Check engine light shut off

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Apr 10, 2018 | 04:55 PM

Sir Vivor

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Joined: Nov 2012

Posts: 61

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From: North Daho, Rocky Mtns

Check engine light shut off

Check engine light came on, so made an appt at a mechanic shop to get a diagnosis.

Thought it was low power steering fluid, replaced it. Thought it was old, dark motor oil, changed that. Nope.

The manual specifies changing oil every 5k, and Volvo experts say 3k. I let this go for 11k! (But maintained a good level.) My previous longest was 8k.

My own diagnostic box is worthless, thinks the car is fine.

I have to wonder if anyone, anywhere gets useful data out of those worthless things.

Two days before shop appt the check engine light went out. Cancelled the appt, reasoning that without fault codes, the shop would not be able to determine what the problem was.

Was I right, or do fault codes get saved?

Apr 10, 2018 | 10:39 PM

ES6T

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Joined: Oct 2010

Posts: 5,517

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Fault codes are stored.

Change your oil on time.

Apr 13, 2018 | 05:52 PM

JohnLewis45

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Joined: Sep 2017

Posts: 6

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They should be able to bring up the fault codes. If you don't want to spend the cash on bringing it in, and everything seems to have fixed itself, don't worry about it unless they come on again.