At a bit of a loss with coolant light and code

[RP808]

My coolant light came on the other day. No leaks, no fluid loss, no overheating, nothing to make me believe that anything is wrong with the system. Just to be sure I replaced my coolant res cap. The light is still on. I've driven the car all over the place and no coolant/overheating occurred. Hooked up the code reader, the only code that came up was : 1, DME self test. Don't really know what to do next or if I should be looking at replacing sending units. Any and all advice appreciated. Thank you for your time in advance.

[Tom.]

if you're talking about the over head check panel light.. that indicates that your coolant level is low (or that the sensor isn't working).

[mr.vang]

Your coolant level sensor is bad, replace it and you should be good.

[AndrewBird]

Either that or it is gunked up with stuff. It's a float, so if something is holding it down, it will turn the light on. Or the connector came loose or there is a broken wire.

[uturn]

If you are going to change the sensor, go with bmw. The Febi one didn't work out the box.

[RP808]

Good to know! I'll get a new sensor asap. Thanks again

[dnguyen1963]

I just got one from Blunt. It is an inexpensive repair.

[HennaE30]

I've been trying to figure out with no luck, is it possible to bypass this sensor? like with the brake pad sensor?


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[uturn]

Yes, it's the same way you test to confirm the sensor is bad. Install a jumper wire at the connector in place of the sensor.

[HennaE30]

Yes, it's the same way you test to confirm the sensor is bad. Install a jumper wire at the connector in place of the sensor.

That's what I thought. Also what is the engine oil light for? I changed mine and it's still on?


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[uturn]

Engine oil level.

[HennaE30]

Engine oil level.

Do they often go bad? My oil level is fine.


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[uturn]

The connector is brittle and usually falls apart.