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Author Topic: Safe to drive with ECU light on?  (Read 750 times)

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MrDJ

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Safe to drive with ECU light on?
« on: 25 August 2010, 08:18:24 »

http://yfrog.com/03ecuaj

Is from the facelift manual and mine is pre-facelift but after unplugging ECU coolant temp sensor and finding I hadn't got a hope in hell of getting it out and plugging back in my light is on.

It doesn't say not safe to drive in facelift manual?
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PhilRich

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Re: Safe to drive with ECU light on?
« Reply #1 on: 25 August 2010, 08:31:15 »

This is the Emissions light, which comes on when a fault has been detected & a code stored. In this case, when you disconnected the Temp. sensor, it was detected as a broken/faulty signal & the problem code is now stored in the ECU. It is perfectly safe to drive with this particular 'fault'  :y
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MrDJ

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Re: Safe to drive with ECU light on?
« Reply #2 on: 25 August 2010, 09:04:22 »

As the sensor is now reconnected how come the light is still on then?

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Re: Safe to drive with ECU light on?
« Reply #3 on: 25 August 2010, 09:35:51 »

Quote
As the sensor is now reconnected how come the light is still on then?


It will stay on until you clear the fault codes.
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Re: Safe to drive with ECU light on?
« Reply #4 on: 25 August 2010, 09:36:42 »

Update your profile with your location, someone may live near you that can clear the codes.
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MrDJ

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Re: Safe to drive with ECU light on?
« Reply #5 on: 25 August 2010, 09:53:33 »

So fixing the problem wont clear the fault codes?

Also thought I read somewhere 20-30 good starts did that?
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Andy B

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Re: Safe to drive with ECU light on?
« Reply #6 on: 25 August 2010, 11:06:38 »

Quote
So fixing the problem wont clear the fault codes?

 ..... quote]

Yes it will. The only time a warning light has to be reset after it's fixed is the ABS light.  ;)
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Andy B

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Re: Safe to drive with ECU light on?
« Reply #7 on: 25 August 2010, 11:09:41 »

Quote
.....



It will stay on until you clear the fault codes.

No it won't, the light will go out when the fault is corrected. The code will be logged though till cleared or 20/30 'clean starts' have been done.
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Brikhead

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Re: Safe to drive with ECU light on?
« Reply #8 on: 25 August 2010, 11:51:11 »

Quote
The only time a warning light has to be reset after it's fixed is the ABS light.  ;)

As said, fault code lights should go out when the particular fault has been rectified, this doesn't apply to 'saftey critical' systems such as the A.B.S. and S.R.S.
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