Q: Will battery disconnect erase/delete obd2 data

asked by on

I want to change my spark plugs (and save myself about $50 in labor), but don't want to lose any obd2 error codes my mechanic may need. I am planning on having my mechanic do a full inspection on the vehicle later this week. Will removing the negative terminal from the battery erase or delete the codes, and make it more difficult and costly for the diagnosis of any additional repairs currently needed on my vehicle? Thank you.

Disconnecting the battery will not clear any codes in memory of the computer for stored OBD2 codes. The only way to clear the codes is to use a scanner and use the code clear function.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Will battery disconnect erase/delete obd2 data

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: My car will not stay started after installing a new alternator

Hello. You will want to check that the alternator installed has the right amperage output for your vehicle. Some vehicles take two or maybe three different types of alternators and the one that was installed may not have sufficient power...

Q: How do I fix my hydro-locked car?

An engine is a large air pump. It is best to remove the spark plugs and crank the engine over with the ignition and fuel system disabled. This will blow out all of the water from the engine. This will...

Q: vanos solenoid bmw

The nature of the repair will have to do with the faults stored in the DME (engine computer). Spark plugs, though rated at 100K miles, have a service life of about 60K miles and should be replaced at tht mileage....

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...
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...
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...