WrongOutside Temperture on LED readout
Thread Starter
Supporting Vendor
Joined: Sep 2007
Posts: 11,216
Likes: 178
From: Pensacola Florida GO GATORS!!! www.rlsebring.com www.c6c7vette.com
St. Jude Donor '17
WrongOutside Temperture on LED readout
I have started getting a -32F degree readout. Heat wants to come on badly. Not good in Florida when it's already hot outside. The temp will rise after about 5 mins and get to 40F something which will let the A/C come onif neded. Is this my outside temp probe or something in the climate control unit? Any help would be appeciated.
Le Mans Master
Joined: May 2005
Posts: 6,366
Likes: 249
From: Fort Lauderdale, Florida
It's definetely the outside temp sensor. It's located down in front of the radiator on the right side, you can see it with the hood open. It just plugs in and is easy to change. Also, it's fairly inexpensive, around the $10 range. I've had it happen to me. When it does you can't properly control the HVAC system.
Safety Car
Joined: Aug 2000
Posts: 4,933
Likes: 30
From: San Rafael CA
99 percent chance it is the outside air temperature (OAT) sensor. New one is GM part number 10248414 ... GM list price is $10.17 ... so not exactly a budget breaker.
If this helps ... from another post .....
Disconnect the sensor. You should get DTC B0333 Outside Air Temp Sensor Open, and the temp display should default to 65*F. This would tell you that there are no shorts in the wiring harness/connector.
Short the sensor connector - this won't blow anything. You should get DTC B0332 Outside Air Temp Sensor Short to Ground, and the temp display should default to 65*F. This will confirm that there are no random impedances in the circuit.
Measure the impedance of the sensor itself. At 68*F, it should measure 12,493 ohms. At 86*F/8,056 ohms, 104*F/5327 ohms. That should be enough to verify it's within its expected range
Also ... IMPORTANT .... You need to drive the car after you replace the sensor for AT LEAST 2 minutes for the system to read the new sensor. Otherwise, after you replace the sensor the temperature displayed, until you drive for a few minutes, is what was "in memory" when the engine last shut off.
If this helps ... from another post .....
Disconnect the sensor. You should get DTC B0333 Outside Air Temp Sensor Open, and the temp display should default to 65*F. This would tell you that there are no shorts in the wiring harness/connector.
Short the sensor connector - this won't blow anything. You should get DTC B0332 Outside Air Temp Sensor Short to Ground, and the temp display should default to 65*F. This will confirm that there are no random impedances in the circuit.
Measure the impedance of the sensor itself. At 68*F, it should measure 12,493 ohms. At 86*F/8,056 ohms, 104*F/5327 ohms. That should be enough to verify it's within its expected range
Also ... IMPORTANT .... You need to drive the car after you replace the sensor for AT LEAST 2 minutes for the system to read the new sensor. Otherwise, after you replace the sensor the temperature displayed, until you drive for a few minutes, is what was "in memory" when the engine last shut off.
Le Mans Master
Joined: Mar 2002
Posts: 8,466
Likes: 51
St. Jude Donor '17
Tip: remove the old sensor before you leave the gm part store.
I had to turn around and go back for a 50 dollar harness for the plug that rusted out the connections.
Yeah i got bent over on that one
I had to turn around and go back for a 50 dollar harness for the plug that rusted out the connections.
Yeah i got bent over on that one
Thread Starter
Supporting Vendor
Joined: Sep 2007
Posts: 11,216
Likes: 178
From: Pensacola Florida GO GATORS!!! www.rlsebring.com www.c6c7vette.com
St. Jude Donor '17
Thanks for the help. wanted to make fairly sure before just changing parts till I figured it out. This one time though I wished it was in the climate control since I am changing it out anyway because of burnt out lights. Ahhh the story of the Vette... Thanks again!
Thread Starter
Supporting Vendor
Joined: Sep 2007
Posts: 11,216
Likes: 178
From: Pensacola Florida GO GATORS!!! www.rlsebring.com www.c6c7vette.com
St. Jude Donor '17
99 percent chance it is the outside air temperature (OAT) sensor. New one is GM part number 10248414 ... GM list price is $10.17 ... so not exactly a budget breaker.
If this helps ... from another post .....
Disconnect the sensor. You should get DTC B0333 Outside Air Temp Sensor Open, and the temp display should default to 65*F. This would tell you that there are no shorts in the wiring harness/connector.
Short the sensor connector - this won't blow anything. You should get DTC B0332 Outside Air Temp Sensor Short to Ground, and the temp display should default to 65*F. This will confirm that there are no random impedances in the circuit.
Measure the impedance of the sensor itself. At 68*F, it should measure 12,493 ohms. At 86*F/8,056 ohms, 104*F/5327 ohms. That should be enough to verify it's within its expected range
Also ... IMPORTANT .... You need to drive the car after you replace the sensor for AT LEAST 2 minutes for the system to read the new sensor. Otherwise, after you replace the sensor the temperature displayed, until you drive for a few minutes, is what was "in memory" when the engine last shut off.
If this helps ... from another post .....
Disconnect the sensor. You should get DTC B0333 Outside Air Temp Sensor Open, and the temp display should default to 65*F. This would tell you that there are no shorts in the wiring harness/connector.
Short the sensor connector - this won't blow anything. You should get DTC B0332 Outside Air Temp Sensor Short to Ground, and the temp display should default to 65*F. This will confirm that there are no random impedances in the circuit.
Measure the impedance of the sensor itself. At 68*F, it should measure 12,493 ohms. At 86*F/8,056 ohms, 104*F/5327 ohms. That should be enough to verify it's within its expected range
Also ... IMPORTANT .... You need to drive the car after you replace the sensor for AT LEAST 2 minutes for the system to read the new sensor. Otherwise, after you replace the sensor the temperature displayed, until you drive for a few minutes, is what was "in memory" when the engine last shut off.
I like this! Not too many people understand that a good part and a bad part has readings. This info is so hard to find most of the time. I generally like to know why something is bad or not quite right. I have had parts read right until power is put to it. Gives a ghost in the machine appearance. Fuses come to mind...
Thanks for the input.
Thread Starter
Supporting Vendor
Joined: Sep 2007
Posts: 11,216
Likes: 178
From: Pensacola Florida GO GATORS!!! www.rlsebring.com www.c6c7vette.com
St. Jude Donor '17
Good advice... I get bent too easy as it is. I try to avoid any additional stress by trying to plan the best I can. Doesn't work most of the time especially dealing with the dealership.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
