Manual to verify that it is fused, then check that fuse to make sure it isn't blown ("something" caused the old...

Q: Coolant leak codes

The code P2187 indicates a lean running situation at idle. More parameters will need to be checked to get to the bottom of this issue. Sometimes false reading from a malfunctioning mass air flow sensor may mess with the vehicle's...

Q: Codes P0420 and P0171 appearing

When it relates to the air conditioning system, the dealership does not have an advantage when it comes to hybrid air conditioning systems. These air conditioning systems require special evacuation machines that are different from that of a normal air...

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...
How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...