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Check Engine Light comes on for 1-2 days, then goes..comes back…

Check Engine Light comes on...
Check Engine Light comes on for 1-2 days, then goes out for several days, then comes back
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Answered in 1 minute by:
6/25/2010
Ron Z.
Ron Z., - Subaru Tech -
Category: Subaru
Satisfied Customers: 20,060
Experience: 18+yrs experience. State Inspector and Subaru Diagnostics
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Did you have any codes read? Are you experiencing any drivability issues? Skipping, surging, etc...?

 

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Customer reply replied 8 years ago
No codes read yet. Got a tranny with a shift into first gear issue, but driveability other than initial start off and a little roughness at stop lights is fine. This has been going on for about 3 years now, but the engine light is new, about 6 months of this off and on behavior.

 

Ok. Sounds like you may have a couple different issues going on here. Your best bet at this point, is going to be to get the "p-codes" read and see which parts/sensors in which systems have the fault. Once you have these p-codes you can accurately and efficiently diagnose the problem, and make the repair. To avoid diagnostic fees, you can go to any local AutoZone location and they will read the codes for you for Free.

 

Ron Z.
Ron Z., - Subaru Tech -
Category: Subaru
Satisfied Customers: 20,060
Experience: 18+yrs experience. State Inspector and Subaru Diagnostics
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Customer reply replied 8 years ago
Thanks for the advice. Will drive for a few days and see if the light goes off permanently. If not, will check with AZ for the codes.

 

More than likely, the light isn't going to go away. The shift issues are monitored by the PCM, and will set a light. Also, if it's intermittantly on/off, most likely an EVAP (emissions) problem as well. Once the Engine Light comes on, very rarely will it "fix itself" and go off for good.

 

Glad I could help. Have a great day. If you need help after you get the codes, look me up!

 

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