Thermostat sensor leak?
#1
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I've heard of the coolant temp sensor leaking, but has anyone ever had a leak in the thermostat? I'm attaching a picture. I'm about to purchase a new thermostat and I'm wondering if this is a known issue. The check engine light came on and the error code pointed to this sensor.
Last edited by 540i; 04-08-2013 at 09:56 AM.
#2
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I'd be careful of allowing OBD readers to interpret codes. Most codes are proprietary and therefore come out just a little incorrect. I highly doubt that your reader is accurate on this one because a leak is a physical issue not a logical one. No way a computer is going to know that there is a problem with an o-ring and which one. Just does not work that way.
I personally have never heard of the above but anything with an o-ring can be susceptible to leaking. Have you physically inspected the car? If there is a leak there should be something visible. There is a coolant temp sensor that is prone to leaking. It's a cheap part $25 or so. I changed mine out a few months back after I noticed it leaking.
I personally have never heard of the above but anything with an o-ring can be susceptible to leaking. Have you physically inspected the car? If there is a leak there should be something visible. There is a coolant temp sensor that is prone to leaking. It's a cheap part $25 or so. I changed mine out a few months back after I noticed it leaking.
#3
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Yes, I physically inspected the car.
The OBD2 reader did not say that there was a leak, but that there is an issue with that specific sensor/connector. After unplugging the connector going into the thermostat I noticed the leak.
The OBD2 reader did not say that there was a leak, but that there is an issue with that specific sensor/connector. After unplugging the connector going into the thermostat I noticed the leak.
#4
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Okay, just updating the thread for anyone who gets the same error code (P0598.) After replacing the thermostat and re-setting the ECU, the error disappeared. Usually it would come right back on, but this time it stayed off.
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